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docs: feat(fai): let test/eval traffic opt out of Ask Fern analytics (s… #6993

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14 changes: 14 additions & 0 deletions fern/products/docs/pages/ai/mcp-server.mdx
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Expand Up @@ -94,6 +94,20 @@ For Cursor, VS Code, and other clients, add `FERN_TOKEN: <jwt>` to the `headers`
JWTs expire. Re-run the token exchange when the token lapses. There is no automatic refresh mechanism in the MCP transport.
</Note>

## Exclude test and eval traffic from analytics

By default, every request through the MCP server is recorded as a conversation in the [Ask Fern analytics dashboard](/learn/docs/ai-features/ask-fern/overview). Automated tests or evals that call the server are recorded alongside real user queries, which can skew the data.

To prevent a request from being recorded, include the header `x-fern-skip-save-query: true` (or `x-fern-skip-save-query: 1`) on the MCP HTTP request. The request is still answered normally and still consumes AI credits — only the analytics recording is skipped.

@github-actions github-actions Bot Sep 17, 2026

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📝 [vale] <Microsoft.Uppercase> reported by reviewdog 🐶
Don't use all uppercase for emphasis.


In Claude Code, pass the header with `--header`:

```bash
claude mcp add --transport http \
--header "x-fern-skip-save-query: true" \
fern_mcp_docs.example.com https://docs.example.com/_mcp/server
```

## Disable the MCP server

To turn the server off entirely, set `mcp` to `false` in your [`page-actions` configuration](/learn/docs/configuration/site-level-settings#page-actionsoptions.mcp):
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