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Author SHA1 Message Date
Jeremiah Lowin
2d4b824a53
 		Merge remote-tracking branch 'origin/main' into claude/sdk-resolve-annotation-1d4770 2026-08-06 20:13:14 -04:00
Jeremiah Lowin
32e3eaf96a
 		Merge main into declarative elicitation 2026-08-06 20:12:39 -04:00
Sai Mouli
06fee6d300
 		Serialize the event store's stream list read-modify-write (#4758) v4.0.0b2 
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
Co-authored-by: Jeremiah Lowin <153965+jlowin@users.noreply.github.com>
 2026-08-06 20:09:36 -04:00
Jamie Zieziula
706f7d2695
 		feat(renovate): migrate to Renovate, retire Dependabot (#4754) 
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
 2026-08-06 20:02:29 -04:00
Chris Guidry
1ac8fc6060
 		Encrypt task context snapshots at rest (#4772) 
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
 2026-08-06 20:01:40 -04:00
Jeremiah Lowin
04f9971120
 		Delegate typed tool output serialization to Pydantic (#4771) 2026-08-06 19:59:19 -04:00
marvin-context-protocol[bot]
803da5319c
 		chore: Update SDK documentation (#4679) 2026-08-06 19:56:40 -04:00
Jake Kaplan
9feb1f378b
 		Forward proxy server metadata across protocol eras (#4776) 
* Forward proxy negotiation metadata

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* Limit forwarded proxy metadata

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* Tighten negotiation metadata forwarding

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* Tighten proxy metadata docs

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* Keep proxy metadata middleware with provider

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* Simplify proxy negotiation middleware API

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* Name proxy metadata middleware directly

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* Preserve discovery middleware contracts

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* Clarify proxy metadata ownership

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* Align proxy metadata wording

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* Call forwarded values server metadata

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* Harden proxy metadata reads

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* Expose configured discovery result

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* Preserve proxy discovery compatibility

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* Preserve deprecated initialization middleware

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* Harden proxy metadata boundaries

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* Restore deprecated middleware location

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* Simplify proxy metadata client lifecycle

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* Clarify proxy metadata lifecycle

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* Preserve proxy factory errors

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* Detach forwarded proxy metadata

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* Simplify proxy metadata implementation

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* Distinguish proxy metadata failures

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* Narrow proxy metadata validation fallback

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* Retrigger CI

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 2026-08-06 19:09:05 -04:00
nate nowack
75fb116e36
 		Support EdDSA verification in JWTVerifier (#4752) 2026-08-06 14:09:37 -04:00
Jeremiah Lowin
6fb34e9383
 		Document MCP protocol support and conformance (#4781) 2026-08-06 11:15:38 -04:00
Yonatan
c8b88b3a37
 		fix(context): move elicit overload docs inside the stubs so mypy sees the chain (#4774) 2026-08-06 09:35:49 -04:00
Jeremiah Lowin
2bee9aeb58
 		Clarify review of closed contributor PRs (#4780) 2026-08-06 09:34:11 -04:00
Jeremiah Lowin
875e8e18bd
 		Preserve legacy httpx compatibility without importing it (#4766) 2026-08-05 18:09:16 -04:00
Jake Kaplan
959daf2321
 		Sanitize forwarded request metadata where the proxy copies it (#4770) 
* Separate proxy protocol policy from client construction

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* Strip connection-owned request metadata at the proxy backend boundary

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Sanitize forwarded request metadata where the proxy copies it

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Forward hop-safe request metadata for proxied resources, templates, and prompts

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
 2026-08-05 15:46:10 -04:00
nate nowack
8661193411
 		Quote run-claude allowed tools argument (#4741) 
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 2026-08-05 11:15:51 -04:00
Jeremiah Lowin
e4d8ca648a
 		Avoid loading MCP and CLI stacks during lightweight imports (#4763) 2026-08-05 10:56:13 -04:00
Jeremiah Lowin
2c2f98691f
 		Docs: mirror v3.4.6 release notes (#4764) 2026-08-05 10:53:15 -04:00
nate nowack
b9b7ea6914
 		Declare run-claude extra allowed tools input (#4740) 
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 2026-08-05 10:39:35 -04:00
Sai Mouli
4f28dceac8
 		Don't cache error results in ResponseCachingMiddleware (#4705) 2026-08-04 17:15:01 -04:00
LHMQ878
db92d44ef5
 		Serve empty list results from the response cache (#4738) 2026-08-04 17:11:42 -04:00
Jeremiah Lowin
886776f5fc
 		Canonicalize response cache arguments (#4753) 
Co-authored-by: LHMQ878 <LHMQ878@users.noreply.github.com>
 2026-08-04 15:25:46 -04:00
Jeremiah Lowin
d267792653
 		docs: clarify external OAuth consent mode (#4746) 2026-08-03 18:02:09 -04:00
nate nowack
a7e9b70919
 		Fix static analysis with latest ty (#4739) 
* Fix upgrade static analysis

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* Preserve concrete transport return types

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* Avoid widening transport return types

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* Model transforming transport return types

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* Exclude standalone screenshot examples from ty

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 2026-08-03 10:53:23 -05:00
Jeremiah Lowin
022547ad8c
 		Preserve string-compatible prompt arguments (#4730) 2026-08-02 14:56:05 -04:00
Jeremiah Lowin
34bdd480c9
 		Improve HTTP server startup performance (#4729) 2026-08-02 14:11:26 -04:00
Shuying
c428a08fea
 		fix: preserve valid servers during CLI discovery (#4714) 
Co-authored-by: Shuying <zsy@u.northwestern.edu>
 2026-08-02 09:42:26 -04:00
Martin Styk
10b158baf3
 		Forward enable_cimd to Auth0, AWS Cognito and OCI providers (#4719) 
Signed-off-by: Martin Styk <mart.styk@gmail.com>
 2026-08-02 09:42:06 -04:00
YAO_001
9034a2eb4b
 		Fix CodeMode tool error propagation (#4704) 
Co-authored-by: nate nowack <thrast36@gmail.com>
 2026-08-02 09:41:36 -04:00
nate nowack
40c3e122e8
 		Write downloaded skill text as UTF-8 (#4715) 2026-08-02 09:33:32 -04:00
Jake Kaplan
bc07264529
 		Fix self-referential connection error causes (#4720) 
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 2026-07-30 16:23:33 -04:00
Jeremiah Lowin
bcef61d806
 		Route published docs through pull requests (#4713) 2026-07-30 10:18:03 -04:00
Nicholas Brown
0f18a258d4
 		add language dropdown (#4716) 2026-07-30 09:32:58 -04:00
nate nowack
44c0907dda
 		Give parallel Windows CI more timeout headroom (#4680) 
pytest-timeout falls back to its thread method on Windows, which os._exit()s
the process instead of failing the test. A single slow test therefore kills an
xdist worker and fails whichever unrelated test it was running.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
 2026-07-29 10:22:17 -05:00
Jeremiah Lowin
07f6eafd99
 		Add comprehensive Codex code review rules (#4710) 2026-07-29 09:51:36 -04:00
Jeremiah Lowin
a22f778dbf
 		Rewrite the FastMCP docs welcome page (#4709) 2026-07-29 09:51:22 -04:00
Jeremiah Lowin
0792ac812c
 		Improve the v4 docs (#4707) 2026-07-29 09:51:13 -04:00
Jeremiah Lowin
7339936980
 		Rewrite the v4 What's New page and document server extensions (#4698) 
* Rewrite the v4 What's New page

Teach the headline features with code instead of asserting them, drop the
major-version throat-clearing and SEP list, and correct the elicitation
claim: ctx.elicit() is unchanged and handshake-only, while sampling and
roots are removed outright.

* Fix broken doc links and stale version references

Repoint five dead links and anchors, refresh v3-era version examples on the
v4 docs, and add the missing FastMCP 3 entry to the installation page's
upgrade section.

* Document server extensions

add_extension() shipped in v4 with no documentation page. Covers the
extension interface, request methods, tool-call interception, lifespan
ownership, and the client half.

* Link the FastMCP TypeScript library

* Address Codex review feedback

Gate the extension interceptor on the client's per-request opt-in rather
than claiming negotiation does it; show the v4 beta pin on the install
page instead of a version a reader cannot get; note that UserSession
requires authentication.
 2026-07-28 20:05:45 -04:00
Jeremiah Lowin
7a77805159
 		Use mcp.types directly instead of aliasing to mcp_types in docs (#4696) 2026-07-28 19:08:44 -04:00
Jeremiah Lowin
baced6281c
 		Always emit a tool title, derived from name when unset (#4694) 
* Always emit a tool title, derived from name when unset

Some MCP clients (e.g. ChatGPT) drop tools with no `title` instead of
falling back to `name` for display as the spec allows. Deriving a
default title in Tool.to_mcp_tool() fixes this for every tool built on
top of it, including the search-transform, code-mode, and session
proxy tools that never set one explicitly.

Fixes #4414

* Derive fallback title from the overridden name, document it

Addresses Codex review on #4694.

* Resolve title precedence from effective overrides

* Normalize mapping annotations before deriving the title
 2026-07-28 17:30:20 -04:00
Jeremiah Lowin
16cd68d520
 		Reflect declared parameters across the docs 
Migration guides now map the SDK's Resolve to Elicit rather than claiming
FastMCP has no resolver injection; the FastMCP 3 guide leads its ctx.elicit
era-gate section with declaring the parameter, since that is the fix that
serves both eras. Client docs cover answering the rounds yourself, including
the two same-named ElicitResult types. Also fixes a pre-existing broken
anchor in the FastMCP 3 guide.
 2026-07-28 17:18:25 -04:00
Jeremiah Lowin
5a98ceb5ca
 		Add v4.0.0b1 changelog and updates entries (#4681) v4.0.0b1 
* Add v4.0.0b1 changelog and updates entries

* Drop meta note from b1 intro; add #4682 under enhancements

* File #4682 under fixes

* Correct the camelCase rename claim: Python model fields, not the wire

* Baseline the b1 changelog on v3.4.5

* Simplify the beta banner
 2026-07-28 17:15:48 -04:00
Jeremiah Lowin
42d8f50499
 		Merge remote-tracking branch 'origin/main' into claude/sdk-resolve-annotation-1d4770 2026-07-28 17:12:56 -04:00
Jeremiah Lowin
ecc05fa504
 		Hand back the question when the client cannot answer it 
No elicitation handler and a tool that asks now yields the question on
CallToolResult.input_required instead of an 'Elicitation not supported'
error. A handler still answers inline where one is registered, and legacy
still errors, because there the server is blocked mid-call and there is no
result to hand back. No opt-in flag: not passing a handler already says it.
 2026-07-28 17:09:57 -04:00
Jeremiah Lowin
5fe1887fa0
 		Name the client-side flag for who drives the exchange 
allow_input_required was the SDK session's own vocabulary. drive=True (the
default) answers each ask from the client's handlers and returns a terminal
result; drive=False hands the ask back so the caller can answer it on a later
call, which is what an app whose user replies minutes later actually needs.
 2026-07-28 16:57:51 -04:00
Jeremiah Lowin
2018242664
 		Let call_tool drive an input-required exchange leg by leg 
call_tool and call_tool_mcp take input_responses and request_state, and
allow_input_required hands back the ask instead of resolving it against the
client's own handlers. CallToolResult carries it on input_required, mirroring
the server's InputRequiredToolResult.
 2026-07-28 16:55:10 -04:00
Jeremiah Lowin
1a49190d00
 		Match ctx.elicit's message and response_type on Elicit 
The declarative form describes the same request as the imperative one, so it
takes the same keywords. The difference is await versus return.
 2026-07-28 16:38:23 -04:00
Jeremiah Lowin
8b76710e66
 		Move to the stable MCP Python SDK 2.0.0 (#4655) 2026-07-28 16:31:49 -04:00
Jeremiah Lowin
3ad16cd578
 		Merge remote-tracking branch 'origin/main' into claude/sdk-resolve-annotation-1d4770 
# Conflicts:
#	docs/servers/elicitation.mdx
 2026-07-28 16:22:54 -04:00
Jeremiah Lowin
1f379b1218
 		Let a resolver decide whether to ask at all 
Elicit becomes generic and a resolver returns `T | Elicit[T]`: a value fills
the parameter without asking, an Elicit performs the ask. elicit_type states
the type where the annotation is out of view, and a resolver's declared
Elicit[T] is checked against its parameter at registration.

Also fixes 3.10, where get_type_hints still applies implicit-Optional, so a
`= None` parameter arrived wrapped in a Union and the buried-marker guard
misfired on the legitimate optional form.
 2026-07-28 16:20:38 -04:00
Jeremiah Lowin
81b1e818e5
 		Apply app visibility where no host can (#4692) 2026-07-28 16:12:38 -04:00