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Remove OpenAPI timeout parameter, make client optional, surface timeout errors (#3067)

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* Remove OpenAPI timeout param, make client optional, surface timeout errors

* Close auto-created httpx client via provider lifespan
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Jeremiah Lowin 2026-02-03 21:08:09 -05:00 • committed by GitHub
commit 5fd41b2e15
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7 changed files with 102 additions and 43 deletions
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docs/development/upgrade-guide.mdx
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@ -95,6 +95,19 @@ value = await ctx.get_state("key")
`FASTMCP_SHOW_CLI_BANNER` is now `FASTMCP_SHOW_SERVER_BANNER`.
#### OpenAPI `timeout` Parameter Removed
Configure timeout on the httpx client directly. The `client` parameter is now optional — when omitted, a default client is created from the spec's `servers` URL with a 30-second timeout.
```python
# Before
provider = OpenAPIProvider(spec, client, timeout=60)
# After
client = httpx.AsyncClient(base_url="https://api.example.com", timeout=60)
provider = OpenAPIProvider(spec, client)
```
#### Metadata Namespace Renamed
The FastMCP metadata namespace changed from `_fastmcp` to `fastmcp`, and metadata is now always included. The `include_fastmcp_meta` parameter has been removed from `FastMCP()` and `to_mcp_tool()`—remove any usage of this parameter.