8c88d2792b
Tighten the public API surface: root exports, listen types, dead-code removal
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Root `mcp` package: export `MCPServer` (alongside the existing `Client`,
so `from mcp import MCPServer, Client` works) and `NoBackChannelError`;
drop the v1-carryover `SamplingRole` alias (`mcp.types.Role`). `mcp.client`
now re-exports the types `Client.listen()` yields and raises: `Subscription`,
`SubscriptionLost`, `ListenNotSupportedError`.
Remove dead surface: `StreamableHTTPError`/`ResumptionError` (never raised
from a reachable path) and `StreamableHTTPTransport.get_session_id()` on the
client transport; the no-op `RegistrationRequest`/`TokenSuccessResponse`
auth-handler aliases; the `validate_extension_identifier` re-export alias;
the unreachable `__main__` guard in `mcp/cli/__init__.py`. The unused
lowlevel server `Context` moves to the private `mcp.server._context`
module.
`_handle_resumption_request` now takes the resumption token as a required
argument instead of re-deriving it and carrying an unreachable no-token
branch.
Enable ruff `RUF022` and sort every `__all__`; `mcp_types/__init__.py` is
exempted since its `__all__` is grouped by section comments on purpose.
2026-07-28 11:25:13 +00:00
528e366558
Fail fast on server-to-client requests in JSON-response mode instead of hanging ( #3195 )
2026-07-28 11:04:51 +01:00
27f5cc7a46
Remove unused mcpserver.exceptions.ValidationError ( #3199 )
2026-07-28 10:25:51 +01:00
89c5e700f2
Gate log notifications on the per-request log-level opt-in at 2026-07-28 ( #3198 )
2026-07-28 02:20:33 +01:00
b7c9a916d6
Add mcp.types as a permanent alias for mcp_types ( #3190 )
2026-07-27 23:47:04 +01:00
923341c98a
Stop answering cancelled requests ( #3188 )
2026-07-27 23:26:00 +01:00
d3ffe87960
Split the registration request model from the registered-client record ( #3181 )
2026-07-27 23:11:01 +01:00
b9422f1c9b
Make the per-version wire packages private (mcp_types._v*) ( #3191 )
2026-07-27 22:16:48 +01:00
f599cdfcf9
Cache compiled output-schema validators on ClientSession ( #3134 )
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Co-authored-by: Max Isbey <224885523+maxisbey@users.noreply.github.com >
2026-07-26 11:29:10 +01:00
11934c90ae
Replace FileResource.is_binary with an encoding field ( #3171 )
2026-07-26 00:58:06 +01:00
814072c94d
Narrow message_handler's parameter to notifications and exceptions ( #3168 )
2026-07-26 00:24:48 +01:00
47bfa85e83
Remove the unused timeout parameter from OAuthClientProvider ( #3165 )
2026-07-26 00:22:15 +01:00
3212591946
Stop advertising MCP_* env vars for MCPServer settings; drop pydantic-settings ( #3170 )
2026-07-25 23:22:27 +01:00
7163d8263f
Remove the deprecated RFC7523OAuthClientProvider ( #3169 )
2026-07-25 22:50:57 +01:00
e90a66b554
Rename scopes= to scope= on the client-credentials OAuth providers ( #3166 )
2026-07-25 20:23:36 +01:00
5dd062d077
Remove Context.client_id ( #3167 )
2026-07-25 19:11:51 +01:00
0cb920f126
Make CacheConfig() the Client cache default and None the off switch ( #3164 )
2026-07-25 17:50:53 +01:00
629ca297d2
Isolate the stdio server's stdin and stdout from handler subprocesses ( #3117 )
2026-07-25 13:05:51 +01:00
00a70148bc
Serve the 2026-07-28 protocol over stdio: decide the era from the opening request ( #3152 )
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2026-07-24 13:46:37 +01:00
837ef904f8
Align with spec #3002 : optional clientInfo, serverInfo in result _meta ( #3143 )
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2026-07-23 12:00:36 +01:00
03aaebd3aa
Add Streamable HTTP request body limits ( #3095 )
2026-07-16 08:33:32 +02:00
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
1216c53693
fix: reject trailing newline in tool-name and URI-template varname validation ( #3076 )
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Python's $ with re.match also matches just before a single trailing newline, so tool-name validation accepted "name\n" and UriTemplate.parse accepted varnames like "foo\n". Switch both checks to re.fullmatch.
Closes #3084
2026-07-10 12:56:54 +00:00
9bdc03d54e
Add the client-side subscriptions/listen driver ( #3047 )
2026-07-07 14:26:09 +01:00
d287c9868f
Extend resolver DI to sampling and roots requests ( #3049 )
2026-07-06 18:25:57 +01:00
53117cb3a9
Make client-side cancellation work over the 2026 transports ( #3046 )
2026-07-02 19:21:04 +01:00
080f2a869d
Harden the dual-era stream loop's era-lock and rejection semantics ( #3040 )
2026-07-01 17:07:12 +01:00
e50fb5be19
Serve the 2026-07-28 era over stdio and other stream-pair transports ( #3038 )
2026-07-01 00:11:56 +01:00
dcf8a6a0b5
Document pydantic.ValidationError in client Raises sections ( #3036 )
2026-07-01 00:03:17 +01:00
ca10dade2c
Serve subscriptions/listen with a pluggable event bus (SEP-2575) ( #3035 )
2026-06-30 23:01:04 +01:00
48ef569f7e
Validate Mcp-Param-* headers server-side on the 2026-07-28 HTTP path (SEP-2243) ( #3033 )
2026-06-30 21:39:32 +01:00
4df609119f
Add a client extension API ( #3034 )
2026-06-30 21:31:02 +01:00
7322ca56f4
Require integrity protection for MRTR requestState ( #3032 )
2026-06-30 21:30:32 +01:00
b15b1d5f07
Add a client-side response cache honoring SEP-2549 caching hints ( #3023 )
2026-06-30 11:31:06 +01:00
8d0f928e40
Pass InputRequiredResult through the MCPServer prompt and resource pipelines ( #3020 )
2026-06-29 16:50:58 +01:00
8f2c97b769
Consult request_state only for the question a resolver is asking ( #3019 )
2026-06-29 16:44:05 +01:00
533c6a8226
Add cache_hints constructor map for SEP-2549 caching hints ( #3015 )
2026-06-29 14:11:15 +00:00
c85836a081
Drive resolver elicitation over the 2026-07-28 input_required flow ( #2986 )
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Co-authored-by: Max Isbey <224885523+maxisbey@users.noreply.github.com >
2026-06-29 14:39:43 +01:00
f664db8952
Add resolver dependency injection for MCPServer tools ( #2969 )
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Co-authored-by: Max Isbey <224885523+maxisbey@users.noreply.github.com >
2026-06-29 11:51:46 +01:00
4b519782f1
Add a pluggable server extension API with MCP Apps ( #3003 )
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Co-authored-by: Max Isbey <224885523+maxisbey@users.noreply.github.com >
2026-06-29 10:58:05 +01:00
e942d00b98
Re-vendor 2026-07-28 schema at spec ead35b59 (SubscriptionsListenResult) ( #3006 )
2026-06-27 10:15:34 +02:00
24717cc8eb
feat: RFC 6570 URI templates with operator-aware security ( #2356 )
2026-06-26 20:29:17 +02:00
067f90578c
Add SSE response mode to the 2026 streamable-HTTP server entry ( #3001 )
2026-06-26 19:09:08 +02:00
c0ecb70e24
Support RFC 8693 token exchange for enterprise IdP flows (SEP-990) ( #2988 )
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Co-authored-by: Max Isbey <224885523+maxisbey@users.noreply.github.com >
2026-06-26 17:57:10 +02:00
ecdf09d44f
Deprecate Server.__init__ handlers for removed capabilities ( #3002 )
2026-06-26 17:51:13 +02:00
08b62308d4
Client auto-resolves InputRequiredResult via existing callbacks (SEP-2322) ( #2998 )
2026-06-26 17:35:23 +02:00
3945bdde11
Remove the dispatch-tier middleware hook ( #2997 )
2026-06-26 17:08:16 +02:00
b31d95a429
Make OpenTelemetry tracing the single default middleware ( #2995 )
2026-06-26 15:47:37 +02:00
cc596195bb
Switch RFC7523OAuthClientProvider warning to MCPDeprecationWarning ( #2996 )
2026-06-26 15:27:57 +02:00
5b2713d40c
Mirror x-mcp-header tool arguments into Mcp-Param-* request headers (SEP-2243) ( #2990 )
2026-06-26 14:36:56 +02:00
Max Isbey