98bd125ddd
Serve the 2026-07-28 protocol over stdio by deciding the era from the opening message
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The 2026-07-28 protocol did not work over stdio: subscriptions/listen
was hard-refused, a legacy initialize arriving during an in-flight
modern request was accepted and re-locked the connection, and a peer
cancel produced a trailing "Request cancelled" frame. All three share
one root cause: the connection's era was derived from which requests
had completed instead of being decided once, in wire order, from how
the client opened the connection.
Replace serve_dual_era_loop and serve_loop with a single serve_stream
driver that decides the era synchronously in the dispatcher's read
loop, before the request body is spawned. initialize (or any
envelope-less request) opens the legacy era, an enveloped request opens
the modern era, server/discover is answered without pinning, and a
stray leading notification opens nothing. A conflicting era claim on a
committed connection is refused (-32022 or -32600) rather than
silently switching.
Cancel silence is structural: each request answers through a one-shot
channel whose write target becomes a powerless void on a peer cancel,
so there is no cancelled-check at any write site. The generic JSON-RPC
dispatcher loses the code-0 cancel frame, the code-0 str(exc)
catch-all, and the inline_methods knob, and documents that handlers
are invoked synchronously in receive order with the returned awaitable
as the body.
Add a Posture enum (DUAL default, LEGACY_ONLY, MODERN_ONLY) on the
Server and MCPServer constructors, honoured by the stream driver and
the streamable-HTTP manager alike. Server.run(read, write) now stands
alone, Server.lifespan() is a bound context manager, and
serve_listener / newline_json_transport / close_subscriptions() give a
straightforward path for custom transports. See docs/migration.md for
the full list of observable changes.
2026-07-23 13:18:49 +00:00
837ef904f8
Align with spec #3002 : optional clientInfo, serverInfo in result _meta ( #3143 )
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2026-07-23 12:00:36 +01:00
2713b53b12
Replace httpx and httpx-sse with httpx2 ( #2972 )
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Co-authored-by: Max Isbey <224885523+maxisbey@users.noreply.github.com >
2026-07-14 17:05:08 +01:00
d39c68df23
De-flake conformance CI: solo re-verification, spawn-storm reduction, result artifacts ( #3043 )
2026-07-01 16:59:06 +01:00
ca10dade2c
Serve subscriptions/listen with a pluggable event bus (SEP-2575) ( #3035 )
2026-06-30 23:01:04 +01:00
7322ca56f4
Require integrity protection for MRTR requestState ( #3032 )
2026-06-30 21:30:32 +01:00
0b200ef03b
Surface skipped conformance scenarios as baselined known failures ( #3030 )
2026-06-30 13:07:05 +01:00
8d0f928e40
Pass InputRequiredResult through the MCPServer prompt and resource pipelines ( #3020 )
2026-06-29 16:50:58 +01:00
587340279e
Conformance burn-down: server-side InputRequiredResult, Mcp-Method/Name validation, x-mcp-header filter (14 scenarios → green) ( #2974 )
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2026-06-26 09:51:59 +02:00
0ee7f1b293
Split protocol types into a standalone mcp-types package ( #2973 )
2026-06-25 19:18:38 +02:00
2397319a68
Server-side 2026-07-28 stateless support: classifier, driver split, server/discover ( #2928 )
2026-06-21 19:34:17 +01:00
4573e4ac33
Deprecate roots, sampling, and logging methods per SEP-2577 ( #2926 )
2026-06-20 18:25:41 +02:00
5d826490b6
[v2] Dispatcher/ServerRunner receive-path swap — replaces BaseSession ( #2710 )
2026-06-09 12:58:47 +01:00
8cc187fac0
Remove Tasks (SEP-1686) from the SDK ( #2714 )
2026-06-02 18:27:05 +02:00
3eb579948a
Add subject and claims to AccessToken ( #2686 )
2026-05-26 13:13:55 +00:00
abfb482246
refactor(examples): migrate all HTTP examples to streamable_http_app() ( #2291 )
2026-03-16 11:37:01 +00:00
31a38b5078
fix: correct Context type parameters across examples and tests ( #2256 )
2026-03-09 16:52:56 +00:00
0a22a9dc33
refactor: replace lowlevel Server decorators with on_* constructor kwargs ( #1985 )
2026-02-12 15:55:54 +00:00
d3133ae6ce
chore: update author metadata to LF Projects ( #1992 )
2026-02-04 11:01:33 +00:00
1a8c14a5b8
refactor: replace mcp.types as types to from mcp import types ( #1986 )
2026-02-03 16:42:29 +00:00
65c614e48e
Rename FastMCP to MCPServer ( #1951 )
2026-01-25 14:45:52 +01:00
f0ab53e194
Add meta to Client methods ( #1923 )
2026-01-22 14:50:39 +01:00
7b728a243e
refactor: drop unused logger/logging ( #1926 )
2026-01-22 11:56:41 +01:00
d41d0c0128
chore: add D212 lint rule to enforce Google-style docstrings ( #1892 )
2026-01-16 16:10:52 +00:00
8adb5bdce8
refactor: move transport-specific parameters from FastMCP constructor to run() ( #1898 )
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Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com >
2026-01-16 15:16:20 +00:00
e94b386a13
refactor: use snake case instead of camel case in types ( #1894 )
2026-01-16 15:51:27 +01:00
cfb2909631
fix: change Resource URI fields from AnyUrl to str ( #1863 )
2026-01-16 09:58:57 +01:00
6b69f6354a
docs: fix simple-auth README references to non-existent scripts ( #1829 )
2026-01-08 14:45:31 +00:00
adcc17b968
types: add missing py.typed from examples package ( #1833 )
2026-01-06 18:54:58 +00:00
fa851d93a2
feat: backwards-compatible create_message overloads for SEP-1577 ( #1713 )
2025-12-02 13:17:45 +00:00
281fd4765e
Add SSE polling support (SEP-1699) ( #1654 )
2025-12-02 11:44:49 +00:00
c92bb2f7ff
SEP-1686: Tasks ( #1645 )
2025-11-28 18:51:58 +00:00
b19fa6f279
SEP-1330: Elicitation Enum Schema Improvements and Standards Compliance ( #1246 )
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Co-authored-by: Tapan Chugh <tapanc@cs.washington.edu >
Co-authored-by: Felix Weinberger <fweinberger@anthropic.com >
Co-authored-by: Felix Weinberger <3823880+felixweinberger@users.noreply.github.com >
2025-11-23 23:32:08 +00:00
71c475588f
Implement SEP-1577 - Sampling With Tools ( #1594 )
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Co-authored-by: Felix Weinberger <fweinberger@anthropic.com >
Co-authored-by: Claude <noreply@anthropic.com >
2025-11-22 23:58:14 -05:00
be730674ad
Add SEP-1034 conformance test support to everything-server ( #1604 )
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Co-authored-by: Max Isbey <224885523+maxisbey@users.noreply.github.com >
2025-11-11 17:44:23 +00:00
a864840825
Add end-of-file-fixer pre-commit hook ( #1610 )
2025-11-11 13:23:08 +00:00
da4fce2195
Add everything-server for comprehensive MCP conformance testing ( #1587 )
2025-11-09 13:45:37 +00:00
f161149680
Implement RFC 7523 JWT flows ( #1247 )
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Co-authored-by: Yann Jouanin <yann.jouanin@valueandco.com >
2025-10-29 16:48:08 +00:00
340af403bd
Replace deprecated dev-dependencies with dependency-groups ( #1488 )
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Co-authored-by: Felix Weinberger <fweinberger@anthropic.com >
Co-authored-by: Felix Weinberger <3823880+felixweinberger@users.noreply.github.com >
2025-10-23 17:22:16 -07:00
eb34ab7c72
fix: Remove unnecessary constructor from ResourceServerSettings ( #1424 )
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Co-authored-by: Felix Weinberger <3823880+felixweinberger@users.noreply.github.com >
2025-10-14 09:21:15 +02:00
7a933fe5da
Fix workspace configuration error with structured_output_lowlevel.py ( #1471 )
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Co-authored-by: lorenss-m <saeclmusic@gmail.com >
2025-10-13 15:53:46 +01:00
df3e428ee8
Improve OAuth protected resource metadata URL construction per RFC 9728 ( #1407 )
2025-10-06 13:52:44 +01:00
c0f165776d
Use streamable-http consistently in examples ( #1389 )
2025-09-23 20:19:14 +01:00
4fb975c6dc
feat: add paginated list decorators for prompts, resources, and tools ( #1286 )
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Co-authored-by: Claude <noreply@anthropic.com >
2025-09-23 14:58:06 +01:00
356dfa692b
Update simple-resource example to use non-deprecated read_resource return type ( #1331 )
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Co-authored-by: Claude <noreply@anthropic.com >
2025-09-01 17:58:01 +01:00
09e3a05e13
feat: Add CORS configuration for browser-based MCP clients ( #1059 )
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Main branch checks / checks (push) Failing after 1s
Co-authored-by: Marcelo Trylesinski <marcelotryle@gmail.com >
Co-authored-by: Felix Weinberger <fweinberger@anthropic.com >
2025-08-21 14:34:45 +01:00
0926613714
Update dependencies and fix type issues ( #1268 )
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Co-authored-by: Marcelo Trylesinski <marcelotryle@gmail.com >
2025-08-14 10:40:47 +01:00
c7671e470c
Add pyright strict mode on the whole project ( #1254 )
2025-08-11 18:56:37 +01:00
6d092af6fd
chore: add markdownlint on pre-commit hook and lint md files ( #996 )
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Co-authored-by: Marcelo Trylesinski <marcelotryle@gmail.com >
2025-07-10 09:43:49 +01:00
4fee123e72
clean up log.error ( #1109 )
2025-07-09 11:15:14 +01:00
Max Isbey