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feat: add type helpers for DurableAgent UI messages - #1302

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Summary

Adds type helper functions for DurableAgent UI messages to improve type safety and message validation when working with UI message types.

Changes

Agent Types (packages/ai/src/agent/durable-agent.ts)

  • Add type helper functions for DurableAgent UI messages
  • Improve type safety for message validation

Tests (packages/ai/src/agent/durable-agent-types.test.ts)

  • Add comprehensive test suite for UI message type helpers
  • Test type validation and message structure

Tests (packages/ai/src/agent/durable-agent.test.ts)

  • Update existing tests to use new type helpers

@nicoalbanese
nicoalbanese requested a review from a team as a code ownerMarch 9, 2026 11:48
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⚠️ No Changeset found

Latest commit: bf245d5

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

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VaguelySerious added a commit that referenced this pull request Mar 14, 2026
@VaguelySerious@claude
DurableAgent: type helpers, prepareStep on constructor, supportedUrls…
ffe2980
… fix, telemetry spans
- Add InferDurableAgentTools and InferDurableAgentUIMessage type helpers (#1302)
- Support prepareStep on DurableAgent constructor with stream-level override (#1303)
- Fix AI_DownloadError for image URLs by defaulting to no-op download (#1376)
- Add telemetry span support (ai.streamText.doStream, ai.toolCall) via optional @opentelemetry/api (#1296)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@VaguelySeriousVaguelySerious mentioned this pull request Mar 14, 2026
Merged
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feat: add type helpers for DurableAgent UI messages by nicoalbanese · Pull Request #1302 · vercel/workflow · GitHub
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feat: add type helpers for DurableAgent UI messages - #1302
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nicoalbanese wants to merge 2 commits into
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nicoalbanese:na/44395214
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feat: add type helpers for DurableAgent UI messages#1302
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Mar 9, 2026

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Summary
Adds type helper functions for DurableAgent UI messages to improve type safety and message validation when working with UI message types.
Changes
Agent Types (packages/ai/src/agent/durable-agent.ts)
  • Add type helper functions for DurableAgent UI messages
  • Improve type safety for message validation
Tests (packages/ai/src/agent/durable-agent-types.test.ts)
  • Add comprehensive test suite for UI message type helpers
  • Test type validation and message structure
Tests (packages/ai/src/agent/durable-agent.test.ts)
  • Update existing tests to use new type helpers
@nicoalbanese
nicoalbanese
requested a review
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as a code ownerMarch 9, 2026 11:48
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Mar 9, 2026•

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⚠️ No Changeset found
Latest commit: bf245d5
Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.
This PR includes no changesets
When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types
Click here to learn what changesets are, and how to add one.
Click here if you're a maintainer who wants to add a changeset to this PR
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@nicoalbanese is attempting to deploy a commit to the Vercel Labs Team on Vercel.
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VaguelySerious added a commit
that referenced
this pull request
Mar 14, 2026
@VaguelySerious@claude
DurableAgent: type helpers, prepareStep on constructor, supportedUrls…
ffe2980
… fix, telemetry spans
- Add InferDurableAgentTools and InferDurableAgentUIMessage type helpers (#1302)
- Support prepareStep on DurableAgent constructor with stream-level override (#1303)
- Fix AI_DownloadError for image URLs by defaulting to no-op download (#1376)
- Add telemetry span support (ai.streamText.doStream, ai.toolCall) via optional @opentelemetry/api (#1296)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@VaguelySeriousVaguelySerious
mentioned this pull request
Mar 14, 2026
 Merged

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feat: add type helpers for DurableAgent UI messages by nicoalbanese · Pull Request #1302 · vercel/workflow · GitHub
Skip to content
feat: add type helpers for DurableAgent UI messages - #1302
Closed
nicoalbanese wants to merge 2 commits into
vercel:mainfrom 
nicoalbanese:na/44395214
Closed
feat: add type helpers for DurableAgent UI messages#1302
nicoalbanese wants to merge 2 commits into
vercel:mainfrom 
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@nicoalbanese
@nicoalbanesenicoalbanese
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Summary
Adds type helper functions for DurableAgent UI messages to improve type safety and message validation when working with UI message types.
Changes
Agent Types (packages/ai/src/agent/durable-agent.ts)
  • Add type helper functions for DurableAgent UI messages
  • Improve type safety for message validation
Tests (packages/ai/src/agent/durable-agent-types.test.ts)
  • Add comprehensive test suite for UI message type helpers
  • Test type validation and message structure
Tests (packages/ai/src/agent/durable-agent.test.ts)
  • Update existing tests to use new type helpers
@nicoalbanese
nicoalbanese
requested a review
from a team
as a code ownerMarch 9, 2026 11:48
@changeset-bot
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Mar 9, 2026•

edited

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⚠️ No Changeset found
Latest commit: bf245d5
Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.
This PR includes no changesets
When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types
Click here to learn what changesets are, and how to add one.
Click here if you're a maintainer who wants to add a changeset to this PR
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@nicoalbanese is attempting to deploy a commit to the Vercel Labs Team on Vercel.
A member of the Team first needs to authorize it.
VaguelySerious added a commit
that referenced
this pull request
Mar 14, 2026
@VaguelySerious@claude
DurableAgent: type helpers, prepareStep on constructor, supportedUrls…
ffe2980
… fix, telemetry spans
- Add InferDurableAgentTools and InferDurableAgentUIMessage type helpers (#1302)
- Support prepareStep on DurableAgent constructor with stream-level override (#1303)
- Fix AI_DownloadError for image URLs by defaulting to no-op download (#1376)
- Add telemetry span support (ai.streamText.doStream, ai.toolCall) via optional @opentelemetry/api (#1296)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@VaguelySeriousVaguelySerious
mentioned this pull request
Mar 14, 2026
 Merged

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, 'i');
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try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
feat: add type helpers for DurableAgent UI messages by nicoalbanese · Pull Request #1302 · vercel/workflow · GitHub
Skip to content
feat: add type helpers for DurableAgent UI messages - #1302
Closed
nicoalbanese wants to merge 2 commits into
vercel:mainfrom 
nicoalbanese:na/44395214
Closed
feat: add type helpers for DurableAgent UI messages#1302
nicoalbanese wants to merge 2 commits into
vercel:mainfrom 
nicoalbanese:na/44395214
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@nicoalbanese
@nicoalbanesenicoalbanese
commented
Mar 9, 2026

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Summary
Adds type helper functions for DurableAgent UI messages to improve type safety and message validation when working with UI message types.
Changes
Agent Types (packages/ai/src/agent/durable-agent.ts)
  • Add type helper functions for DurableAgent UI messages
  • Improve type safety for message validation
Tests (packages/ai/src/agent/durable-agent-types.test.ts)
  • Add comprehensive test suite for UI message type helpers
  • Test type validation and message structure
Tests (packages/ai/src/agent/durable-agent.test.ts)
  • Update existing tests to use new type helpers
@nicoalbanese
nicoalbanese
requested a review
from a team
as a code ownerMarch 9, 2026 11:48
@changeset-bot
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Mar 9, 2026•

edited

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⚠️ No Changeset found
Latest commit: bf245d5
Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.
This PR includes no changesets
When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types
Click here to learn what changesets are, and how to add one.
Click here if you're a maintainer who wants to add a changeset to this PR
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@nicoalbanese is attempting to deploy a commit to the Vercel Labs Team on Vercel.
A member of the Team first needs to authorize it.
VaguelySerious added a commit
that referenced
this pull request
Mar 14, 2026
@VaguelySerious@claude
DurableAgent: type helpers, prepareStep on constructor, supportedUrls…
ffe2980
… fix, telemetry spans
- Add InferDurableAgentTools and InferDurableAgentUIMessage type helpers (#1302)
- Support prepareStep on DurableAgent constructor with stream-level override (#1303)
- Fix AI_DownloadError for image URLs by defaulting to no-op download (#1376)
- Add telemetry span support (ai.streamText.doStream, ai.toolCall) via optional @opentelemetry/api (#1296)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@VaguelySeriousVaguelySerious
mentioned this pull request
Mar 14, 2026
 Merged

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var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
feat: add type helpers for DurableAgent UI messages by nicoalbanese · Pull Request #1302 · vercel/workflow · GitHub
Skip to content
feat: add type helpers for DurableAgent UI messages - #1302
Closed
nicoalbanese wants to merge 2 commits into
vercel:mainfrom 
nicoalbanese:na/44395214
Closed
feat: add type helpers for DurableAgent UI messages#1302
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@nicoalbanese
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commented
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Summary
Adds type helper functions for DurableAgent UI messages to improve type safety and message validation when working with UI message types.
Changes
Agent Types (packages/ai/src/agent/durable-agent.ts)
  • Add type helper functions for DurableAgent UI messages
  • Improve type safety for message validation
Tests (packages/ai/src/agent/durable-agent-types.test.ts)
  • Add comprehensive test suite for UI message type helpers
  • Test type validation and message structure
Tests (packages/ai/src/agent/durable-agent.test.ts)
  • Update existing tests to use new type helpers
@nicoalbanese
nicoalbanese
requested a review
from a team
as a code ownerMarch 9, 2026 11:48
@changeset-bot
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Mar 9, 2026•

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⚠️ No Changeset found
Latest commit: bf245d5
Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.
This PR includes no changesets
When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types
Click here to learn what changesets are, and how to add one.
Click here if you're a maintainer who wants to add a changeset to this PR
@vercel
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Mar 9, 2026

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@nicoalbanese is attempting to deploy a commit to the Vercel Labs Team on Vercel.
A member of the Team first needs to authorize it.
VaguelySerious added a commit
that referenced
this pull request
Mar 14, 2026
@VaguelySerious@claude
DurableAgent: type helpers, prepareStep on constructor, supportedUrls…
ffe2980
… fix, telemetry spans
- Add InferDurableAgentTools and InferDurableAgentUIMessage type helpers (#1302)
- Support prepareStep on DurableAgent constructor with stream-level override (#1303)
- Fix AI_DownloadError for image URLs by defaulting to no-op download (#1376)
- Add telemetry span support (ai.streamText.doStream, ai.toolCall) via optional @opentelemetry/api (#1296)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@VaguelySeriousVaguelySerious
mentioned this pull request
Mar 14, 2026
 Merged

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, 'i');
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try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
feat: add type helpers for DurableAgent UI messages by nicoalbanese · Pull Request #1302 · vercel/workflow · GitHub
Skip to content
feat: add type helpers for DurableAgent UI messages - #1302
Closed
nicoalbanese wants to merge 2 commits into
vercel:mainfrom 
nicoalbanese:na/44395214
Closed
feat: add type helpers for DurableAgent UI messages#1302
nicoalbanese wants to merge 2 commits into
vercel:mainfrom 
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@nicoalbanese
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Summary
Adds type helper functions for DurableAgent UI messages to improve type safety and message validation when working with UI message types.
Changes
Agent Types (packages/ai/src/agent/durable-agent.ts)
  • Add type helper functions for DurableAgent UI messages
  • Improve type safety for message validation
Tests (packages/ai/src/agent/durable-agent-types.test.ts)
  • Add comprehensive test suite for UI message type helpers
  • Test type validation and message structure
Tests (packages/ai/src/agent/durable-agent.test.ts)
  • Update existing tests to use new type helpers
@nicoalbanese
nicoalbanese
requested a review
from a team
as a code ownerMarch 9, 2026 11:48
@changeset-bot
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commented
Mar 9, 2026•

edited

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⚠️ No Changeset found
Latest commit: bf245d5
Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.
This PR includes no changesets
When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types
Click here to learn what changesets are, and how to add one.
Click here if you're a maintainer who wants to add a changeset to this PR
@vercel
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Mar 9, 2026

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@nicoalbanese is attempting to deploy a commit to the Vercel Labs Team on Vercel.
A member of the Team first needs to authorize it.
VaguelySerious added a commit
that referenced
this pull request
Mar 14, 2026
@VaguelySerious@claude
DurableAgent: type helpers, prepareStep on constructor, supportedUrls…
ffe2980
… fix, telemetry spans
- Add InferDurableAgentTools and InferDurableAgentUIMessage type helpers (#1302)
- Support prepareStep on DurableAgent constructor with stream-level override (#1303)
- Fix AI_DownloadError for image URLs by defaulting to no-op download (#1376)
- Add telemetry span support (ai.streamText.doStream, ai.toolCall) via optional @opentelemetry/api (#1296)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@VaguelySeriousVaguelySerious
mentioned this pull request
Mar 14, 2026
 Merged

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feat: add type helpers for DurableAgent UI messages by nicoalbanese · Pull Request #1302 · vercel/workflow · GitHub
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feat: add type helpers for DurableAgent UI messages - #1302
Closed
nicoalbanese wants to merge 2 commits into
vercel:mainfrom 
nicoalbanese:na/44395214
Closed
feat: add type helpers for DurableAgent UI messages#1302
nicoalbanese wants to merge 2 commits into
vercel:mainfrom 
nicoalbanese:na/44395214
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@nicoalbanese
@nicoalbanesenicoalbanese
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Mar 9, 2026

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Summary
Adds type helper functions for DurableAgent UI messages to improve type safety and message validation when working with UI message types.
Changes
Agent Types (packages/ai/src/agent/durable-agent.ts)
  • Add type helper functions for DurableAgent UI messages
  • Improve type safety for message validation
Tests (packages/ai/src/agent/durable-agent-types.test.ts)
  • Add comprehensive test suite for UI message type helpers
  • Test type validation and message structure
Tests (packages/ai/src/agent/durable-agent.test.ts)
  • Update existing tests to use new type helpers
@nicoalbanese
nicoalbanese
requested a review
from a team
as a code ownerMarch 9, 2026 11:48
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Mar 9, 2026•

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⚠️ No Changeset found
Latest commit: bf245d5
Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.
This PR includes no changesets
When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types
Click here to learn what changesets are, and how to add one.
Click here if you're a maintainer who wants to add a changeset to this PR
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@nicoalbanese is attempting to deploy a commit to the Vercel Labs Team on Vercel.
A member of the Team first needs to authorize it.
VaguelySerious added a commit
that referenced
this pull request
Mar 14, 2026
@VaguelySerious@claude
DurableAgent: type helpers, prepareStep on constructor, supportedUrls…
ffe2980
… fix, telemetry spans
- Add InferDurableAgentTools and InferDurableAgentUIMessage type helpers (#1302)
- Support prepareStep on DurableAgent constructor with stream-level override (#1303)
- Fix AI_DownloadError for image URLs by defaulting to no-op download (#1376)
- Add telemetry span support (ai.streamText.doStream, ai.toolCall) via optional @opentelemetry/api (#1296)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@VaguelySeriousVaguelySerious
mentioned this pull request
Mar 14, 2026
 Merged

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feat: add type helpers for DurableAgent UI messages by nicoalbanese · Pull Request #1302 · vercel/workflow · GitHub
Skip to content
feat: add type helpers for DurableAgent UI messages - #1302
Closed
nicoalbanese wants to merge 2 commits into
vercel:mainfrom 
nicoalbanese:na/44395214
Closed
feat: add type helpers for DurableAgent UI messages#1302
nicoalbanese wants to merge 2 commits into
vercel:mainfrom 
nicoalbanese:na/44395214
Conversation
@nicoalbanese
@nicoalbanesenicoalbanese
commented
Mar 9, 2026

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Summary
Adds type helper functions for DurableAgent UI messages to improve type safety and message validation when working with UI message types.
Changes
Agent Types (packages/ai/src/agent/durable-agent.ts)
  • Add type helper functions for DurableAgent UI messages
  • Improve type safety for message validation
Tests (packages/ai/src/agent/durable-agent-types.test.ts)
  • Add comprehensive test suite for UI message type helpers
  • Test type validation and message structure
Tests (packages/ai/src/agent/durable-agent.test.ts)
  • Update existing tests to use new type helpers
@nicoalbanese
nicoalbanese
requested a review
from a team
as a code ownerMarch 9, 2026 11:48
@changeset-bot
changeset-botBot
commented
Mar 9, 2026•

edited

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⚠️ No Changeset found
Latest commit: bf245d5
Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.
This PR includes no changesets
When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types
Click here to learn what changesets are, and how to add one.
Click here if you're a maintainer who wants to add a changeset to this PR
@vercel
vercelBot
commented
Mar 9, 2026

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Contributor
@nicoalbanese is attempting to deploy a commit to the Vercel Labs Team on Vercel.
A member of the Team first needs to authorize it.
VaguelySerious added a commit
that referenced
this pull request
Mar 14, 2026
@VaguelySerious@claude
DurableAgent: type helpers, prepareStep on constructor, supportedUrls…
ffe2980
… fix, telemetry spans
- Add InferDurableAgentTools and InferDurableAgentUIMessage type helpers (#1302)
- Support prepareStep on DurableAgent constructor with stream-level override (#1303)
- Fix AI_DownloadError for image URLs by defaulting to no-op download (#1376)
- Add telemetry span support (ai.streamText.doStream, ai.toolCall) via optional @opentelemetry/api (#1296)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@VaguelySeriousVaguelySerious
mentioned this pull request
Mar 14, 2026
 Merged

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@nicoalbanese@VaguelySerious