mirror of
https://github.com/PrefectHQ/fastmcp.git
synced 2026-08-09 15:19:10 +02:00
Add release notes for v3.1.0, v3.1.1, and v2.14.6 (#3659)
This commit is contained in:
Jeremiah Lowin
GitHub
parent
2a2f4c8e4d
commit
c63be5d178
4 changed files with 151 additions and 0 deletions
|
|
@ -5,6 +5,86 @@ rss: true
|
|||
tag: NEW
|
||||
---
|
||||
|
||||
<Update label="v3.1.1" description="2026-03-14">
|
||||
|
||||
**[v3.1.1: 'Tis But a Patch](https://github.com/PrefectHQ/fastmcp/releases/tag/v3.1.1)**
|
||||
|
||||
Pins `pydantic-monty<0.0.8` to fix a breaking change in Monty that affects code mode. Monty 0.0.8 removed the `external_functions` constructor parameter, causing `MontySandboxProvider` to fail. This patch caps the version so existing installs work correctly.
|
||||
|
||||
### Fixes 🐞
|
||||
* Pin pydantic-monty<0.0.8 to fix code mode by [@jlowin](https://github.com/jlowin) in [#3497](https://github.com/PrefectHQ/fastmcp/pull/3497)
|
||||
|
||||
**Full Changelog**: [v3.1.0...v3.1.1](https://github.com/PrefectHQ/fastmcp/compare/v3.1.0...v3.1.1)
|
||||
|
||||
</Update>
|
||||
|
||||
<Update label="v3.1.0" description="2026-03-03">
|
||||
|
||||
**[v3.1.0: Code to Joy](https://github.com/PrefectHQ/fastmcp/releases/tag/v3.1.0)**
|
||||
|
||||
FastMCP 3.1 is the Code Mode release. The 3.0 architecture introduced providers and transforms as the extensibility layer — 3.1 puts that architecture to work, shipping the most requested capability since launch: servers that can find and execute code on behalf of agents, without requiring clients to know what tools exist.
|
||||
|
||||
### New Features 🎉
|
||||
* feat: Search transforms for tool discovery by [@jlowin](https://github.com/jlowin) in [#3154](https://github.com/PrefectHQ/fastmcp/pull/3154)
|
||||
* Add experimental CodeMode transform by [@aaazzam](https://github.com/aaazzam) in [#3297](https://github.com/PrefectHQ/fastmcp/pull/3297)
|
||||
* Add Prefab Apps integration for MCP tool UIs by [@jlowin](https://github.com/jlowin) in [#3316](https://github.com/PrefectHQ/fastmcp/pull/3316)
|
||||
### Enhancements 🔧
|
||||
* Lazy-load heavy imports to reduce import time by [@jlowin](https://github.com/jlowin) in [#3295](https://github.com/PrefectHQ/fastmcp/pull/3295)
|
||||
* Add http_client parameter to all token verifiers for connection pooling by [@jlowin](https://github.com/jlowin) in [#3300](https://github.com/PrefectHQ/fastmcp/pull/3300)
|
||||
* Add in-memory caching for token introspection results by [@jlowin](https://github.com/jlowin) in [#3298](https://github.com/PrefectHQ/fastmcp/pull/3298)
|
||||
* Add SessionStart hook to install gh CLI in cloud sessions by [@jlowin](https://github.com/jlowin) in [#3308](https://github.com/PrefectHQ/fastmcp/pull/3308)
|
||||
* Fix ty 0.0.19 type errors by [@jlowin](https://github.com/jlowin) in [#3310](https://github.com/PrefectHQ/fastmcp/pull/3310)
|
||||
* Code Mode: Add resource limits to MontySandboxProvider by [@jlowin](https://github.com/jlowin) in [#3326](https://github.com/PrefectHQ/fastmcp/pull/3326)
|
||||
* Accept transforms as FastMCP init kwarg by [@jlowin](https://github.com/jlowin) in [#3324](https://github.com/PrefectHQ/fastmcp/pull/3324)
|
||||
* Split large test files to comply with loq line limit by [@jlowin](https://github.com/jlowin) in [#3328](https://github.com/PrefectHQ/fastmcp/pull/3328)
|
||||
* Add -m/--module flag to `fastmcp run` and `dev inspector` by [@dgenio](https://github.com/dgenio) in [#3331](https://github.com/PrefectHQ/fastmcp/pull/3331)
|
||||
* Add search_result_serializer hook and serialize_tools_for_output_markdown by [@MagnusS0](https://github.com/MagnusS0) in [#3337](https://github.com/PrefectHQ/fastmcp/pull/3337)
|
||||
* Add MultiAuth for composing multiple token verification sources by [@jlowin](https://github.com/jlowin) in [#3335](https://github.com/PrefectHQ/fastmcp/pull/3335)
|
||||
* Adds PropelAuth as an AuthProvider by [@andrew-propelauth](https://github.com/andrew-propelauth) in [#3358](https://github.com/PrefectHQ/fastmcp/pull/3358)
|
||||
* Replace vendored DI with uncalled-for by [@chrisguidry](https://github.com/chrisguidry) in [#3301](https://github.com/PrefectHQ/fastmcp/pull/3301)
|
||||
* Decompose CodeMode into composable discovery tools by [@jlowin](https://github.com/jlowin) in [#3354](https://github.com/PrefectHQ/fastmcp/pull/3354)
|
||||
* feat(contrib): auto-sync MCPMixin decorators with from_function signatures by [@AnkeshThakur](https://github.com/AnkeshThakur) in [#3323](https://github.com/PrefectHQ/fastmcp/pull/3323)
|
||||
* Add Google GenAI Sampling Handler by [@strawgate](https://github.com/strawgate) in [#2977](https://github.com/PrefectHQ/fastmcp/pull/2977)
|
||||
* Add ListTools, search limit, and catalog size annotation to CodeMode by [@jlowin](https://github.com/jlowin) in [#3359](https://github.com/PrefectHQ/fastmcp/pull/3359)
|
||||
* Allow configuring FastMCP transport setting in the same way as other configuration by [@jvdmr](https://github.com/jvdmr) in [#1796](https://github.com/PrefectHQ/fastmcp/pull/1796)
|
||||
* Add include_unversioned option to VersionFilter by [@yangbaechu](https://github.com/yangbaechu) in [#3349](https://github.com/PrefectHQ/fastmcp/pull/3349)
|
||||
### Fixes 🐞
|
||||
* Fix docs banner pushing nav down by [@jlowin](https://github.com/jlowin) in [#3282](https://github.com/PrefectHQ/fastmcp/pull/3282)
|
||||
* fix: Replace hardcoded TTL with DEFAULT_TTL_MS - issue #3279 by [@cedric57](https://github.com/cedric57) in [#3280](https://github.com/PrefectHQ/fastmcp/pull/3280)
|
||||
* fix: stop suppressing server stderr in fastmcp call by [@jlowin](https://github.com/jlowin) in [#3283](https://github.com/PrefectHQ/fastmcp/pull/3283)
|
||||
* fix: skip max_completion_tokens when maxTokens is None by [@eon01](https://github.com/eon01) in [#3284](https://github.com/PrefectHQ/fastmcp/pull/3284)
|
||||
* OpenAPI: rewrite $ref under propertyNames and patternProperties in _replace_ref_with_defs; add regression test for dict[StrEnum, Model] by [@manojPal23234](https://github.com/manojPal23234) in [#3306](https://github.com/PrefectHQ/fastmcp/pull/3306)
|
||||
* Remove stale add_resource() key parameter from docs by [@jlowin](https://github.com/jlowin) in [#3309](https://github.com/PrefectHQ/fastmcp/pull/3309)
|
||||
* Handle AuthorizationError as exclusion in AuthMiddleware list hooks by [@yangbaechu](https://github.com/yangbaechu) in [#3338](https://github.com/PrefectHQ/fastmcp/pull/3338)
|
||||
* Fix flaky OpenAPI performance test threshold by [@jlowin](https://github.com/jlowin) in [#3355](https://github.com/PrefectHQ/fastmcp/pull/3355)
|
||||
* Fix flaky SSE timeout test by [@jlowin](https://github.com/jlowin) in [#3343](https://github.com/PrefectHQ/fastmcp/pull/3343)
|
||||
* Remove system role references from docs by [@jlowin](https://github.com/jlowin) in [#3356](https://github.com/PrefectHQ/fastmcp/pull/3356)
|
||||
* Fix session persistence across tool calls in multi-server MCPConfigTransport by [@jer805](https://github.com/jer805) in [#3330](https://github.com/PrefectHQ/fastmcp/pull/3330)
|
||||
### Docs 📚
|
||||
* Add v3.0.2 release notes by [@jlowin](https://github.com/jlowin) in [#3276](https://github.com/PrefectHQ/fastmcp/pull/3276)
|
||||
* Fix "FastMCP Constructor Parameters" in documentation server.mdx (Remove old parameters & Add new parameter) by [@wangyy04](https://github.com/wangyy04) in [#3317](https://github.com/PrefectHQ/fastmcp/pull/3317)
|
||||
* Fix stale docs: tag filtering API and missing output_schema param by [@jlowin](https://github.com/jlowin) in [#3322](https://github.com/PrefectHQ/fastmcp/pull/3322)
|
||||
* Narrate search example clients by [@jlowin](https://github.com/jlowin) in [#3321](https://github.com/PrefectHQ/fastmcp/pull/3321)
|
||||
* Code Mode: Document resource limits and fix docs formatting by [@jlowin](https://github.com/jlowin) in [#3327](https://github.com/PrefectHQ/fastmcp/pull/3327)
|
||||
* Add reverse proxy (nginx) section to HTTP deployment docs by [@dgenio](https://github.com/dgenio) in [#3344](https://github.com/PrefectHQ/fastmcp/pull/3344)
|
||||
* Restructure docs navigation: CLI section, Composition, More by [@jlowin](https://github.com/jlowin) in [#3361](https://github.com/PrefectHQ/fastmcp/pull/3361)
|
||||
### Other Changes 🦾
|
||||
* Don't advertise sampling.tools capability by default by [@jlowin](https://github.com/jlowin) in [#3334](https://github.com/PrefectHQ/fastmcp/pull/3334)
|
||||
|
||||
## New Contributors
|
||||
* @cedric57 made their first contribution in [#3280](https://github.com/PrefectHQ/fastmcp/pull/3280)
|
||||
* @eon01 made their first contribution in [#3284](https://github.com/PrefectHQ/fastmcp/pull/3284)
|
||||
* @manojPal23234 made their first contribution in [#3306](https://github.com/PrefectHQ/fastmcp/pull/3306)
|
||||
* @wangyy04 made their first contribution in [#3317](https://github.com/PrefectHQ/fastmcp/pull/3317)
|
||||
* @yangbaechu made their first contribution in [#3338](https://github.com/PrefectHQ/fastmcp/pull/3338)
|
||||
* @andrew-propelauth made their first contribution in [#3358](https://github.com/PrefectHQ/fastmcp/pull/3358)
|
||||
* @jer805 made their first contribution in [#3330](https://github.com/PrefectHQ/fastmcp/pull/3330)
|
||||
* @jvdmr made their first contribution in [#1796](https://github.com/PrefectHQ/fastmcp/pull/1796)
|
||||
|
||||
**Full Changelog**: [v3.0.2...v3.1.0](https://github.com/PrefectHQ/fastmcp/compare/v3.0.2...v3.1.0)
|
||||
|
||||
</Update>
|
||||
|
||||
<Update label="v3.0.2" description="2026-02-22">
|
||||
|
||||
**[v3.0.2: Threecovery Mode II](https://github.com/PrefectHQ/fastmcp/releases/tag/v3.0.2)**
|
||||
|
|
@ -663,6 +743,21 @@ Breaking changes are minimal: for most servers, updating the import statement is
|
|||
|
||||
</Update>
|
||||
|
||||
<Update label="v2.14.6" description="2026-03-27">
|
||||
|
||||
**[v2.14.6: $Ref Dead Redemption](https://github.com/PrefectHQ/fastmcp/releases/tag/v2.14.6)**
|
||||
|
||||
v2.14.4 backported `dereference_refs()` but never wired it into the tool schema pipeline — `$ref` and `$defs` were still sent to MCP clients. Now fixed: `compress_schema()` dereferences at both tool schema creation sites, so schemas are fully inlined before reaching clients.
|
||||
|
||||
### Fixes 🐞
|
||||
* Updated deprecation URL for V2 by [@SrzStephen](https://github.com/SrzStephen) in [#3109](https://github.com/PrefectHQ/fastmcp/pull/3109)
|
||||
* Use MemoryStore for OAuth proxy tests by [@SrzStephen](https://github.com/SrzStephen) in [#3111](https://github.com/PrefectHQ/fastmcp/pull/3111)
|
||||
* fix: wire up dereference_refs() in tool schema pipeline by [@jlowin](https://github.com/jlowin) in [#3170](https://github.com/PrefectHQ/fastmcp/pull/3170)
|
||||
|
||||
**Full Changelog**: [v2.14.5...v2.14.6](https://github.com/PrefectHQ/fastmcp/compare/v2.14.5...v2.14.6)
|
||||
|
||||
</Update>
|
||||
|
||||
<Update label="v2.14.5" description="2026-02-03">
|
||||
|
||||
**[v2.14.5: Sealed Docket](https://github.com/PrefectHQ/fastmcp/releases/tag/v2.14.5)**
|
||||
|
|
|
|||
|
|
@ -5,6 +5,26 @@ icon: "sparkles"
|
|||
tag: NEW
|
||||
---
|
||||
|
||||
<Update label="FastMCP 3.1.1" description="March 14, 2026" tags={["Releases"]}>
|
||||
<Card
|
||||
title="FastMCP v3.1.1: 'Tis But a Patch"
|
||||
href="https://github.com/PrefectHQ/fastmcp/releases/tag/v3.1.1"
|
||||
cta="Read the release notes"
|
||||
>
|
||||
Pins `pydantic-monty<0.0.8` to fix a breaking change in Monty that affects code mode.
|
||||
</Card>
|
||||
</Update>
|
||||
|
||||
<Update label="FastMCP 3.1.0" description="March 3, 2026" tags={["Releases"]}>
|
||||
<Card
|
||||
title="FastMCP v3.1.0: Code to Joy"
|
||||
href="https://github.com/PrefectHQ/fastmcp/releases/tag/v3.1.0"
|
||||
cta="Read the release notes"
|
||||
>
|
||||
The Code Mode release. Instead of loading the entire tool catalog into context, `CodeMode` gives LLMs meta-tools: search for relevant tools on demand, inspect their schemas, then write Python that chains `call_tool()` calls in a sandbox. Also ships search transforms, early Prefab Apps integration, `MultiAuth` for composing multiple token verification sources, and PropelAuth support.
|
||||
</Card>
|
||||
</Update>
|
||||
|
||||
<Update label="FastMCP 3.0.2" description="February 22, 2026" tags={["Releases"]}>
|
||||
<Card
|
||||
title="FastMCP v3.0.2: Threecovery Mode II"
|
||||
|
|
@ -114,6 +134,16 @@ FastMCP 3.0 rebuilds the framework around three primitives: components, provider
|
|||
</Card>
|
||||
</Update>
|
||||
|
||||
<Update label="FastMCP 2.14.6" description="March 27, 2026" tags={["Releases"]}>
|
||||
<Card
|
||||
title="FastMCP 2.14.6: $Ref Dead Redemption"
|
||||
href="https://github.com/PrefectHQ/fastmcp/releases/tag/v2.14.6"
|
||||
cta="Read the release notes"
|
||||
>
|
||||
v2.14.4 backported `dereference_refs()` but never wired it into the tool schema pipeline — `$ref` and `$defs` were still sent to MCP clients. Now fixed: schemas are fully inlined before reaching clients.
|
||||
</Card>
|
||||
</Update>
|
||||
|
||||
<Update label="FastMCP 2.14.5" description="February 3, 2026" tags={["Releases"]}>
|
||||
<Card
|
||||
title="FastMCP 2.14.5: Sealed Docket"
|
||||
|
|
|
|||
|
|
@ -4,6 +4,22 @@ icon: "list-check"
|
|||
rss: true
|
||||
---
|
||||
|
||||
<Update label="v2.14.6" description="2026-03-27">
|
||||
|
||||
**[v2.14.6: $Ref Dead Redemption](https://github.com/PrefectHQ/fastmcp/releases/tag/v2.14.6)**
|
||||
|
||||
v2.14.4 backported `dereference_refs()` but never wired it into the tool schema pipeline — `$ref` and `$defs` were still sent to MCP clients. Now fixed: `compress_schema()` dereferences at both tool schema creation sites, so schemas are fully inlined before reaching clients.
|
||||
|
||||
## What's Changed
|
||||
### Fixes 🐞
|
||||
* Updated deprecation URL for V2 by [@SrzStephen](https://github.com/SrzStephen) in [#3109](https://github.com/PrefectHQ/fastmcp/pull/3109)
|
||||
* Use MemoryStore for OAuth proxy tests by [@SrzStephen](https://github.com/SrzStephen) in [#3111](https://github.com/PrefectHQ/fastmcp/pull/3111)
|
||||
* fix: wire up dereference_refs() in tool schema pipeline by [@jlowin](https://github.com/jlowin) in [#3170](https://github.com/PrefectHQ/fastmcp/pull/3170)
|
||||
|
||||
**Full Changelog**: [v2.14.5...v2.14.6](https://github.com/PrefectHQ/fastmcp/compare/v2.14.5...v2.14.6)
|
||||
|
||||
</Update>
|
||||
|
||||
<Update label="v2.14.5" description="2026-02-03">
|
||||
|
||||
**[v2.14.5: Sealed Docket](https://github.com/PrefectHQ/fastmcp/releases/tag/v2.14.5)**
|
||||
|
|
|
|||
|
|
@ -5,6 +5,16 @@ icon: "sparkles"
|
|||
tag: NEW
|
||||
---
|
||||
|
||||
<Update label="FastMCP 2.14.6" description="March 27, 2026" tags={["Releases"]}>
|
||||
<Card
|
||||
title="FastMCP 2.14.6: $Ref Dead Redemption"
|
||||
href="https://github.com/PrefectHQ/fastmcp/releases/tag/v2.14.6"
|
||||
cta="Read the release notes"
|
||||
>
|
||||
v2.14.4 backported `dereference_refs()` but never wired it into the tool schema pipeline — `$ref` and `$defs` were still sent to MCP clients. Now fixed: schemas are fully inlined before reaching clients.
|
||||
</Card>
|
||||
</Update>
|
||||
|
||||
<Update label="FastMCP 2.14.5" description="February 3, 2026" tags={["Releases"]}>
|
||||
<Card
|
||||
title="FastMCP 2.14.5: Sealed Docket"
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue