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Author SHA1 Message Date
Jeremiah Lowin
4207802920
 		Reapply span attributes after creation to survive non-forwarding samplers 
Tracer.start_span builds the span from sampling_result.attributes, not
the attributes kwarg — a custom Sampler that returns
SamplingResult(RECORD_AND_SAMPLE) without forwarding attributes
silently drops everything FastMCP passed at creation time. Reapply the
same attributes immediately after span creation (guarded by
is_recording()) so on_start hooks and samplers still see them, while
the finished span is guaranteed to carry FastMCP's telemetry
regardless of sampler behavior.
 2026-07-18 19:52:53 -04:00
Jeremiah Lowin
d0afccb028
 		Merge remote-tracking branch 'origin/main' into codex/otel-on-start-attributes 
# Conflicts:
#	fastmcp_slim/fastmcp/server/telemetry.py
 2026-07-18 19:34:04 -04:00
Kevin J Gao
3fdeedb567
 		Improve DescopeProvider scope discovery and well-known URL support (#4489) 
* Improve DescopeProvider scope discovery and well-known URL support

Co-authored-by: Cursor <cursoragent@cursor.com>

* Simplify DescopeProvider scope and URL handling

Co-authored-by: Cursor <cursoragent@cursor.com>

* Make DescopeProvider scope discovery async and lazy

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
🤖 Generated with Claude Code

* Use generic scope in Descope tests

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
🤖 Generated with Claude Code

* Address Descope discovery edge cases

* Deduplicate Descope metadata fallback

---------

Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
Co-authored-by: Jeremiah Lowin <153965+jlowin@users.noreply.github.com>
 2026-07-18 16:18:45 -04:00
dependabot[bot]
c241cd4698
 		chore(deps): bump mcp from 1.26.0 to 1.27.2 in /examples/testing_demo in the uv group across 1 directory (#4514) 
Signed-off-by: dependabot[bot] <support@github.com>
 2026-07-18 15:49:30 -04:00
Jeremiah Lowin
7e077186fc
 		Clean up task sessions on connection exit (#4535) 2026-07-18 15:45:11 -04:00
Jeremiah Lowin
16383a64d6
 		Preserve component metadata in response cache (#4521) 2026-07-18 15:42:20 -04:00
Jeremiah Lowin
00cab8ba8f
 		Fix docs banner contrast (#4522) 
* Fix docs banner contrast

* Banner: readable animated brand-rainbow in both themes
 2026-07-18 15:38:03 -04:00
Jeremiah Lowin
d7eda92a2b
 		Fix OAuth request annotation (#4534) 2026-07-18 15:29:32 -04:00
Jeremiah Lowin
981a69d839
 		Handle expired OAuth client registrations (#4520) 2026-07-18 15:16:27 -04:00
Jeremiah Lowin
18b5ab5852
 		Migrate to MCP SDK v2.0.0b2 (httpx2) (#4503) 2026-07-18 15:12:47 -04:00
Jeremiah Lowin
66c0270bc1
 		Stabilize upgraded ty checks (#4526) 2026-07-17 17:46:53 -04:00
Jeremiah Lowin
bdb76ef4b2
 		Clean up disconnected task sessions (#4519) 2026-07-17 17:46:13 -04:00
Jeremiah Lowin
a3ecd1edb1
 		Clarify PR-reopen flow and fix label-race that broke auto-reopen (#4518) 
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
Co-authored-by: Claude <noreply@anthropic.com>
 2026-07-17 17:43:05 -04:00
Jeremiah Lowin
d779414f8a
 		Screen templated resource parameters for path traversal by default (#4482) 
* Add ResourceSecurity screening for templated resources (defaults on)

* Add tests for resource path-security screening

* Document resource path-security; fix ty in tests

* Carry child template security policy through provider mount

Preserve a mounted template's explicit ResourceSecurity (per-param
exemptions or a deliberate opt-out) through FastMCPProviderResourceTemplate.wrap
so the parent read chokepoint honours it instead of the parent default.

* Defer mcp SDK import so fastmcp.resources loads without the [mcp] extra

* Make resource path-security docs examples self-contained and runnable

* Match exempt_params under both hyphen and underscore spellings

Template placeholders like {git-ref} extract as git_ref, so an exemption
written with the natural URI-template spelling never matched.

* Docs: describe net-depth traversal rule accurately; make example runnable

The screening only rejects .. segments that escape the starting depth
(foo/../bar passes) — saying any standalone .. is rejected overstated
the guarantee. Also define DOCS_ROOT so the example runs.
 2026-07-17 17:42:48 -04:00
Jeremiah Lowin
918b85f9b2
 		Reject positional-only tool parameters (#4524) 2026-07-17 17:37:28 -04:00
Jeremiah Lowin
ff2fc234b2
 		Trace client task management requests (#4525) 2026-07-17 17:37:12 -04:00
Jeremiah Lowin
b623c23183
 		Serialize deep object query parameters (#4523) 2026-07-17 17:33:57 -04:00
Grégoire
977f02347b
 		Forward upstream instructions through create_proxy (#4512) 
Co-authored-by: Mistral Vibe <vibe@mistral.ai>
 2026-07-17 17:29:15 -04:00
WinkleMad
6202008cf3
 		Don't mutate the caller's schema in compress_schema (#4492) 2026-07-17 17:29:01 -04:00
Burt Matthews
1fca15abe6
 		Skip unsupported JWKS keys instead of failing the whole key set (#4515) (#4517) 2026-07-17 17:28:43 -04:00
石岳峰
291fab8789
 		fix(server): omit ScalarElicitationType wrapper title from elicitation schemas (#4502) 2026-07-17 17:28:30 -04:00
Jeremiah Lowin
a04f6fd911
 		Add telemetry off-switch and mcp.protocol.version span attribute (#4481) 
* Turn OpenTelemetry instrumentation on by default with explicit off-switch

Add FASTMCP_ENABLE_TELEMETRY setting (default true) and mcp.protocol.version
span attribute for SDK parity.

* Make disabled telemetry a transparent pass-through, not a NoOpTracer

The stock NoOpTracer.start_as_current_span attaches a NonRecordingSpan, hijacking the current OTel context from any enclosing application span. When telemetry is disabled, get_tracer() now returns a non-attaching pass-through tracer so trace.get_current_span() inside handlers still resolves to the caller's span.
 2026-07-17 17:02:48 -04:00
Jeremiah Lowin
266c129b62
 		Test lifespan fires once per process over HTTP (#4480) 
* Add regression test: HTTP lifespan fires once per process across sessions

* Drop redundant enter-count assertion at teardown (CodeQL)

* Assert session-manager lifespan entry directly, not user-lifespan count
 2026-07-17 17:02:26 -04:00
Jeremiah Lowin
836ceac30e
 		Add KeyValueResponseCacheStore for distributed client response caching (#4479) 
* Add KeyValueResponseCacheStore adapter for client response cache

* Test KeyValueResponseCacheStore round-trip, isolation, and distributed sharing

* Document distributed response cache store
 2026-07-17 16:41:35 -04:00
zzstoatzz
675a23128c Expose sampling attributes on span start 
🤖 Generated with Codex
 2026-07-09 15:33:30 -05:00
zzstoatzz
e3941e23b1 Expose telemetry attributes on span start 
🤖 Generated with Codex
 2026-07-09 15:16:05 -05:00
nate nowack
1d932cc778
 		Fix Azure scope fallback (#4469) 2026-07-09 15:29:50 -04:00
Jeremiah Lowin
9f251bad00
 		Forward-port Hugging Face auth provider (#4475) 2026-07-08 20:56:07 -04:00
Jeremiah Lowin
4ad78a60ef
 		Forward-port HTTP host guard compatibility (#4474) 2026-07-08 20:55:56 -04:00
Jeremiah Lowin
00a7745994
 		Docs: forward-port v3.4.4 changelog entries (#4476) 2026-07-08 20:55:43 -04:00
Jeremiah Lowin
fd5d98bd13
 		Test: HTTP lifespan fires once per process across sessions (#4470) 2026-07-08 20:55:26 -04:00
Jeremiah Lowin
8ba5b89918
 		Add server-level cache hints (SEP-2549) (#4464) 2026-07-08 09:10:41 -04:00
Jeremiah Lowin
3c43038860
 		Fix stale mcp.types imports in examples (#4452) 2026-07-07 08:07:07 -04:00
Jeremiah Lowin
515a2244a2
 		Teach fastmcp.Client the modern protocol: mode negotiation, MRTR driver, response cache (#4450) 2026-07-07 08:00:45 -04:00
Jeremiah Lowin
f30f847e1f
 		Merge pull request #4449 from PrefectHQ/modernize/path-security 
Route skill file access through SDK path-security primitives
 2026-07-07 08:00:21 -04:00
Jeremiah Lowin
f0e350942f
 		Merge pull request #4448 from PrefectHQ/modernize/sampling-deprecation 
Deprecate ctx.sample and add clear errors for push features on 2026 connections
 2026-07-07 08:00:08 -04:00
Jeremiah Lowin
7832f884c6
 		Merge pull request #4453 from PrefectHQ/remove/deprecated-params 
Remove 3.x deprecated parameters and object-mode decorators
 2026-07-07 07:59:53 -04:00
Jeremiah Lowin
3cb34034d2
 		Merge pull request #4451 from PrefectHQ/remove/server-method-deprecations 
Remove 3.0-deprecated FastMCP server methods
 2026-07-07 07:59:40 -04:00
Jeremiah Lowin
bf3a079f87
 		Merge pull request #4447 from PrefectHQ/remove/module-shims 
Remove 3.x deprecated module shims and dead parameters
 2026-07-07 07:59:16 -04:00
Jeremiah Lowin
4a8852af10
 		Docs: register removed deprecations in v4 change register 2026-07-07 07:53:12 -04:00
Jeremiah Lowin
7c2133a52f
 		Remove deprecated component-import __getattr__ shims 2026-07-07 07:53:12 -04:00
Jeremiah Lowin
805ce96689
 		Remove deprecated decorator_mode setting and object-mode machinery 2026-07-07 07:53:12 -04:00
Jeremiah Lowin
45475bd072
 		Remove deprecated exclude_args tool parameter 2026-07-07 07:53:12 -04:00
Jeremiah Lowin
da5754671b
 		Document as_proxy backend keyword migration 2026-07-07 07:53:11 -04:00
Jeremiah Lowin
7f032bb82e
 		Remove deprecated tool-level serializer parameter 2026-07-07 07:53:11 -04:00
Jeremiah Lowin
396fb876d3
 		Apply ruff-format: drop now-unused imports and reflow 2026-07-07 07:53:11 -04:00
Jeremiah Lowin
508a08475f
 		Docs: mark removed-in-4.0 deprecations in upgrade guide and change register 
Annotates the v2->v3 upgrade guide's deprecated server methods as removed in
v4, and adds a Removed in 4.0 section to the change register.
 2026-07-07 07:53:11 -04:00
Jeremiah Lowin
6a6fdcb2bb
 		Repoint tests and examples off removed deprecations 
Replaces FastMCP.as_proxy() helper calls with create_proxy(), rewrites the
mount() as_proxy=/prefix= kwarg tests to plain mount() (the params are gone),
and deletes deprecation-only tests for as_proxy() and remove_tool().
 2026-07-07 07:53:11 -04:00
Jeremiah Lowin
14373cc60b
 		Repoint examples off removed shim paths 2026-07-07 07:53:10 -04:00
Jeremiah Lowin
e5d9d1f17d
 		Remove deprecated FastMCP server methods for 4.0 
Removes deprecations that shipped replacements in 3.0:
- FastMCP.as_proxy() classmethod -> create_proxy()
- import_server() -> mount()
- mount(prefix=) -> namespace=
- mount(as_proxy=) -> now meaningless; mounts always invoke lifespan/middleware
- add_tool_transformation() -> add_transform(ToolTransform({...}))
- remove_tool_transformation() -> pure no-op that warned callers it had no
  effect; removed entirely
- FastMCP.remove_tool() -> mcp.local_provider.remove_tool()

Also drops the now-unused URI_PATTERN/re import and FastMCPDeprecationWarning
import. The _REMOVED_KWARGS TypeError shim is retained.
 2026-07-07 07:53:10 -04:00