ca0c774ec9
Use token introspection instead of hardcoded token validation
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Replace the hardcoded token prefix validation with OAuth 2.0 Token
Introspection (RFC 7662). The server now:
- Discovers the introspection endpoint from AS metadata
- Calls the introspection endpoint to validate each token
- Extracts client_id, scopes, and expiry from the response
This properly integrates with the authorization server rather than
relying on hardcoded token patterns.
2026-01-14 12:14:24 +00:00
a5c7e7ca2e
Update uv.lock for conformance-auth-server
2026-01-14 12:00:10 +00:00
327930fe75
Add conformance auth server for OAuth server authentication testing
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Adds a new example server that implements OAuth bearer token authentication
for use with the MCP conformance test framework's server auth tests.
The server:
- Returns 401 with WWW-Authenticate header for unauthenticated requests
- Serves Protected Resource Metadata at /.well-known/oauth-protected-resource
- Validates tokens starting with 'test-token' or 'cc-token'
- Implements echo and test-tool tools for testing authenticated calls
Usage:
MCP_CONFORMANCE_AUTH_SERVER_URL=http://localhost:3000 \
uv run mcp-conformance-auth-server
2026-01-14 11:57:34 +00:00
d52937b39c
Make refresh_token grant type optional in DCR handler ( #1651 )
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Co-authored-by: Claude <noreply@anthropic.com >
2026-01-05 13:41:45 +00:00
c7cbfbb302
docs: add guidance on discussing features before opening PRs ( #1760 )
2026-01-01 10:07:06 +01:00
78a9504ec1
fix: return HTTP 404 for unknown session IDs instead of 400 ( #1808 )
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Co-authored-by: Max Isbey <224885523+maxisbey@users.noreply.github.com >
2025-12-31 14:06:12 +00:00
a9cc822a10
fix: accept HTTP 201 status code in token exchange ( #1503 )
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Co-authored-by: Paul Carleton <paulcarletonjr@gmail.com >
2025-12-19 18:22:00 +00:00
a4bf947540
fix: Token endpoint response for invalid_client ( #1481 )
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Co-authored-by: Max Isbey <224885523+maxisbey@users.noreply.github.com >
2025-12-19 18:19:00 +00:00
3f6b0597f1
docs: update CONTRIBUTING with v2 branching strategy ( #1804 )
2025-12-19 18:11:43 +00:00
06748eb4c4
fix: Include extra field for context log ( #1535 )
2025-12-19 17:54:03 +00:00
2aa1ad2a69
feat: standardize timeout values to floats in seconds ( #1766 )
2025-12-19 12:22:56 +00:00
4807eb5a80
Add workflow to comment on PRs when released ( #1772 )
2025-12-19 11:17:13 +00:00
ef96a31671
ci: add v1.x branch to main-checks workflow ( #1802 )
Main branch checks / checks (push) Failing after 0s
2025-12-18 16:59:30 +00:00
8ac0cab98c
Fix for Url Elicitation issue 1768 ( #1780 )
2025-12-15 18:58:17 +01:00
65b36de4eb
fix: use correct python command name in test_stdio.py ( #1782 )
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Main branch checks / checks (push) Failing after 0s
Signed-off-by: Ondrej Mosnáček <omosnacek@gmail.com >
2025-12-12 14:02:38 +00:00
a3a4b8d11a
Add streamable_http_client which accepts httpx.AsyncClient instead of httpx_client_factory ( #1177 )
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Co-authored-by: Felix Weinberger <fweinberger@anthropic.com >
2025-12-10 16:39:00 +00:00
cc8382ce3e
Fix JSON-RPC error response ID matching ( #1720 )
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Co-authored-by: Claude <noreply@anthropic.com >
Co-authored-by: Felix Weinberger <3823880+felixweinberger@users.noreply.github.com >
2025-12-10 16:15:21 +00:00
0dedbd9831
feat: client-side support for SEP-1577 sampling with tools ( #1722 )
2025-12-09 23:36:28 +00:00
779271ae38
chore: remove release-comment workflow ( #1758 )
Main branch checks / checks (push) Failing after 0s
2025-12-09 15:45:08 +00:00
2bf9b10f63
Skip empty SSE data to avoid parsing errors ( #1753 )
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Co-authored-by: ARJUN-TS1 <arjun.ts1@ibm.com >
Co-authored-by: Max Isbey <224885523+maxisbey@users.noreply.github.com >
2025-12-09 15:14:23 +00:00
8ac11ec604
fix: allow MIME type parameters in resource validation (RFC 2045) ( #1755 )
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Co-authored-by: Claude <noreply@anthropic.com >
2025-12-09 14:56:40 +00:00
b7cc25493c
feat: add workflow to comment on PRs when released ( #1750 )
2025-12-09 12:22:07 +00:00
8b984d93a3
refactor(auth): remove unused _register_client method ( #1748 )
2025-12-08 21:50:20 +00:00
89ff338174
fix: skip priming events and close_sse_stream for old protocol versions ( #1719 )
Main branch checks / checks (push) Failing after 0s
2025-12-04 14:44:08 +00:00
9ed0b93ceb
fix: handle ClosedResourceError in StreamableHTTP message router ( #1384 )
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Co-authored-by: Max Isbey <224885523+maxisbey@users.noreply.github.com >
Co-authored-by: Marcelo Trylesinski <marcelotryle@gmail.com >
2025-12-04 11:36:23 +01:00
72a34002aa
fix: add lifespan context manager to StreamableHTTP mounting examples ( #1669 )
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Co-authored-by: TheMailmans <tyler@example.com >
Co-authored-by: Marcelo Trylesinski <marcelotryle@gmail.com >
2025-12-03 22:08:21 +00:00
8e02fc17e1
chore: update LATEST_PROTOCOL_VERSION to 2025-11-25 ( #1715 )
Main branch checks / checks (push) Failing after 1s
2025-12-02 18:27:27 +00:00
d3a184119e
Merge commit from fork
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Main branch checks / checks (push) Failing after 0s
* Auto-enable DNS rebinding protection for localhost servers
When a FastMCP server is created with host="127.0.0.1" or "localhost"
and no explicit transport_security is provided, automatically enable
DNS rebinding protection. Both 127.0.0.1 and localhost are allowed
as valid hosts/origins since clients may use either to connect.
* Add tests for auto DNS rebinding protection on localhost
Tests verify that:
- Protection auto-enables for host=127.0.0.1
- Protection auto-enables for host=localhost
- Both 127.0.0.1 and localhost are in allowed hosts/origins
- Protection does NOT auto-enable for other hosts (e.g., 0.0.0.0)
- Explicit transport_security settings are not overridden
* Add IPv6 localhost (::1) support for DNS rebinding protection
Extend auto-enable DNS rebinding protection to also cover IPv6
localhost. When host="::1", protection is now auto-enabled with
appropriate allowed hosts ([::1]:*) and origins (http://[::1] :*).
* Fix import ordering in test file
2025-12-02 13:23:55 +00:00
fa851d93a2
feat: backwards-compatible create_message overloads for SEP-1577 ( #1713 )
2025-12-02 13:17:45 +00:00
f82b0c9371
Support client_credentials flow with JWT and Basic auth ( #1663 )
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Co-authored-by: Claude <noreply@anthropic.com >
Co-authored-by: Felix Weinberger <3823880+felixweinberger@users.noreply.github.com >
2025-12-02 12:53:55 +00:00
281fd4765e
Add SSE polling support (SEP-1699) ( #1654 )
2025-12-02 11:44:49 +00:00
2cd178a962
Add on_session_created callback option ( #1710 )
2025-12-01 17:48:33 +00:00
c92bb2f7ff
SEP-1686: Tasks ( #1645 )
2025-11-28 18:51:58 +00:00
5983a650cc
Skip empty SSE data to avoid parsing errors ( #1670 )
2025-11-26 18:09:39 +00:00
02b7889929
Implement SEP-1036: URL mode elicitation for secure out-of-band interactions ( #1580 )
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Co-authored-by: Felix Weinberger <3823880+felixweinberger@users.noreply.github.com >
Co-authored-by: Felix Weinberger <fweinberger@anthropic.com >
2025-11-25 11:00:21 +00:00
27279bc157
Update doc string on custom_route ( #1660 )
2025-11-24 19:20:56 +00:00
f22501315e
feat: implement SEP-991 URL-based client ID (CIMD) support ( #1652 )
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Co-authored-by: Claude <noreply@anthropic.com >
Co-authored-by: Felix Weinberger <3823880+felixweinberger@users.noreply.github.com >
2025-11-24 17:21:03 +00:00
f2517fe14b
fix: url for spec ( #1659 )
2025-11-24 16:59:48 +00:00
091afb82dc
Implement SEP-986: Tool name validation ( #1655 )
2025-11-24 16:46:57 +00:00
998f0ee4db
[auth][conformance] add conformance auth client ( #1640 )
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Co-authored-by: Claude <noreply@anthropic.com >
Co-authored-by: Felix Weinberger <3823880+felixweinberger@users.noreply.github.com >
2025-11-24 13:52:04 +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
c51936f61f
Add client_secret_basic authentication support ( #1334 )
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Co-authored-by: Paul Carleton <paulc@anthropic.com >
2025-11-20 20:53:37 +00:00
397089a78e
Add tests for JSON Schema 2020-12 field preservation (SEP-1613) ( #1649 )
2025-11-20 20:51:13 +00:00
fcffa14b5b
docs: Update examples to use stateless HTTP with JSON responses ( #1499 )
Main branch checks / checks (push) Failing after 0s
2025-11-20 15:06:37 +00:00
9c8f763aa8
chore: Lazy import jsonschema library ( #1596 )
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Co-authored-by: Max Isbey <224885523+maxisbey@users.noreply.github.com >
2025-11-19 15:30:52 +00:00
5489e8b6fb
fix get_client_metadata_scopes on 401 ( #1631 )
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Co-authored-by: Max Isbey <224885523+maxisbey@users.noreply.github.com >
2025-11-16 17:18:50 +00:00
a357380cfa
feat: Pass through and expose additional parameters in ClientSessionGroup.call_tool and .connect_to_server ( #1576 )
2025-11-16 15:57:43 +00:00
9724ad1ce6
Fix CI highest resolution test to actually test highest versions ( #1609 )
Main branch checks / checks (push) Failing after 0s
2025-11-13 20:25:43 +00:00
116c13e2c6
Refactor func_metadata() implementation ( #1496 )
2025-11-13 20:21:15 +00:00
Paul Carleton