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chore(deps): Bump fastmcp from 3.1.1 to 3.4.5 in /app - #21

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chore(deps): Bump fastmcp from 3.1.1 to 3.4.5 in /app#21
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Bumps fastmcp from 3.1.1 to 3.4.5.

Release notes

Sourced from fastmcp's releases.

v3.4.5: Key Change

FastMCP 3.4.5 collects five fixes for the 3.x line. The one that prompted it: a single Ed25519 key in a JWKS — which Rauthy, Ory Hydra, and some Keycloak configurations publish by default — made JWTVerifier reject every token, including ones correctly signed by supported keys in the same set.

What's Changed

Fixes 🐞

Docs 📚

New Contributors

Full Changelog: PrefectHQ/fastmcp@v3.4.4...v3.4.5

v3.4.4: Host in Translation

FastMCP 3.4.4 restores HTTP deployment compatibility after the 3.4.3 Host/Origin guard changed default behavior for existing ASGI, serverless, and reverse-proxy deployments. The guard implementation remains available for deployments that opt in with explicit trusted hosts and origins, while 3.x returns to accepting traffic that worked before the patch. This release also adds Hugging Face OAuth provider support, with docs and examples for public and private apps, PKCE, Dynamic Client Registration, and CIMD.

What's Changed

Enhancements ✨

Fixes 🐞

Docs 📚

New Contributors

Full Changelog: PrefectHQ/fastmcp@v3.4.3...v3.4.4

v3.4.3: The Fast and the Secure-ious

FastMCP 3.4.3 closes out a month of SSRF and OAuth hardening: NAT64, 6to4, Teredo, and ISATAP transition addresses can no longer smuggle private IPv4 targets past the SSRF allow-list, Streamable HTTP now validates Host and Origin before session handling to block DNS rebinding against localhost-bound servers, and OAuth redirect validation rejects unsafe schemes and unregistered DCR redirect URIs. Alongside the security work, this release also fixes proxy session teardown races, discriminator-tag handling in JSON schema conversion, and several smaller reliability issues.

What's Changed

Enhancements ✨

... (truncated)

Changelog

Sourced from fastmcp's changelog.


title: "Changelog" icon: "list-check" rss: true tag: NEW

v4.0.0b1: Fourgone Conclusion

FastMCP 4 makes stateful MCP applications work on the sessionless 2026-07-28 protocol while one deployment continues serving handshake-era clients. Tools can ask follow-up questions across requests, preserve authenticated user state, and move long-running work into background tasks without sticky sessions. Protocol extensions and enterprise identity become first-class surfaces, and most FastMCP 3 servers upgrade unchanged even though MCP Python SDK v2 rewrote the engine underneath them. Server-initiated sampling and roots are removed from the server API; the upgrade guide covers their replacements.

New Features 🎉

  • Migrate to MCP Python SDK v2 by @​jlowin in #4437
  • Teach fastmcp.Client the modern protocol: mode negotiation, MRTR driver, response cache by @​jlowin in #4450
  • Forward-port Hugging Face auth provider by @​jlowin in #4475
  • Add server-side identity assertion (SEP-990 ID-JAG) by @​jlowin in #4483
  • Add guard-mode multi-round-trip tools (SEP-2322) by @​jlowin in #4544
  • Add FastMCP-native server extension API (SEP-2133) by @​jlowin in #4602
  • Add stateless session state (UserSession / SessionId) by @​jlowin in #4604
  • Add background tasks via the io.modelcontextprotocol/tasks extension (SEP-2663) by @​jlowin in #4603

Breaking Changes ⚠️

Enhancements ✨

... (truncated)

Commits

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Bumps [fastmcp](https://github.com/PrefectHQ/fastmcp) from 3.1.1 to 3.4.5.
- [Release notes](https://github.com/PrefectHQ/fastmcp/releases)
- [Changelog](https://github.com/PrefectHQ/fastmcp/blob/main/docs/changelog.mdx)
- [Commits](PrefectHQ/fastmcp@v3.1.1...v3.4.5)

---
updated-dependencies:
- dependency-name: fastmcp
  dependency-version: 3.4.5
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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@dependabot dependabot Bot added dependencies Pull requests that update a dependency file python Pull requests that update python code labels Jul 29, 2026
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