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Merge main into v4 - #2722
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Merge main into v4#2722
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- Add automatic tracing for FastMCP 3.35+ and 4.x servers, including
stateless HTTP sessions.
- Record tool calls, resource reads, prompts, notifications, and errors
in Braintrust.
Use `integrations.fastmcp` to control tracing and content capture
separately from the MCP integration.
- Add `wrapFastMCP()` for manual setup:
```ts
import { wrapFastMCP } from "braintrust";
import * as fastmcp from "fastmcp";
const { FastMCP } = wrapFastMCP(fastmcp); // Add tracing to FastMCP
sessions.
```
With this we should be in a great place for supporting the new https://cursor.com/blog/agent-sdk > 🤖 **This text was AI-generated.** Fix matching for minified ESM/CommonJS builds while preserving automatic/manual tracing parity. Capture nested tools, reported status/errors, cancellation, truncation flags, and request IDs. Report cache-inclusive prompt usage without double-counting. Before: ```text Cursor Agent [task] |-- tool: shell [tool] `-- tool: task [tool] `-- Agent: task [task] (nested tool calls omitted) ``` After: ```text Cursor Agent [task] |-- shell [tool] `-- task [tool] `-- Cursor Subagent [task] `-- read [tool] ``` Example for SDK-reported task steps; available detail depends on the SDK.
Co-authored-by: lforst <8118419+lforst@users.noreply.github.com>
## Summary Points links at the old docs domain (`www.braintrust.dev/docs`, `braintrust.dev/docs`, `braintrustdata.com/docs`) to `docs.braintrust.dev`. The old links still redirect since the docs cutover, so this is cleanup. Where a page has moved, the link goes to its current path instead of through a redirect chain. Includes `DOCS_HOMEPAGE` in `scripts/release/_shared.mjs` and the matching `homepage` in each `package.json`. The broken `guides/temporal` link in the Temporal example README now goes to the Temporal integration page. Not changed: generated types (they pick up new links on the next regeneration from the main repo) and CHANGELOGs. ## Testing - Every new URL returns 200 from `docs.braintrust.dev` with no redirect. SDK reference links use the `/versions/latest` alias on purpose. - `node scripts/release/validate-publishable-packages.mjs` passes, which checks that each `homepage` matches `DOCS_HOMEPAGE`. Refs: [DOC-2479](https://linear.app/braintrustdata/issue/DOC-2479/update-links-to-the-old-docs-domain-in-the-sdk-and-cli-repos) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-authored-by: jseldess <15893490+jseldess@users.noreply.github.com> Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
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Abhijeet Prasad (AbhiPrasad)
approved these changes
Nov 2, 2026
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