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test(cloudflare): Add e2e test for MCPAgent with DurableObject instrumentation - #20601

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test(cloudflare): Add e2e test for MCPAgent with DurableObject instrumentation#20601
JPeer264 merged 2 commits into
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@JPeer264JPeer264 commented Apr 29, 2026

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closes#17598
closes JS-927

This test ensures that the Sentry SDK properly instruments MCPAgent (which extends DurableObject) from the Cloudflare agents package. It verifies that MCP tool call spans are correctly created and linked.

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JPeer264 requested a review from a teamApril 29, 2026 12:41
@JPeer264JPeer264 self-assigned this Apr 29, 2026
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JS-927 Add tests to ensure that cloudflare MCPAgent changes work with durable objects instrumentation

@JPeer264@claude
test(cloudflare): Add e2e test for MCPAgent with DurableObject instru…
0306960
…mentation
This test ensures that the Sentry SDK properly instruments MCPAgent
(which extends DurableObject) from the Cloudflare agents package.
It verifies that MCP tool call spans are correctly created and linked.
Ref: #17598
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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JPeer264force-pushed the jp/cloudflare-mcpagent-e2e-test branch from 413899a to 0306960CompareApril 29, 2026 12:43
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Comment threaddev-packages/e2e-tests/test-applications/cloudflare-mcp-agent/vitest.config.mts Outdated
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size-limit report 📦

PathSize% ChangeChange
@sentry/browser26.16 kB--
@sentry/browser - with treeshaking flags24.63 kB--
@sentry/browser (incl. Tracing)44.13 kB--
@sentry/browser (incl. Tracing + Span Streaming)46.34 kB--
@sentry/browser (incl. Tracing, Profiling)49.08 kB--
@sentry/browser (incl. Tracing, Replay)83.48 kB--
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags72.96 kB--
@sentry/browser (incl. Tracing, Replay with Canvas)88.15 kB--
@sentry/browser (incl. Tracing, Replay, Feedback)100.8 kB--
@sentry/browser (incl. Feedback)43.4 kB--
@sentry/browser (incl. sendFeedback)30.96 kB--
@sentry/browser (incl. FeedbackAsync)36.14 kB--
@sentry/browser (incl. Metrics)27.44 kB--
@sentry/browser (incl. Logs)27.59 kB--
@sentry/browser (incl. Metrics & Logs)28.28 kB--
@sentry/react27.9 kB--
@sentry/react (incl. Tracing)46.36 kB--
@sentry/vue31.03 kB--
@sentry/vue (incl. Tracing)45.96 kB--
@sentry/svelte26.18 kB--
CDN Bundle28.85 kB--
CDN Bundle (incl. Tracing)46.91 kB--
CDN Bundle (incl. Logs, Metrics)30.27 kB--
CDN Bundle (incl. Tracing, Logs, Metrics)48.03 kB--
CDN Bundle (incl. Replay, Logs, Metrics)69.35 kB--
CDN Bundle (incl. Tracing, Replay)84.07 kB--
CDN Bundle (incl. Tracing, Replay, Logs, Metrics)85.14 kB--
CDN Bundle (incl. Tracing, Replay, Feedback)89.86 kB--
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics)90.96 kB--
CDN Bundle - uncompressed84.55 kB--
CDN Bundle (incl. Tracing) - uncompressed140.16 kB--
CDN Bundle (incl. Logs, Metrics) - uncompressed88.75 kB--
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed143.62 kB--
CDN Bundle (incl. Replay, Logs, Metrics) - uncompressed212.71 kB--
CDN Bundle (incl. Tracing, Replay) - uncompressed257.96 kB--
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) - uncompressed261.41 kB--
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed271.66 kB--
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) - uncompressed275.1 kB--
@sentry/nextjs (client)48.85 kB--
@sentry/sveltekit (client)44.58 kB--
@sentry/node-core59.06 kB+0.02%+10 B 🔺
@sentry/node170.35 kB+0.01%+11 B 🔺
@sentry/node - without tracing96.92 kB+0.02%+10 B 🔺
@sentry/aws-serverless113.78 kB+0.03%+31 B 🔺
@sentry/cloudflare (withSentry) - minified164.96 kB--
@sentry/cloudflare (withSentry)417.1 kB--

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andreiborza
andreiborza approved these changes Apr 30, 2026
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Comment threaddev-packages/e2e-tests/test-applications/cloudflare-mcp-agent/vitest.config.mts Outdated
@JPeer264
JPeer264 merged commit 866958e into developApr 30, 2026
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JPeer264 deleted the jp/cloudflare-mcpagent-e2e-test branch April 30, 2026 10:36
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Add tests to ensure that cloudflare MCPAgent changes work with durable objects instrumentation

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