fix(anthropic): capture structured output metadata#238

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Merged
Abhijeet Prasad (AbhiPrasad) merged 1 commit into from
Apr 9, 2026
Merged

fix(anthropic): capture structured output metadata #238

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110 changes: 110 additions & 0 deletions ...nthropic/cassettes/test_anthropic_messages_create_tracks_structured_outputs_metadata.yaml
View file
Open in desktop
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,110 @@
interactions:
- request:
body: '{"max_tokens":128,"messages":[{"role":"user","content":"Return a JSON object
with answer=2 and label=\"ok\"."}],"model":"claude-haiku-4-5","output_config":{"format":{"type":"json_schema","schema":{"type":"object","properties":{"answer":{"type":"integer"},"label":{"type":"string"}},"required":["answer","label"],"additionalProperties":false}}}}'
headers:
Accept:
- application/json
Accept-Encoding:
- gzip, deflate, zstd
Connection:
- keep-alive
Content-Length:
- '344'
Content-Type:
- application/json
Host:
- api.anthropic.com
User-Agent:
- Anthropic/Python 0.84.0
X-Stainless-Arch:
- arm64
X-Stainless-Async:
- 'false'
X-Stainless-Lang:
- python
X-Stainless-OS:
- MacOS
X-Stainless-Package-Version:
- 0.84.0
X-Stainless-Runtime:
- CPython
X-Stainless-Runtime-Version:
- 3.13.3
anthropic-version:
- '2023-06-01'
x-stainless-read-timeout:
- '600'
x-stainless-retry-count:
- '0'
x-stainless-timeout:
- '600'
method: POST
uri: https://api.anthropic.com/v1/messages
response:
body:
string: '{"model":"claude-haiku-4-5-20251001","id":"msg_01NTFSpgrJwP5QJXAfN7unNz","type":"message","role":"assistant","content":[{"type":"text","text":"{\"answer\":2,\"label\":\"ok\"}"}],"stop_reason":"end_turn","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":183,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":0},"output_tokens":12,"service_tier":"standard","inference_geo":"not_available"}}'
headers:
CF-RAY:
- 9e9a4ef71fa0ac9f-YYZ
Connection:
- keep-alive
Content-Security-Policy:
- default-src 'none'; frame-ancestors 'none'
Content-Type:
- application/json
Date:
- Thu, 09 Apr 2026 14:47:44 GMT
Server:
- cloudflare
Transfer-Encoding:
- chunked
X-Robots-Tag:
- none
anthropic-organization-id:
- 27796668-7351-40ac-acc4-024aee8995a5
anthropic-ratelimit-input-tokens-limit:
- '4000000'
anthropic-ratelimit-input-tokens-remaining:
- '4000000'
anthropic-ratelimit-input-tokens-reset:
- '2026-04-09T14:47:44Z'
anthropic-ratelimit-output-tokens-limit:
- '800000'
anthropic-ratelimit-output-tokens-remaining:
- '800000'
anthropic-ratelimit-output-tokens-reset:
- '2026-04-09T14:47:44Z'
anthropic-ratelimit-requests-limit:
- '20000'
anthropic-ratelimit-requests-remaining:
- '19999'
anthropic-ratelimit-requests-reset:
- '2026-04-09T14:47:42Z'
anthropic-ratelimit-tokens-limit:
- '4800000'
anthropic-ratelimit-tokens-remaining:
- '4800000'
anthropic-ratelimit-tokens-reset:
- '2026-04-09T14:47:44Z'
cf-cache-status:
- DYNAMIC
content-length:
- '489'
request-id:
- req_011CZtP23rjNiGgHoNNfnj19
server-timing:
- x-originResponse;dur=3015
set-cookie:
- _cfuvid=Xtp25DVpHeIv9LXJ.bhbiwy2F5SYgJhWmQTVVFnyFQc-1775746061.9335136-1.0.1.1-mZBT5kq5Nw9Z32eTRtm5Pd7JQcZE432fC59pw5mr5cI;
HttpOnly; SameSite=None; Secure; Path=/; Domain=api.anthropic.com
strict-transport-security:
- max-age=31536000; includeSubDomains; preload
vary:
- Accept-Encoding
x-envoy-upstream-service-time:
- '3012'
status:
code: 200
message: OK
version: 1
101 changes: 100 additions & 1 deletion py/src/braintrust/integrations/anthropic/test_anthropic.py
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -2,6 +2,8 @@
Tests to ensure we reliably wrap the Anthropic API.
"""

import inspect
import json
import time
import unittest.mock
from pathlib import Path
Expand All@@ -12,13 +14,27 @@
from braintrust import Attachment, logger
from braintrust.integrations.anthropic import AnthropicIntegration, wrap_anthropic
from braintrust.integrations.anthropic._utils import extract_anthropic_usage
from braintrust.integrations.anthropic.tracing import _get_input_from_kwargs, _log_message_to_span
from braintrust.integrations.anthropic.tracing import (
_get_input_from_kwargs,
_get_metadata_from_kwargs,
_log_message_to_span,
)
from braintrust.test_helpers import init_test_logger


PROJECT_NAME = "test-anthropic-app"
MODEL = "claude-3-haiku-20240307" # use the cheapest model since answers dont matter
MULTIMODAL_MODEL = "claude-haiku-4-5-20251001"
STRUCTURED_OUTPUT_MODEL = "claude-haiku-4-5"
STRUCTURED_OUTPUT_SCHEMA = {
"type": "object",
"properties": {
"answer": {"type": "integer"},
"label": {"type": "string"},
},
"required": ["answer", "label"],
"additionalProperties": False,
}
PNG_BASE64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg=="
PDF_BASE64 = "JVBERi0xLjAKMSAwIG9iago8PC9UeXBlL0NhdGFsb2cvUGFnZXMgMiAwIFI+PmVuZG9iagoyIDAgb2JqCjw8L1R5cGUvUGFnZXMvS2lkc1szIDAgUl0vQ291bnQgMT4+ZW5kb2JqCjMgMCBvYmoKPDwvVHlwZS9QYWdlL01lZGlhQm94WzAgMCA2MTIgNzkyXT4+ZW5kb2JqCnhyZWYKMCA0CjAwMDAwMDAwMDAgNjU1MzUgZg0KMDAwMDAwMDAxMCAwMDAwMCBuDQowMDAwMDAwMDUzIDAwMDAwIG4NCjAwMDAwMDAxMDIgMDAwMDAgbg0KdHJhaWxlcgo8PC9TaXplIDQvUm9vdCAxIDAgUj4+CnN0YXJ0eHJlZgoxNDkKJUVPRg=="

Expand All@@ -36,6 +52,29 @@ def _get_async_client():
return anthropic.AsyncAnthropic()


def _get_supported_structured_output_param():
parameter_names = inspect.signature(_get_client().messages.create).parameters
if "output_config" in parameter_names:
return (
"output_config",
{
"format": {
"type": "json_schema",
"schema": STRUCTURED_OUTPUT_SCHEMA,
}
},
)
if "output_format" in parameter_names:
return (
"output_format",
{
"type": "json_schema",
"schema": STRUCTURED_OUTPUT_SCHEMA,
},
)
pytest.skip("Installed anthropic SDK does not support structured outputs parameters")


@pytest.fixture
def memory_logger():
init_test_logger(PROJECT_NAME)
Expand DownExpand Up@@ -94,6 +133,39 @@ def test_get_input_from_kwargs_converts_multimodal_base64_blocks_to_attachments(
assert PDF_BASE64 not in serialized


def test_get_metadata_from_kwargs_includes_structured_output_params():
metadata = _get_metadata_from_kwargs(
{
"model": MODEL,
"output_config": {
"format": {
"type": "json_schema",
"schema": STRUCTURED_OUTPUT_SCHEMA,
}
},
"output_format": {
"type": "json_schema",
"schema": STRUCTURED_OUTPUT_SCHEMA,
},
}
)

assert metadata == {
"provider": "anthropic",
"model": MODEL,
"output_config": {
"format": {
"type": "json_schema",
"schema": STRUCTURED_OUTPUT_SCHEMA,
}
},
"output_format": {
"type": "json_schema",
"schema": STRUCTURED_OUTPUT_SCHEMA,
},
}


def test_log_message_to_span_includes_stop_reason_and_stop_sequence():
span = unittest.mock.MagicMock()
message = SimpleNamespace(
Expand DownExpand Up@@ -333,6 +405,33 @@ def test_anthropic_messages_create_stream_true(memory_logger):
assert "12" in span["output"]["content"][0]["text"]


@pytest.mark.vcr
def test_anthropic_messages_create_tracks_structured_outputs_metadata(memory_logger):
assert not memory_logger.pop()

structured_output_param_name, structured_output_param_value = _get_supported_structured_output_param()
client = wrap_anthropic(_get_client())
response = client.messages.create(
model=STRUCTURED_OUTPUT_MODEL,
max_tokens=128,
messages=[
{
"role": "user",
"content": 'Return a JSON object with answer=2 and label="ok".',
}
],
**{structured_output_param_name: structured_output_param_value},
)

assert json.loads(response.content[0].text) == {"answer": 2, "label": "ok"}

spans = memory_logger.pop()
assert len(spans) == 1
span = spans[0]
assert span["metadata"]["model"] == STRUCTURED_OUTPUT_MODEL
assert span["metadata"][structured_output_param_name] == structured_output_param_value


@pytest.mark.vcr
def test_anthropic_messages_model_params_inputs(memory_logger):
assert not memory_logger.pop()
Expand Down
2 changes: 2 additions & 0 deletions py/src/braintrust/integrations/anthropic/tracing.py
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -38,6 +38,8 @@ def accumulate_event(event=None, current_snapshot=None, **kwargs):
"tools",
"stream",
"thinking",
"output_config",
"output_format",
)


Expand Down
Loading
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
fix(anthropic): capture structured output metadata#238

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Sign in
to your account

 Merged

Abhijeet Prasad (AbhiPrasad)
merged 1 commit into

from

Apr 9, 2026
 Merged


fix(anthropic): capture structured output metadata
#238
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110 changes: 110 additions & 0 deletions
...nthropic/cassettes/test_anthropic_messages_create_tracks_structured_outputs_metadata.yaml

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,110 @@
interactions:
- request:
 body: '{"max_tokens":128,"messages":[{"role":"user","content":"Return a JSON object
 with answer=2 and label=\"ok\"."}],"model":"claude-haiku-4-5","output_config":{"format":{"type":"json_schema","schema":{"type":"object","properties":{"answer":{"type":"integer"},"label":{"type":"string"}},"required":["answer","label"],"additionalProperties":false}}}}'
 headers:
 Accept:
 - application/json
 Accept-Encoding:
 - gzip, deflate, zstd
 Connection:
 - keep-alive
 Content-Length:
 - '344'
 Content-Type:
 - application/json
 Host:
 - api.anthropic.com
 User-Agent:
 - Anthropic/Python 0.84.0
 X-Stainless-Arch:
 - arm64
 X-Stainless-Async:
 - 'false'
 X-Stainless-Lang:
 - python
 X-Stainless-OS:
 - MacOS
 X-Stainless-Package-Version:
 - 0.84.0
 X-Stainless-Runtime:
 - CPython
 X-Stainless-Runtime-Version:
 - 3.13.3
 anthropic-version:
 - '2023-06-01'
 x-stainless-read-timeout:
 - '600'
 x-stainless-retry-count:
 - '0'
 x-stainless-timeout:
 - '600'
 method: POST
 uri: https://api.anthropic.com/v1/messages
 response:
 body:
 string: '{"model":"claude-haiku-4-5-20251001","id":"msg_01NTFSpgrJwP5QJXAfN7unNz","type":"message","role":"assistant","content":[{"type":"text","text":"{\"answer\":2,\"label\":\"ok\"}"}],"stop_reason":"end_turn","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":183,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":0},"output_tokens":12,"service_tier":"standard","inference_geo":"not_available"}}'
 headers:
 CF-RAY:
 - 9e9a4ef71fa0ac9f-YYZ
 Connection:
 - keep-alive
 Content-Security-Policy:
 - default-src 'none'; frame-ancestors 'none'
 Content-Type:
 - application/json
 Date:
 - Thu, 09 Apr 2026 14:47:44 GMT
 Server:
 - cloudflare
 Transfer-Encoding:
 - chunked
 X-Robots-Tag:
 - none
 anthropic-organization-id:
 - 27796668-7351-40ac-acc4-024aee8995a5
 anthropic-ratelimit-input-tokens-limit:
 - '4000000'
 anthropic-ratelimit-input-tokens-remaining:
 - '4000000'
 anthropic-ratelimit-input-tokens-reset:
 - '2026-04-09T14:47:44Z'
 anthropic-ratelimit-output-tokens-limit:
 - '800000'
 anthropic-ratelimit-output-tokens-remaining:
 - '800000'
 anthropic-ratelimit-output-tokens-reset:
 - '2026-04-09T14:47:44Z'
 anthropic-ratelimit-requests-limit:
 - '20000'
 anthropic-ratelimit-requests-remaining:
 - '19999'
 anthropic-ratelimit-requests-reset:
 - '2026-04-09T14:47:42Z'
 anthropic-ratelimit-tokens-limit:
 - '4800000'
 anthropic-ratelimit-tokens-remaining:
 - '4800000'
 anthropic-ratelimit-tokens-reset:
 - '2026-04-09T14:47:44Z'
 cf-cache-status:
 - DYNAMIC
 content-length:
 - '489'
 request-id:
 - req_011CZtP23rjNiGgHoNNfnj19
 server-timing:
 - x-originResponse;dur=3015
 set-cookie:
 - _cfuvid=Xtp25DVpHeIv9LXJ.bhbiwy2F5SYgJhWmQTVVFnyFQc-1775746061.9335136-1.0.1.1-mZBT5kq5Nw9Z32eTRtm5Pd7JQcZE432fC59pw5mr5cI;
 HttpOnly; SameSite=None; Secure; Path=/; Domain=api.anthropic.com
 strict-transport-security:
 - max-age=31536000; includeSubDomains; preload
 vary:
 - Accept-Encoding
 x-envoy-upstream-service-time:
 - '3012'
 status:
 code: 200
 message: OK
version: 1

101 changes: 100 additions & 1 deletion
py/src/braintrust/integrations/anthropic/test_anthropic.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -2,6 +2,8 @@
Tests to ensure we reliably wrap the Anthropic API.
"""

import inspect
import json
import time
import unittest.mock
from pathlib import Path
Expand All@@ -12,13 +14,27 @@
from braintrust import Attachment, logger
from braintrust.integrations.anthropic import AnthropicIntegration, wrap_anthropic
from braintrust.integrations.anthropic._utils import extract_anthropic_usage
from braintrust.integrations.anthropic.tracing import _get_input_from_kwargs, _log_message_to_span
from braintrust.integrations.anthropic.tracing import (
 _get_input_from_kwargs,
 _get_metadata_from_kwargs,
 _log_message_to_span,
)
from braintrust.test_helpers import init_test_logger


PROJECT_NAME = "test-anthropic-app"
MODEL = "claude-3-haiku-20240307" # use the cheapest model since answers dont matter
MULTIMODAL_MODEL = "claude-haiku-4-5-20251001"
STRUCTURED_OUTPUT_MODEL = "claude-haiku-4-5"
STRUCTURED_OUTPUT_SCHEMA = {
 "type": "object",
 "properties": {
 "answer": {"type": "integer"},
 "label": {"type": "string"},
 },
 "required": ["answer", "label"],
 "additionalProperties": False,
}
PNG_BASE64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg=="
PDF_BASE64 = "JVBERi0xLjAKMSAwIG9iago8PC9UeXBlL0NhdGFsb2cvUGFnZXMgMiAwIFI+PmVuZG9iagoyIDAgb2JqCjw8L1R5cGUvUGFnZXMvS2lkc1szIDAgUl0vQ291bnQgMT4+ZW5kb2JqCjMgMCBvYmoKPDwvVHlwZS9QYWdlL01lZGlhQm94WzAgMCA2MTIgNzkyXT4+ZW5kb2JqCnhyZWYKMCA0CjAwMDAwMDAwMDAgNjU1MzUgZg0KMDAwMDAwMDAxMCAwMDAwMCBuDQowMDAwMDAwMDUzIDAwMDAwIG4NCjAwMDAwMDAxMDIgMDAwMDAgbg0KdHJhaWxlcgo8PC9TaXplIDQvUm9vdCAxIDAgUj4+CnN0YXJ0eHJlZgoxNDkKJUVPRg=="

Expand All@@ -36,6 +52,29 @@ def _get_async_client():
 return anthropic.AsyncAnthropic()


def _get_supported_structured_output_param():
 parameter_names = inspect.signature(_get_client().messages.create).parameters
 if "output_config" in parameter_names:
 return (
 "output_config",
 {
 "format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 }
 },
 )
 if "output_format" in parameter_names:
 return (
 "output_format",
 {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 },
 )
 pytest.skip("Installed anthropic SDK does not support structured outputs parameters")


@pytest.fixture
def memory_logger():
 init_test_logger(PROJECT_NAME)
Expand DownExpand Up@@ -94,6 +133,39 @@ def test_get_input_from_kwargs_converts_multimodal_base64_blocks_to_attachments(
 assert PDF_BASE64 not in serialized


def test_get_metadata_from_kwargs_includes_structured_output_params():
 metadata = _get_metadata_from_kwargs(
 {
 "model": MODEL,
 "output_config": {
 "format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 }
 },
 "output_format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 },
 }
 )

 assert metadata == {
 "provider": "anthropic",
 "model": MODEL,
 "output_config": {
 "format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 }
 },
 "output_format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 },
 }


def test_log_message_to_span_includes_stop_reason_and_stop_sequence():
 span = unittest.mock.MagicMock()
 message = SimpleNamespace(
Expand DownExpand Up@@ -333,6 +405,33 @@ def test_anthropic_messages_create_stream_true(memory_logger):
 assert "12" in span["output"]["content"][0]["text"]


@pytest.mark.vcr
def test_anthropic_messages_create_tracks_structured_outputs_metadata(memory_logger):
 assert not memory_logger.pop()

 structured_output_param_name, structured_output_param_value = _get_supported_structured_output_param()
 client = wrap_anthropic(_get_client())
 response = client.messages.create(
 model=STRUCTURED_OUTPUT_MODEL,
 max_tokens=128,
 messages=[
 {
 "role": "user",
 "content": 'Return a JSON object with answer=2 and label="ok".',
 }
 ],
 **{structured_output_param_name: structured_output_param_value},
 )

 assert json.loads(response.content[0].text) == {"answer": 2, "label": "ok"}

 spans = memory_logger.pop()
 assert len(spans) == 1
 span = spans[0]
 assert span["metadata"]["model"] == STRUCTURED_OUTPUT_MODEL
 assert span["metadata"][structured_output_param_name] == structured_output_param_value


@pytest.mark.vcr
def test_anthropic_messages_model_params_inputs(memory_logger):
 assert not memory_logger.pop()
Expand Down

2 changes: 2 additions & 0 deletions
py/src/braintrust/integrations/anthropic/tracing.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -38,6 +38,8 @@ def accumulate_event(event=None, current_snapshot=None, **kwargs):
 "tools",
 "stream",
 "thinking",
 "output_config",
 "output_format",
)


Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
fix(anthropic): capture structured output metadata#238

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

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By clicking “Sign up for GitHub”, you agree to our terms of service and
privacy statement. We’ll occasionally send you account related emails.

Already on GitHub?
Sign in
to your account

 Merged

Abhijeet Prasad (AbhiPrasad)
merged 1 commit into

from

Apr 9, 2026
 Merged


fix(anthropic): capture structured output metadata
#238
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 Diff view

 Diff view


110 changes: 110 additions & 0 deletions
...nthropic/cassettes/test_anthropic_messages_create_tracks_structured_outputs_metadata.yaml

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,110 @@
interactions:
- request:
 body: '{"max_tokens":128,"messages":[{"role":"user","content":"Return a JSON object
 with answer=2 and label=\"ok\"."}],"model":"claude-haiku-4-5","output_config":{"format":{"type":"json_schema","schema":{"type":"object","properties":{"answer":{"type":"integer"},"label":{"type":"string"}},"required":["answer","label"],"additionalProperties":false}}}}'
 headers:
 Accept:
 - application/json
 Accept-Encoding:
 - gzip, deflate, zstd
 Connection:
 - keep-alive
 Content-Length:
 - '344'
 Content-Type:
 - application/json
 Host:
 - api.anthropic.com
 User-Agent:
 - Anthropic/Python 0.84.0
 X-Stainless-Arch:
 - arm64
 X-Stainless-Async:
 - 'false'
 X-Stainless-Lang:
 - python
 X-Stainless-OS:
 - MacOS
 X-Stainless-Package-Version:
 - 0.84.0
 X-Stainless-Runtime:
 - CPython
 X-Stainless-Runtime-Version:
 - 3.13.3
 anthropic-version:
 - '2023-06-01'
 x-stainless-read-timeout:
 - '600'
 x-stainless-retry-count:
 - '0'
 x-stainless-timeout:
 - '600'
 method: POST
 uri: https://api.anthropic.com/v1/messages
 response:
 body:
 string: '{"model":"claude-haiku-4-5-20251001","id":"msg_01NTFSpgrJwP5QJXAfN7unNz","type":"message","role":"assistant","content":[{"type":"text","text":"{\"answer\":2,\"label\":\"ok\"}"}],"stop_reason":"end_turn","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":183,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":0},"output_tokens":12,"service_tier":"standard","inference_geo":"not_available"}}'
 headers:
 CF-RAY:
 - 9e9a4ef71fa0ac9f-YYZ
 Connection:
 - keep-alive
 Content-Security-Policy:
 - default-src 'none'; frame-ancestors 'none'
 Content-Type:
 - application/json
 Date:
 - Thu, 09 Apr 2026 14:47:44 GMT
 Server:
 - cloudflare
 Transfer-Encoding:
 - chunked
 X-Robots-Tag:
 - none
 anthropic-organization-id:
 - 27796668-7351-40ac-acc4-024aee8995a5
 anthropic-ratelimit-input-tokens-limit:
 - '4000000'
 anthropic-ratelimit-input-tokens-remaining:
 - '4000000'
 anthropic-ratelimit-input-tokens-reset:
 - '2026-04-09T14:47:44Z'
 anthropic-ratelimit-output-tokens-limit:
 - '800000'
 anthropic-ratelimit-output-tokens-remaining:
 - '800000'
 anthropic-ratelimit-output-tokens-reset:
 - '2026-04-09T14:47:44Z'
 anthropic-ratelimit-requests-limit:
 - '20000'
 anthropic-ratelimit-requests-remaining:
 - '19999'
 anthropic-ratelimit-requests-reset:
 - '2026-04-09T14:47:42Z'
 anthropic-ratelimit-tokens-limit:
 - '4800000'
 anthropic-ratelimit-tokens-remaining:
 - '4800000'
 anthropic-ratelimit-tokens-reset:
 - '2026-04-09T14:47:44Z'
 cf-cache-status:
 - DYNAMIC
 content-length:
 - '489'
 request-id:
 - req_011CZtP23rjNiGgHoNNfnj19
 server-timing:
 - x-originResponse;dur=3015
 set-cookie:
 - _cfuvid=Xtp25DVpHeIv9LXJ.bhbiwy2F5SYgJhWmQTVVFnyFQc-1775746061.9335136-1.0.1.1-mZBT5kq5Nw9Z32eTRtm5Pd7JQcZE432fC59pw5mr5cI;
 HttpOnly; SameSite=None; Secure; Path=/; Domain=api.anthropic.com
 strict-transport-security:
 - max-age=31536000; includeSubDomains; preload
 vary:
 - Accept-Encoding
 x-envoy-upstream-service-time:
 - '3012'
 status:
 code: 200
 message: OK
version: 1

101 changes: 100 additions & 1 deletion
py/src/braintrust/integrations/anthropic/test_anthropic.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -2,6 +2,8 @@
Tests to ensure we reliably wrap the Anthropic API.
"""

import inspect
import json
import time
import unittest.mock
from pathlib import Path
Expand All@@ -12,13 +14,27 @@
from braintrust import Attachment, logger
from braintrust.integrations.anthropic import AnthropicIntegration, wrap_anthropic
from braintrust.integrations.anthropic._utils import extract_anthropic_usage
from braintrust.integrations.anthropic.tracing import _get_input_from_kwargs, _log_message_to_span
from braintrust.integrations.anthropic.tracing import (
 _get_input_from_kwargs,
 _get_metadata_from_kwargs,
 _log_message_to_span,
)
from braintrust.test_helpers import init_test_logger


PROJECT_NAME = "test-anthropic-app"
MODEL = "claude-3-haiku-20240307" # use the cheapest model since answers dont matter
MULTIMODAL_MODEL = "claude-haiku-4-5-20251001"
STRUCTURED_OUTPUT_MODEL = "claude-haiku-4-5"
STRUCTURED_OUTPUT_SCHEMA = {
 "type": "object",
 "properties": {
 "answer": {"type": "integer"},
 "label": {"type": "string"},
 },
 "required": ["answer", "label"],
 "additionalProperties": False,
}
PNG_BASE64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg=="
PDF_BASE64 = "JVBERi0xLjAKMSAwIG9iago8PC9UeXBlL0NhdGFsb2cvUGFnZXMgMiAwIFI+PmVuZG9iagoyIDAgb2JqCjw8L1R5cGUvUGFnZXMvS2lkc1szIDAgUl0vQ291bnQgMT4+ZW5kb2JqCjMgMCBvYmoKPDwvVHlwZS9QYWdlL01lZGlhQm94WzAgMCA2MTIgNzkyXT4+ZW5kb2JqCnhyZWYKMCA0CjAwMDAwMDAwMDAgNjU1MzUgZg0KMDAwMDAwMDAxMCAwMDAwMCBuDQowMDAwMDAwMDUzIDAwMDAwIG4NCjAwMDAwMDAxMDIgMDAwMDAgbg0KdHJhaWxlcgo8PC9TaXplIDQvUm9vdCAxIDAgUj4+CnN0YXJ0eHJlZgoxNDkKJUVPRg=="

Expand All@@ -36,6 +52,29 @@ def _get_async_client():
 return anthropic.AsyncAnthropic()


def _get_supported_structured_output_param():
 parameter_names = inspect.signature(_get_client().messages.create).parameters
 if "output_config" in parameter_names:
 return (
 "output_config",
 {
 "format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 }
 },
 )
 if "output_format" in parameter_names:
 return (
 "output_format",
 {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 },
 )
 pytest.skip("Installed anthropic SDK does not support structured outputs parameters")


@pytest.fixture
def memory_logger():
 init_test_logger(PROJECT_NAME)
Expand DownExpand Up@@ -94,6 +133,39 @@ def test_get_input_from_kwargs_converts_multimodal_base64_blocks_to_attachments(
 assert PDF_BASE64 not in serialized


def test_get_metadata_from_kwargs_includes_structured_output_params():
 metadata = _get_metadata_from_kwargs(
 {
 "model": MODEL,
 "output_config": {
 "format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 }
 },
 "output_format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 },
 }
 )

 assert metadata == {
 "provider": "anthropic",
 "model": MODEL,
 "output_config": {
 "format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 }
 },
 "output_format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 },
 }


def test_log_message_to_span_includes_stop_reason_and_stop_sequence():
 span = unittest.mock.MagicMock()
 message = SimpleNamespace(
Expand DownExpand Up@@ -333,6 +405,33 @@ def test_anthropic_messages_create_stream_true(memory_logger):
 assert "12" in span["output"]["content"][0]["text"]


@pytest.mark.vcr
def test_anthropic_messages_create_tracks_structured_outputs_metadata(memory_logger):
 assert not memory_logger.pop()

 structured_output_param_name, structured_output_param_value = _get_supported_structured_output_param()
 client = wrap_anthropic(_get_client())
 response = client.messages.create(
 model=STRUCTURED_OUTPUT_MODEL,
 max_tokens=128,
 messages=[
 {
 "role": "user",
 "content": 'Return a JSON object with answer=2 and label="ok".',
 }
 ],
 **{structured_output_param_name: structured_output_param_value},
 )

 assert json.loads(response.content[0].text) == {"answer": 2, "label": "ok"}

 spans = memory_logger.pop()
 assert len(spans) == 1
 span = spans[0]
 assert span["metadata"]["model"] == STRUCTURED_OUTPUT_MODEL
 assert span["metadata"][structured_output_param_name] == structured_output_param_value


@pytest.mark.vcr
def test_anthropic_messages_model_params_inputs(memory_logger):
 assert not memory_logger.pop()
Expand Down

2 changes: 2 additions & 0 deletions
py/src/braintrust/integrations/anthropic/tracing.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -38,6 +38,8 @@ def accumulate_event(event=None, current_snapshot=None, **kwargs):
 "tools",
 "stream",
 "thinking",
 "output_config",
 "output_format",
)


Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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 Merged

Abhijeet Prasad (AbhiPrasad)
merged 1 commit into

from

Apr 9, 2026
 Merged


fix(anthropic): capture structured output metadata
#238
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110 changes: 110 additions & 0 deletions
...nthropic/cassettes/test_anthropic_messages_create_tracks_structured_outputs_metadata.yaml

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,110 @@
interactions:
- request:
 body: '{"max_tokens":128,"messages":[{"role":"user","content":"Return a JSON object
 with answer=2 and label=\"ok\"."}],"model":"claude-haiku-4-5","output_config":{"format":{"type":"json_schema","schema":{"type":"object","properties":{"answer":{"type":"integer"},"label":{"type":"string"}},"required":["answer","label"],"additionalProperties":false}}}}'
 headers:
 Accept:
 - application/json
 Accept-Encoding:
 - gzip, deflate, zstd
 Connection:
 - keep-alive
 Content-Length:
 - '344'
 Content-Type:
 - application/json
 Host:
 - api.anthropic.com
 User-Agent:
 - Anthropic/Python 0.84.0
 X-Stainless-Arch:
 - arm64
 X-Stainless-Async:
 - 'false'
 X-Stainless-Lang:
 - python
 X-Stainless-OS:
 - MacOS
 X-Stainless-Package-Version:
 - 0.84.0
 X-Stainless-Runtime:
 - CPython
 X-Stainless-Runtime-Version:
 - 3.13.3
 anthropic-version:
 - '2023-06-01'
 x-stainless-read-timeout:
 - '600'
 x-stainless-retry-count:
 - '0'
 x-stainless-timeout:
 - '600'
 method: POST
 uri: https://api.anthropic.com/v1/messages
 response:
 body:
 string: '{"model":"claude-haiku-4-5-20251001","id":"msg_01NTFSpgrJwP5QJXAfN7unNz","type":"message","role":"assistant","content":[{"type":"text","text":"{\"answer\":2,\"label\":\"ok\"}"}],"stop_reason":"end_turn","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":183,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":0},"output_tokens":12,"service_tier":"standard","inference_geo":"not_available"}}'
 headers:
 CF-RAY:
 - 9e9a4ef71fa0ac9f-YYZ
 Connection:
 - keep-alive
 Content-Security-Policy:
 - default-src 'none'; frame-ancestors 'none'
 Content-Type:
 - application/json
 Date:
 - Thu, 09 Apr 2026 14:47:44 GMT
 Server:
 - cloudflare
 Transfer-Encoding:
 - chunked
 X-Robots-Tag:
 - none
 anthropic-organization-id:
 - 27796668-7351-40ac-acc4-024aee8995a5
 anthropic-ratelimit-input-tokens-limit:
 - '4000000'
 anthropic-ratelimit-input-tokens-remaining:
 - '4000000'
 anthropic-ratelimit-input-tokens-reset:
 - '2026-04-09T14:47:44Z'
 anthropic-ratelimit-output-tokens-limit:
 - '800000'
 anthropic-ratelimit-output-tokens-remaining:
 - '800000'
 anthropic-ratelimit-output-tokens-reset:
 - '2026-04-09T14:47:44Z'
 anthropic-ratelimit-requests-limit:
 - '20000'
 anthropic-ratelimit-requests-remaining:
 - '19999'
 anthropic-ratelimit-requests-reset:
 - '2026-04-09T14:47:42Z'
 anthropic-ratelimit-tokens-limit:
 - '4800000'
 anthropic-ratelimit-tokens-remaining:
 - '4800000'
 anthropic-ratelimit-tokens-reset:
 - '2026-04-09T14:47:44Z'
 cf-cache-status:
 - DYNAMIC
 content-length:
 - '489'
 request-id:
 - req_011CZtP23rjNiGgHoNNfnj19
 server-timing:
 - x-originResponse;dur=3015
 set-cookie:
 - _cfuvid=Xtp25DVpHeIv9LXJ.bhbiwy2F5SYgJhWmQTVVFnyFQc-1775746061.9335136-1.0.1.1-mZBT5kq5Nw9Z32eTRtm5Pd7JQcZE432fC59pw5mr5cI;
 HttpOnly; SameSite=None; Secure; Path=/; Domain=api.anthropic.com
 strict-transport-security:
 - max-age=31536000; includeSubDomains; preload
 vary:
 - Accept-Encoding
 x-envoy-upstream-service-time:
 - '3012'
 status:
 code: 200
 message: OK
version: 1

101 changes: 100 additions & 1 deletion
py/src/braintrust/integrations/anthropic/test_anthropic.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -2,6 +2,8 @@
Tests to ensure we reliably wrap the Anthropic API.
"""

import inspect
import json
import time
import unittest.mock
from pathlib import Path
Expand All@@ -12,13 +14,27 @@
from braintrust import Attachment, logger
from braintrust.integrations.anthropic import AnthropicIntegration, wrap_anthropic
from braintrust.integrations.anthropic._utils import extract_anthropic_usage
from braintrust.integrations.anthropic.tracing import _get_input_from_kwargs, _log_message_to_span
from braintrust.integrations.anthropic.tracing import (
 _get_input_from_kwargs,
 _get_metadata_from_kwargs,
 _log_message_to_span,
)
from braintrust.test_helpers import init_test_logger


PROJECT_NAME = "test-anthropic-app"
MODEL = "claude-3-haiku-20240307" # use the cheapest model since answers dont matter
MULTIMODAL_MODEL = "claude-haiku-4-5-20251001"
STRUCTURED_OUTPUT_MODEL = "claude-haiku-4-5"
STRUCTURED_OUTPUT_SCHEMA = {
 "type": "object",
 "properties": {
 "answer": {"type": "integer"},
 "label": {"type": "string"},
 },
 "required": ["answer", "label"],
 "additionalProperties": False,
}
PNG_BASE64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg=="
PDF_BASE64 = "JVBERi0xLjAKMSAwIG9iago8PC9UeXBlL0NhdGFsb2cvUGFnZXMgMiAwIFI+PmVuZG9iagoyIDAgb2JqCjw8L1R5cGUvUGFnZXMvS2lkc1szIDAgUl0vQ291bnQgMT4+ZW5kb2JqCjMgMCBvYmoKPDwvVHlwZS9QYWdlL01lZGlhQm94WzAgMCA2MTIgNzkyXT4+ZW5kb2JqCnhyZWYKMCA0CjAwMDAwMDAwMDAgNjU1MzUgZg0KMDAwMDAwMDAxMCAwMDAwMCBuDQowMDAwMDAwMDUzIDAwMDAwIG4NCjAwMDAwMDAxMDIgMDAwMDAgbg0KdHJhaWxlcgo8PC9TaXplIDQvUm9vdCAxIDAgUj4+CnN0YXJ0eHJlZgoxNDkKJUVPRg=="

Expand All@@ -36,6 +52,29 @@ def _get_async_client():
 return anthropic.AsyncAnthropic()


def _get_supported_structured_output_param():
 parameter_names = inspect.signature(_get_client().messages.create).parameters
 if "output_config" in parameter_names:
 return (
 "output_config",
 {
 "format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 }
 },
 )
 if "output_format" in parameter_names:
 return (
 "output_format",
 {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 },
 )
 pytest.skip("Installed anthropic SDK does not support structured outputs parameters")


@pytest.fixture
def memory_logger():
 init_test_logger(PROJECT_NAME)
Expand DownExpand Up@@ -94,6 +133,39 @@ def test_get_input_from_kwargs_converts_multimodal_base64_blocks_to_attachments(
 assert PDF_BASE64 not in serialized


def test_get_metadata_from_kwargs_includes_structured_output_params():
 metadata = _get_metadata_from_kwargs(
 {
 "model": MODEL,
 "output_config": {
 "format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 }
 },
 "output_format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 },
 }
 )

 assert metadata == {
 "provider": "anthropic",
 "model": MODEL,
 "output_config": {
 "format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 }
 },
 "output_format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 },
 }


def test_log_message_to_span_includes_stop_reason_and_stop_sequence():
 span = unittest.mock.MagicMock()
 message = SimpleNamespace(
Expand DownExpand Up@@ -333,6 +405,33 @@ def test_anthropic_messages_create_stream_true(memory_logger):
 assert "12" in span["output"]["content"][0]["text"]


@pytest.mark.vcr
def test_anthropic_messages_create_tracks_structured_outputs_metadata(memory_logger):
 assert not memory_logger.pop()

 structured_output_param_name, structured_output_param_value = _get_supported_structured_output_param()
 client = wrap_anthropic(_get_client())
 response = client.messages.create(
 model=STRUCTURED_OUTPUT_MODEL,
 max_tokens=128,
 messages=[
 {
 "role": "user",
 "content": 'Return a JSON object with answer=2 and label="ok".',
 }
 ],
 **{structured_output_param_name: structured_output_param_value},
 )

 assert json.loads(response.content[0].text) == {"answer": 2, "label": "ok"}

 spans = memory_logger.pop()
 assert len(spans) == 1
 span = spans[0]
 assert span["metadata"]["model"] == STRUCTURED_OUTPUT_MODEL
 assert span["metadata"][structured_output_param_name] == structured_output_param_value


@pytest.mark.vcr
def test_anthropic_messages_model_params_inputs(memory_logger):
 assert not memory_logger.pop()
Expand Down

2 changes: 2 additions & 0 deletions
py/src/braintrust/integrations/anthropic/tracing.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -38,6 +38,8 @@ def accumulate_event(event=None, current_snapshot=None, **kwargs):
 "tools",
 "stream",
 "thinking",
 "output_config",
 "output_format",
)


Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

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fix(anthropic): capture structured output metadata#238

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 Merged

Abhijeet Prasad (AbhiPrasad)
merged 1 commit into

from

Apr 9, 2026
 Merged


fix(anthropic): capture structured output metadata
#238
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110 changes: 110 additions & 0 deletions
...nthropic/cassettes/test_anthropic_messages_create_tracks_structured_outputs_metadata.yaml

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,110 @@
interactions:
- request:
 body: '{"max_tokens":128,"messages":[{"role":"user","content":"Return a JSON object
 with answer=2 and label=\"ok\"."}],"model":"claude-haiku-4-5","output_config":{"format":{"type":"json_schema","schema":{"type":"object","properties":{"answer":{"type":"integer"},"label":{"type":"string"}},"required":["answer","label"],"additionalProperties":false}}}}'
 headers:
 Accept:
 - application/json
 Accept-Encoding:
 - gzip, deflate, zstd
 Connection:
 - keep-alive
 Content-Length:
 - '344'
 Content-Type:
 - application/json
 Host:
 - api.anthropic.com
 User-Agent:
 - Anthropic/Python 0.84.0
 X-Stainless-Arch:
 - arm64
 X-Stainless-Async:
 - 'false'
 X-Stainless-Lang:
 - python
 X-Stainless-OS:
 - MacOS
 X-Stainless-Package-Version:
 - 0.84.0
 X-Stainless-Runtime:
 - CPython
 X-Stainless-Runtime-Version:
 - 3.13.3
 anthropic-version:
 - '2023-06-01'
 x-stainless-read-timeout:
 - '600'
 x-stainless-retry-count:
 - '0'
 x-stainless-timeout:
 - '600'
 method: POST
 uri: https://api.anthropic.com/v1/messages
 response:
 body:
 string: '{"model":"claude-haiku-4-5-20251001","id":"msg_01NTFSpgrJwP5QJXAfN7unNz","type":"message","role":"assistant","content":[{"type":"text","text":"{\"answer\":2,\"label\":\"ok\"}"}],"stop_reason":"end_turn","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":183,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":0},"output_tokens":12,"service_tier":"standard","inference_geo":"not_available"}}'
 headers:
 CF-RAY:
 - 9e9a4ef71fa0ac9f-YYZ
 Connection:
 - keep-alive
 Content-Security-Policy:
 - default-src 'none'; frame-ancestors 'none'
 Content-Type:
 - application/json
 Date:
 - Thu, 09 Apr 2026 14:47:44 GMT
 Server:
 - cloudflare
 Transfer-Encoding:
 - chunked
 X-Robots-Tag:
 - none
 anthropic-organization-id:
 - 27796668-7351-40ac-acc4-024aee8995a5
 anthropic-ratelimit-input-tokens-limit:
 - '4000000'
 anthropic-ratelimit-input-tokens-remaining:
 - '4000000'
 anthropic-ratelimit-input-tokens-reset:
 - '2026-04-09T14:47:44Z'
 anthropic-ratelimit-output-tokens-limit:
 - '800000'
 anthropic-ratelimit-output-tokens-remaining:
 - '800000'
 anthropic-ratelimit-output-tokens-reset:
 - '2026-04-09T14:47:44Z'
 anthropic-ratelimit-requests-limit:
 - '20000'
 anthropic-ratelimit-requests-remaining:
 - '19999'
 anthropic-ratelimit-requests-reset:
 - '2026-04-09T14:47:42Z'
 anthropic-ratelimit-tokens-limit:
 - '4800000'
 anthropic-ratelimit-tokens-remaining:
 - '4800000'
 anthropic-ratelimit-tokens-reset:
 - '2026-04-09T14:47:44Z'
 cf-cache-status:
 - DYNAMIC
 content-length:
 - '489'
 request-id:
 - req_011CZtP23rjNiGgHoNNfnj19
 server-timing:
 - x-originResponse;dur=3015
 set-cookie:
 - _cfuvid=Xtp25DVpHeIv9LXJ.bhbiwy2F5SYgJhWmQTVVFnyFQc-1775746061.9335136-1.0.1.1-mZBT5kq5Nw9Z32eTRtm5Pd7JQcZE432fC59pw5mr5cI;
 HttpOnly; SameSite=None; Secure; Path=/; Domain=api.anthropic.com
 strict-transport-security:
 - max-age=31536000; includeSubDomains; preload
 vary:
 - Accept-Encoding
 x-envoy-upstream-service-time:
 - '3012'
 status:
 code: 200
 message: OK
version: 1

101 changes: 100 additions & 1 deletion
py/src/braintrust/integrations/anthropic/test_anthropic.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -2,6 +2,8 @@
Tests to ensure we reliably wrap the Anthropic API.
"""

import inspect
import json
import time
import unittest.mock
from pathlib import Path
Expand All@@ -12,13 +14,27 @@
from braintrust import Attachment, logger
from braintrust.integrations.anthropic import AnthropicIntegration, wrap_anthropic
from braintrust.integrations.anthropic._utils import extract_anthropic_usage
from braintrust.integrations.anthropic.tracing import _get_input_from_kwargs, _log_message_to_span
from braintrust.integrations.anthropic.tracing import (
 _get_input_from_kwargs,
 _get_metadata_from_kwargs,
 _log_message_to_span,
)
from braintrust.test_helpers import init_test_logger


PROJECT_NAME = "test-anthropic-app"
MODEL = "claude-3-haiku-20240307" # use the cheapest model since answers dont matter
MULTIMODAL_MODEL = "claude-haiku-4-5-20251001"
STRUCTURED_OUTPUT_MODEL = "claude-haiku-4-5"
STRUCTURED_OUTPUT_SCHEMA = {
 "type": "object",
 "properties": {
 "answer": {"type": "integer"},
 "label": {"type": "string"},
 },
 "required": ["answer", "label"],
 "additionalProperties": False,
}
PNG_BASE64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg=="
PDF_BASE64 = "JVBERi0xLjAKMSAwIG9iago8PC9UeXBlL0NhdGFsb2cvUGFnZXMgMiAwIFI+PmVuZG9iagoyIDAgb2JqCjw8L1R5cGUvUGFnZXMvS2lkc1szIDAgUl0vQ291bnQgMT4+ZW5kb2JqCjMgMCBvYmoKPDwvVHlwZS9QYWdlL01lZGlhQm94WzAgMCA2MTIgNzkyXT4+ZW5kb2JqCnhyZWYKMCA0CjAwMDAwMDAwMDAgNjU1MzUgZg0KMDAwMDAwMDAxMCAwMDAwMCBuDQowMDAwMDAwMDUzIDAwMDAwIG4NCjAwMDAwMDAxMDIgMDAwMDAgbg0KdHJhaWxlcgo8PC9TaXplIDQvUm9vdCAxIDAgUj4+CnN0YXJ0eHJlZgoxNDkKJUVPRg=="

Expand All@@ -36,6 +52,29 @@ def _get_async_client():
 return anthropic.AsyncAnthropic()


def _get_supported_structured_output_param():
 parameter_names = inspect.signature(_get_client().messages.create).parameters
 if "output_config" in parameter_names:
 return (
 "output_config",
 {
 "format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 }
 },
 )
 if "output_format" in parameter_names:
 return (
 "output_format",
 {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 },
 )
 pytest.skip("Installed anthropic SDK does not support structured outputs parameters")


@pytest.fixture
def memory_logger():
 init_test_logger(PROJECT_NAME)
Expand DownExpand Up@@ -94,6 +133,39 @@ def test_get_input_from_kwargs_converts_multimodal_base64_blocks_to_attachments(
 assert PDF_BASE64 not in serialized


def test_get_metadata_from_kwargs_includes_structured_output_params():
 metadata = _get_metadata_from_kwargs(
 {
 "model": MODEL,
 "output_config": {
 "format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 }
 },
 "output_format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 },
 }
 )

 assert metadata == {
 "provider": "anthropic",
 "model": MODEL,
 "output_config": {
 "format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 }
 },
 "output_format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 },
 }


def test_log_message_to_span_includes_stop_reason_and_stop_sequence():
 span = unittest.mock.MagicMock()
 message = SimpleNamespace(
Expand DownExpand Up@@ -333,6 +405,33 @@ def test_anthropic_messages_create_stream_true(memory_logger):
 assert "12" in span["output"]["content"][0]["text"]


@pytest.mark.vcr
def test_anthropic_messages_create_tracks_structured_outputs_metadata(memory_logger):
 assert not memory_logger.pop()

 structured_output_param_name, structured_output_param_value = _get_supported_structured_output_param()
 client = wrap_anthropic(_get_client())
 response = client.messages.create(
 model=STRUCTURED_OUTPUT_MODEL,
 max_tokens=128,
 messages=[
 {
 "role": "user",
 "content": 'Return a JSON object with answer=2 and label="ok".',
 }
 ],
 **{structured_output_param_name: structured_output_param_value},
 )

 assert json.loads(response.content[0].text) == {"answer": 2, "label": "ok"}

 spans = memory_logger.pop()
 assert len(spans) == 1
 span = spans[0]
 assert span["metadata"]["model"] == STRUCTURED_OUTPUT_MODEL
 assert span["metadata"][structured_output_param_name] == structured_output_param_value


@pytest.mark.vcr
def test_anthropic_messages_model_params_inputs(memory_logger):
 assert not memory_logger.pop()
Expand Down

2 changes: 2 additions & 0 deletions
py/src/braintrust/integrations/anthropic/tracing.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -38,6 +38,8 @@ def accumulate_event(event=None, current_snapshot=None, **kwargs):
 "tools",
 "stream",
 "thinking",
 "output_config",
 "output_format",
)


Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
fix(anthropic): capture structured output metadata#238

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Sign in
to your account

 Merged

Abhijeet Prasad (AbhiPrasad)
merged 1 commit into

from

Apr 9, 2026
 Merged


fix(anthropic): capture structured output metadata
#238
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110 changes: 110 additions & 0 deletions
...nthropic/cassettes/test_anthropic_messages_create_tracks_structured_outputs_metadata.yaml

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,110 @@
interactions:
- request:
 body: '{"max_tokens":128,"messages":[{"role":"user","content":"Return a JSON object
 with answer=2 and label=\"ok\"."}],"model":"claude-haiku-4-5","output_config":{"format":{"type":"json_schema","schema":{"type":"object","properties":{"answer":{"type":"integer"},"label":{"type":"string"}},"required":["answer","label"],"additionalProperties":false}}}}'
 headers:
 Accept:
 - application/json
 Accept-Encoding:
 - gzip, deflate, zstd
 Connection:
 - keep-alive
 Content-Length:
 - '344'
 Content-Type:
 - application/json
 Host:
 - api.anthropic.com
 User-Agent:
 - Anthropic/Python 0.84.0
 X-Stainless-Arch:
 - arm64
 X-Stainless-Async:
 - 'false'
 X-Stainless-Lang:
 - python
 X-Stainless-OS:
 - MacOS
 X-Stainless-Package-Version:
 - 0.84.0
 X-Stainless-Runtime:
 - CPython
 X-Stainless-Runtime-Version:
 - 3.13.3
 anthropic-version:
 - '2023-06-01'
 x-stainless-read-timeout:
 - '600'
 x-stainless-retry-count:
 - '0'
 x-stainless-timeout:
 - '600'
 method: POST
 uri: https://api.anthropic.com/v1/messages
 response:
 body:
 string: '{"model":"claude-haiku-4-5-20251001","id":"msg_01NTFSpgrJwP5QJXAfN7unNz","type":"message","role":"assistant","content":[{"type":"text","text":"{\"answer\":2,\"label\":\"ok\"}"}],"stop_reason":"end_turn","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":183,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":0},"output_tokens":12,"service_tier":"standard","inference_geo":"not_available"}}'
 headers:
 CF-RAY:
 - 9e9a4ef71fa0ac9f-YYZ
 Connection:
 - keep-alive
 Content-Security-Policy:
 - default-src 'none'; frame-ancestors 'none'
 Content-Type:
 - application/json
 Date:
 - Thu, 09 Apr 2026 14:47:44 GMT
 Server:
 - cloudflare
 Transfer-Encoding:
 - chunked
 X-Robots-Tag:
 - none
 anthropic-organization-id:
 - 27796668-7351-40ac-acc4-024aee8995a5
 anthropic-ratelimit-input-tokens-limit:
 - '4000000'
 anthropic-ratelimit-input-tokens-remaining:
 - '4000000'
 anthropic-ratelimit-input-tokens-reset:
 - '2026-04-09T14:47:44Z'
 anthropic-ratelimit-output-tokens-limit:
 - '800000'
 anthropic-ratelimit-output-tokens-remaining:
 - '800000'
 anthropic-ratelimit-output-tokens-reset:
 - '2026-04-09T14:47:44Z'
 anthropic-ratelimit-requests-limit:
 - '20000'
 anthropic-ratelimit-requests-remaining:
 - '19999'
 anthropic-ratelimit-requests-reset:
 - '2026-04-09T14:47:42Z'
 anthropic-ratelimit-tokens-limit:
 - '4800000'
 anthropic-ratelimit-tokens-remaining:
 - '4800000'
 anthropic-ratelimit-tokens-reset:
 - '2026-04-09T14:47:44Z'
 cf-cache-status:
 - DYNAMIC
 content-length:
 - '489'
 request-id:
 - req_011CZtP23rjNiGgHoNNfnj19
 server-timing:
 - x-originResponse;dur=3015
 set-cookie:
 - _cfuvid=Xtp25DVpHeIv9LXJ.bhbiwy2F5SYgJhWmQTVVFnyFQc-1775746061.9335136-1.0.1.1-mZBT5kq5Nw9Z32eTRtm5Pd7JQcZE432fC59pw5mr5cI;
 HttpOnly; SameSite=None; Secure; Path=/; Domain=api.anthropic.com
 strict-transport-security:
 - max-age=31536000; includeSubDomains; preload
 vary:
 - Accept-Encoding
 x-envoy-upstream-service-time:
 - '3012'
 status:
 code: 200
 message: OK
version: 1

101 changes: 100 additions & 1 deletion
py/src/braintrust/integrations/anthropic/test_anthropic.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -2,6 +2,8 @@
Tests to ensure we reliably wrap the Anthropic API.
"""

import inspect
import json
import time
import unittest.mock
from pathlib import Path
Expand All@@ -12,13 +14,27 @@
from braintrust import Attachment, logger
from braintrust.integrations.anthropic import AnthropicIntegration, wrap_anthropic
from braintrust.integrations.anthropic._utils import extract_anthropic_usage
from braintrust.integrations.anthropic.tracing import _get_input_from_kwargs, _log_message_to_span
from braintrust.integrations.anthropic.tracing import (
 _get_input_from_kwargs,
 _get_metadata_from_kwargs,
 _log_message_to_span,
)
from braintrust.test_helpers import init_test_logger


PROJECT_NAME = "test-anthropic-app"
MODEL = "claude-3-haiku-20240307" # use the cheapest model since answers dont matter
MULTIMODAL_MODEL = "claude-haiku-4-5-20251001"
STRUCTURED_OUTPUT_MODEL = "claude-haiku-4-5"
STRUCTURED_OUTPUT_SCHEMA = {
 "type": "object",
 "properties": {
 "answer": {"type": "integer"},
 "label": {"type": "string"},
 },
 "required": ["answer", "label"],
 "additionalProperties": False,
}
PNG_BASE64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg=="
PDF_BASE64 = "JVBERi0xLjAKMSAwIG9iago8PC9UeXBlL0NhdGFsb2cvUGFnZXMgMiAwIFI+PmVuZG9iagoyIDAgb2JqCjw8L1R5cGUvUGFnZXMvS2lkc1szIDAgUl0vQ291bnQgMT4+ZW5kb2JqCjMgMCBvYmoKPDwvVHlwZS9QYWdlL01lZGlhQm94WzAgMCA2MTIgNzkyXT4+ZW5kb2JqCnhyZWYKMCA0CjAwMDAwMDAwMDAgNjU1MzUgZg0KMDAwMDAwMDAxMCAwMDAwMCBuDQowMDAwMDAwMDUzIDAwMDAwIG4NCjAwMDAwMDAxMDIgMDAwMDAgbg0KdHJhaWxlcgo8PC9TaXplIDQvUm9vdCAxIDAgUj4+CnN0YXJ0eHJlZgoxNDkKJUVPRg=="

Expand All@@ -36,6 +52,29 @@ def _get_async_client():
 return anthropic.AsyncAnthropic()


def _get_supported_structured_output_param():
 parameter_names = inspect.signature(_get_client().messages.create).parameters
 if "output_config" in parameter_names:
 return (
 "output_config",
 {
 "format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 }
 },
 )
 if "output_format" in parameter_names:
 return (
 "output_format",
 {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 },
 )
 pytest.skip("Installed anthropic SDK does not support structured outputs parameters")


@pytest.fixture
def memory_logger():
 init_test_logger(PROJECT_NAME)
Expand DownExpand Up@@ -94,6 +133,39 @@ def test_get_input_from_kwargs_converts_multimodal_base64_blocks_to_attachments(
 assert PDF_BASE64 not in serialized


def test_get_metadata_from_kwargs_includes_structured_output_params():
 metadata = _get_metadata_from_kwargs(
 {
 "model": MODEL,
 "output_config": {
 "format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 }
 },
 "output_format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 },
 }
 )

 assert metadata == {
 "provider": "anthropic",
 "model": MODEL,
 "output_config": {
 "format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 }
 },
 "output_format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 },
 }


def test_log_message_to_span_includes_stop_reason_and_stop_sequence():
 span = unittest.mock.MagicMock()
 message = SimpleNamespace(
Expand DownExpand Up@@ -333,6 +405,33 @@ def test_anthropic_messages_create_stream_true(memory_logger):
 assert "12" in span["output"]["content"][0]["text"]


@pytest.mark.vcr
def test_anthropic_messages_create_tracks_structured_outputs_metadata(memory_logger):
 assert not memory_logger.pop()

 structured_output_param_name, structured_output_param_value = _get_supported_structured_output_param()
 client = wrap_anthropic(_get_client())
 response = client.messages.create(
 model=STRUCTURED_OUTPUT_MODEL,
 max_tokens=128,
 messages=[
 {
 "role": "user",
 "content": 'Return a JSON object with answer=2 and label="ok".',
 }
 ],
 **{structured_output_param_name: structured_output_param_value},
 )

 assert json.loads(response.content[0].text) == {"answer": 2, "label": "ok"}

 spans = memory_logger.pop()
 assert len(spans) == 1
 span = spans[0]
 assert span["metadata"]["model"] == STRUCTURED_OUTPUT_MODEL
 assert span["metadata"][structured_output_param_name] == structured_output_param_value


@pytest.mark.vcr
def test_anthropic_messages_model_params_inputs(memory_logger):
 assert not memory_logger.pop()
Expand Down

2 changes: 2 additions & 0 deletions
py/src/braintrust/integrations/anthropic/tracing.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -38,6 +38,8 @@ def accumulate_event(event=None, current_snapshot=None, **kwargs):
 "tools",
 "stream",
 "thinking",
 "output_config",
 "output_format",
)


Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
fix(anthropic): capture structured output metadata#238

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

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By clicking “Sign up for GitHub”, you agree to our terms of service and
privacy statement. We’ll occasionally send you account related emails.

Already on GitHub?
Sign in
to your account

 Merged

Abhijeet Prasad (AbhiPrasad)
merged 1 commit into

from

Apr 9, 2026
 Merged


fix(anthropic): capture structured output metadata
#238
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Conversations

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 Diff view


110 changes: 110 additions & 0 deletions
...nthropic/cassettes/test_anthropic_messages_create_tracks_structured_outputs_metadata.yaml

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,110 @@
interactions:
- request:
 body: '{"max_tokens":128,"messages":[{"role":"user","content":"Return a JSON object
 with answer=2 and label=\"ok\"."}],"model":"claude-haiku-4-5","output_config":{"format":{"type":"json_schema","schema":{"type":"object","properties":{"answer":{"type":"integer"},"label":{"type":"string"}},"required":["answer","label"],"additionalProperties":false}}}}'
 headers:
 Accept:
 - application/json
 Accept-Encoding:
 - gzip, deflate, zstd
 Connection:
 - keep-alive
 Content-Length:
 - '344'
 Content-Type:
 - application/json
 Host:
 - api.anthropic.com
 User-Agent:
 - Anthropic/Python 0.84.0
 X-Stainless-Arch:
 - arm64
 X-Stainless-Async:
 - 'false'
 X-Stainless-Lang:
 - python
 X-Stainless-OS:
 - MacOS
 X-Stainless-Package-Version:
 - 0.84.0
 X-Stainless-Runtime:
 - CPython
 X-Stainless-Runtime-Version:
 - 3.13.3
 anthropic-version:
 - '2023-06-01'
 x-stainless-read-timeout:
 - '600'
 x-stainless-retry-count:
 - '0'
 x-stainless-timeout:
 - '600'
 method: POST
 uri: https://api.anthropic.com/v1/messages
 response:
 body:
 string: '{"model":"claude-haiku-4-5-20251001","id":"msg_01NTFSpgrJwP5QJXAfN7unNz","type":"message","role":"assistant","content":[{"type":"text","text":"{\"answer\":2,\"label\":\"ok\"}"}],"stop_reason":"end_turn","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":183,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":0},"output_tokens":12,"service_tier":"standard","inference_geo":"not_available"}}'
 headers:
 CF-RAY:
 - 9e9a4ef71fa0ac9f-YYZ
 Connection:
 - keep-alive
 Content-Security-Policy:
 - default-src 'none'; frame-ancestors 'none'
 Content-Type:
 - application/json
 Date:
 - Thu, 09 Apr 2026 14:47:44 GMT
 Server:
 - cloudflare
 Transfer-Encoding:
 - chunked
 X-Robots-Tag:
 - none
 anthropic-organization-id:
 - 27796668-7351-40ac-acc4-024aee8995a5
 anthropic-ratelimit-input-tokens-limit:
 - '4000000'
 anthropic-ratelimit-input-tokens-remaining:
 - '4000000'
 anthropic-ratelimit-input-tokens-reset:
 - '2026-04-09T14:47:44Z'
 anthropic-ratelimit-output-tokens-limit:
 - '800000'
 anthropic-ratelimit-output-tokens-remaining:
 - '800000'
 anthropic-ratelimit-output-tokens-reset:
 - '2026-04-09T14:47:44Z'
 anthropic-ratelimit-requests-limit:
 - '20000'
 anthropic-ratelimit-requests-remaining:
 - '19999'
 anthropic-ratelimit-requests-reset:
 - '2026-04-09T14:47:42Z'
 anthropic-ratelimit-tokens-limit:
 - '4800000'
 anthropic-ratelimit-tokens-remaining:
 - '4800000'
 anthropic-ratelimit-tokens-reset:
 - '2026-04-09T14:47:44Z'
 cf-cache-status:
 - DYNAMIC
 content-length:
 - '489'
 request-id:
 - req_011CZtP23rjNiGgHoNNfnj19
 server-timing:
 - x-originResponse;dur=3015
 set-cookie:
 - _cfuvid=Xtp25DVpHeIv9LXJ.bhbiwy2F5SYgJhWmQTVVFnyFQc-1775746061.9335136-1.0.1.1-mZBT5kq5Nw9Z32eTRtm5Pd7JQcZE432fC59pw5mr5cI;
 HttpOnly; SameSite=None; Secure; Path=/; Domain=api.anthropic.com
 strict-transport-security:
 - max-age=31536000; includeSubDomains; preload
 vary:
 - Accept-Encoding
 x-envoy-upstream-service-time:
 - '3012'
 status:
 code: 200
 message: OK
version: 1

101 changes: 100 additions & 1 deletion
py/src/braintrust/integrations/anthropic/test_anthropic.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -2,6 +2,8 @@
Tests to ensure we reliably wrap the Anthropic API.
"""

import inspect
import json
import time
import unittest.mock
from pathlib import Path
Expand All@@ -12,13 +14,27 @@
from braintrust import Attachment, logger
from braintrust.integrations.anthropic import AnthropicIntegration, wrap_anthropic
from braintrust.integrations.anthropic._utils import extract_anthropic_usage
from braintrust.integrations.anthropic.tracing import _get_input_from_kwargs, _log_message_to_span
from braintrust.integrations.anthropic.tracing import (
 _get_input_from_kwargs,
 _get_metadata_from_kwargs,
 _log_message_to_span,
)
from braintrust.test_helpers import init_test_logger


PROJECT_NAME = "test-anthropic-app"
MODEL = "claude-3-haiku-20240307" # use the cheapest model since answers dont matter
MULTIMODAL_MODEL = "claude-haiku-4-5-20251001"
STRUCTURED_OUTPUT_MODEL = "claude-haiku-4-5"
STRUCTURED_OUTPUT_SCHEMA = {
 "type": "object",
 "properties": {
 "answer": {"type": "integer"},
 "label": {"type": "string"},
 },
 "required": ["answer", "label"],
 "additionalProperties": False,
}
PNG_BASE64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg=="
PDF_BASE64 = "JVBERi0xLjAKMSAwIG9iago8PC9UeXBlL0NhdGFsb2cvUGFnZXMgMiAwIFI+PmVuZG9iagoyIDAgb2JqCjw8L1R5cGUvUGFnZXMvS2lkc1szIDAgUl0vQ291bnQgMT4+ZW5kb2JqCjMgMCBvYmoKPDwvVHlwZS9QYWdlL01lZGlhQm94WzAgMCA2MTIgNzkyXT4+ZW5kb2JqCnhyZWYKMCA0CjAwMDAwMDAwMDAgNjU1MzUgZg0KMDAwMDAwMDAxMCAwMDAwMCBuDQowMDAwMDAwMDUzIDAwMDAwIG4NCjAwMDAwMDAxMDIgMDAwMDAgbg0KdHJhaWxlcgo8PC9TaXplIDQvUm9vdCAxIDAgUj4+CnN0YXJ0eHJlZgoxNDkKJUVPRg=="

Expand All@@ -36,6 +52,29 @@ def _get_async_client():
 return anthropic.AsyncAnthropic()


def _get_supported_structured_output_param():
 parameter_names = inspect.signature(_get_client().messages.create).parameters
 if "output_config" in parameter_names:
 return (
 "output_config",
 {
 "format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 }
 },
 )
 if "output_format" in parameter_names:
 return (
 "output_format",
 {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 },
 )
 pytest.skip("Installed anthropic SDK does not support structured outputs parameters")


@pytest.fixture
def memory_logger():
 init_test_logger(PROJECT_NAME)
Expand DownExpand Up@@ -94,6 +133,39 @@ def test_get_input_from_kwargs_converts_multimodal_base64_blocks_to_attachments(
 assert PDF_BASE64 not in serialized


def test_get_metadata_from_kwargs_includes_structured_output_params():
 metadata = _get_metadata_from_kwargs(
 {
 "model": MODEL,
 "output_config": {
 "format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 }
 },
 "output_format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 },
 }
 )

 assert metadata == {
 "provider": "anthropic",
 "model": MODEL,
 "output_config": {
 "format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 }
 },
 "output_format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 },
 }


def test_log_message_to_span_includes_stop_reason_and_stop_sequence():
 span = unittest.mock.MagicMock()
 message = SimpleNamespace(
Expand DownExpand Up@@ -333,6 +405,33 @@ def test_anthropic_messages_create_stream_true(memory_logger):
 assert "12" in span["output"]["content"][0]["text"]


@pytest.mark.vcr
def test_anthropic_messages_create_tracks_structured_outputs_metadata(memory_logger):
 assert not memory_logger.pop()

 structured_output_param_name, structured_output_param_value = _get_supported_structured_output_param()
 client = wrap_anthropic(_get_client())
 response = client.messages.create(
 model=STRUCTURED_OUTPUT_MODEL,
 max_tokens=128,
 messages=[
 {
 "role": "user",
 "content": 'Return a JSON object with answer=2 and label="ok".',
 }
 ],
 **{structured_output_param_name: structured_output_param_value},
 )

 assert json.loads(response.content[0].text) == {"answer": 2, "label": "ok"}

 spans = memory_logger.pop()
 assert len(spans) == 1
 span = spans[0]
 assert span["metadata"]["model"] == STRUCTURED_OUTPUT_MODEL
 assert span["metadata"][structured_output_param_name] == structured_output_param_value


@pytest.mark.vcr
def test_anthropic_messages_model_params_inputs(memory_logger):
 assert not memory_logger.pop()
Expand Down

2 changes: 2 additions & 0 deletions
py/src/braintrust/integrations/anthropic/tracing.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -38,6 +38,8 @@ def accumulate_event(event=None, current_snapshot=None, **kwargs):
 "tools",
 "stream",
 "thinking",
 "output_config",
 "output_format",
)


Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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 Merged

Abhijeet Prasad (AbhiPrasad)
merged 1 commit into

from

Apr 9, 2026
 Merged


fix(anthropic): capture structured output metadata
#238
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110 changes: 110 additions & 0 deletions
...nthropic/cassettes/test_anthropic_messages_create_tracks_structured_outputs_metadata.yaml

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,110 @@
interactions:
- request:
 body: '{"max_tokens":128,"messages":[{"role":"user","content":"Return a JSON object
 with answer=2 and label=\"ok\"."}],"model":"claude-haiku-4-5","output_config":{"format":{"type":"json_schema","schema":{"type":"object","properties":{"answer":{"type":"integer"},"label":{"type":"string"}},"required":["answer","label"],"additionalProperties":false}}}}'
 headers:
 Accept:
 - application/json
 Accept-Encoding:
 - gzip, deflate, zstd
 Connection:
 - keep-alive
 Content-Length:
 - '344'
 Content-Type:
 - application/json
 Host:
 - api.anthropic.com
 User-Agent:
 - Anthropic/Python 0.84.0
 X-Stainless-Arch:
 - arm64
 X-Stainless-Async:
 - 'false'
 X-Stainless-Lang:
 - python
 X-Stainless-OS:
 - MacOS
 X-Stainless-Package-Version:
 - 0.84.0
 X-Stainless-Runtime:
 - CPython
 X-Stainless-Runtime-Version:
 - 3.13.3
 anthropic-version:
 - '2023-06-01'
 x-stainless-read-timeout:
 - '600'
 x-stainless-retry-count:
 - '0'
 x-stainless-timeout:
 - '600'
 method: POST
 uri: https://api.anthropic.com/v1/messages
 response:
 body:
 string: '{"model":"claude-haiku-4-5-20251001","id":"msg_01NTFSpgrJwP5QJXAfN7unNz","type":"message","role":"assistant","content":[{"type":"text","text":"{\"answer\":2,\"label\":\"ok\"}"}],"stop_reason":"end_turn","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":183,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":0},"output_tokens":12,"service_tier":"standard","inference_geo":"not_available"}}'
 headers:
 CF-RAY:
 - 9e9a4ef71fa0ac9f-YYZ
 Connection:
 - keep-alive
 Content-Security-Policy:
 - default-src 'none'; frame-ancestors 'none'
 Content-Type:
 - application/json
 Date:
 - Thu, 09 Apr 2026 14:47:44 GMT
 Server:
 - cloudflare
 Transfer-Encoding:
 - chunked
 X-Robots-Tag:
 - none
 anthropic-organization-id:
 - 27796668-7351-40ac-acc4-024aee8995a5
 anthropic-ratelimit-input-tokens-limit:
 - '4000000'
 anthropic-ratelimit-input-tokens-remaining:
 - '4000000'
 anthropic-ratelimit-input-tokens-reset:
 - '2026-04-09T14:47:44Z'
 anthropic-ratelimit-output-tokens-limit:
 - '800000'
 anthropic-ratelimit-output-tokens-remaining:
 - '800000'
 anthropic-ratelimit-output-tokens-reset:
 - '2026-04-09T14:47:44Z'
 anthropic-ratelimit-requests-limit:
 - '20000'
 anthropic-ratelimit-requests-remaining:
 - '19999'
 anthropic-ratelimit-requests-reset:
 - '2026-04-09T14:47:42Z'
 anthropic-ratelimit-tokens-limit:
 - '4800000'
 anthropic-ratelimit-tokens-remaining:
 - '4800000'
 anthropic-ratelimit-tokens-reset:
 - '2026-04-09T14:47:44Z'
 cf-cache-status:
 - DYNAMIC
 content-length:
 - '489'
 request-id:
 - req_011CZtP23rjNiGgHoNNfnj19
 server-timing:
 - x-originResponse;dur=3015
 set-cookie:
 - _cfuvid=Xtp25DVpHeIv9LXJ.bhbiwy2F5SYgJhWmQTVVFnyFQc-1775746061.9335136-1.0.1.1-mZBT5kq5Nw9Z32eTRtm5Pd7JQcZE432fC59pw5mr5cI;
 HttpOnly; SameSite=None; Secure; Path=/; Domain=api.anthropic.com
 strict-transport-security:
 - max-age=31536000; includeSubDomains; preload
 vary:
 - Accept-Encoding
 x-envoy-upstream-service-time:
 - '3012'
 status:
 code: 200
 message: OK
version: 1

101 changes: 100 additions & 1 deletion
py/src/braintrust/integrations/anthropic/test_anthropic.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -2,6 +2,8 @@
Tests to ensure we reliably wrap the Anthropic API.
"""

import inspect
import json
import time
import unittest.mock
from pathlib import Path
Expand All@@ -12,13 +14,27 @@
from braintrust import Attachment, logger
from braintrust.integrations.anthropic import AnthropicIntegration, wrap_anthropic
from braintrust.integrations.anthropic._utils import extract_anthropic_usage
from braintrust.integrations.anthropic.tracing import _get_input_from_kwargs, _log_message_to_span
from braintrust.integrations.anthropic.tracing import (
 _get_input_from_kwargs,
 _get_metadata_from_kwargs,
 _log_message_to_span,
)
from braintrust.test_helpers import init_test_logger


PROJECT_NAME = "test-anthropic-app"
MODEL = "claude-3-haiku-20240307" # use the cheapest model since answers dont matter
MULTIMODAL_MODEL = "claude-haiku-4-5-20251001"
STRUCTURED_OUTPUT_MODEL = "claude-haiku-4-5"
STRUCTURED_OUTPUT_SCHEMA = {
 "type": "object",
 "properties": {
 "answer": {"type": "integer"},
 "label": {"type": "string"},
 },
 "required": ["answer", "label"],
 "additionalProperties": False,
}
PNG_BASE64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg=="
PDF_BASE64 = "JVBERi0xLjAKMSAwIG9iago8PC9UeXBlL0NhdGFsb2cvUGFnZXMgMiAwIFI+PmVuZG9iagoyIDAgb2JqCjw8L1R5cGUvUGFnZXMvS2lkc1szIDAgUl0vQ291bnQgMT4+ZW5kb2JqCjMgMCBvYmoKPDwvVHlwZS9QYWdlL01lZGlhQm94WzAgMCA2MTIgNzkyXT4+ZW5kb2JqCnhyZWYKMCA0CjAwMDAwMDAwMDAgNjU1MzUgZg0KMDAwMDAwMDAxMCAwMDAwMCBuDQowMDAwMDAwMDUzIDAwMDAwIG4NCjAwMDAwMDAxMDIgMDAwMDAgbg0KdHJhaWxlcgo8PC9TaXplIDQvUm9vdCAxIDAgUj4+CnN0YXJ0eHJlZgoxNDkKJUVPRg=="

Expand All@@ -36,6 +52,29 @@ def _get_async_client():
 return anthropic.AsyncAnthropic()


def _get_supported_structured_output_param():
 parameter_names = inspect.signature(_get_client().messages.create).parameters
 if "output_config" in parameter_names:
 return (
 "output_config",
 {
 "format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 }
 },
 )
 if "output_format" in parameter_names:
 return (
 "output_format",
 {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 },
 )
 pytest.skip("Installed anthropic SDK does not support structured outputs parameters")


@pytest.fixture
def memory_logger():
 init_test_logger(PROJECT_NAME)
Expand DownExpand Up@@ -94,6 +133,39 @@ def test_get_input_from_kwargs_converts_multimodal_base64_blocks_to_attachments(
 assert PDF_BASE64 not in serialized


def test_get_metadata_from_kwargs_includes_structured_output_params():
 metadata = _get_metadata_from_kwargs(
 {
 "model": MODEL,
 "output_config": {
 "format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 }
 },
 "output_format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 },
 }
 )

 assert metadata == {
 "provider": "anthropic",
 "model": MODEL,
 "output_config": {
 "format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 }
 },
 "output_format": {
 "type": "json_schema",
 "schema": STRUCTURED_OUTPUT_SCHEMA,
 },
 }


def test_log_message_to_span_includes_stop_reason_and_stop_sequence():
 span = unittest.mock.MagicMock()
 message = SimpleNamespace(
Expand DownExpand Up@@ -333,6 +405,33 @@ def test_anthropic_messages_create_stream_true(memory_logger):
 assert "12" in span["output"]["content"][0]["text"]


@pytest.mark.vcr
def test_anthropic_messages_create_tracks_structured_outputs_metadata(memory_logger):
 assert not memory_logger.pop()

 structured_output_param_name, structured_output_param_value = _get_supported_structured_output_param()
 client = wrap_anthropic(_get_client())
 response = client.messages.create(
 model=STRUCTURED_OUTPUT_MODEL,
 max_tokens=128,
 messages=[
 {
 "role": "user",
 "content": 'Return a JSON object with answer=2 and label="ok".',
 }
 ],
 **{structured_output_param_name: structured_output_param_value},
 )

 assert json.loads(response.content[0].text) == {"answer": 2, "label": "ok"}

 spans = memory_logger.pop()
 assert len(spans) == 1
 span = spans[0]
 assert span["metadata"]["model"] == STRUCTURED_OUTPUT_MODEL
 assert span["metadata"][structured_output_param_name] == structured_output_param_value


@pytest.mark.vcr
def test_anthropic_messages_model_params_inputs(memory_logger):
 assert not memory_logger.pop()
Expand Down

2 changes: 2 additions & 0 deletions
py/src/braintrust/integrations/anthropic/tracing.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -38,6 +38,8 @@ def accumulate_event(event=None, current_snapshot=None, **kwargs):
 "tools",
 "stream",
 "thinking",
 "output_config",
 "output_format",
)


Expand Down
Loading