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feat: add conformance test yaml for sep-2260 (#278)

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All text excluded as MRTR makes this spec language obsolete and enforces these associations by default.
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Caitie McCaffrey 2026-05-22 12:22:38 -07:00 • committed by GitHub
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sep: 2260
spec_url: https://modelcontextprotocol.io/specification/draft/basic/transports#streamable-http
requirements:
- text: 'roots/list, sampling/createMessage, and elicitation/create requests MUST NOT be sent on standalone streams.'
excluded: 'No longer needed this behavior is enabled by default SEP-2322 MRTR.'
- text: 'Clients MUST return standard JSON-RPC errors for common failure cases: Server sends an elicitation/create request with no associated client-to-server request: -32602 (Invalid params)'
excluded: 'No longer needed this behavior is enabled by default SEP-2322 MRTR.'
url: https://modelcontextprotocol.io/specification/draft/client/elicitation
- text: 'Clients SHOULD return standard JSON-RPC errors for common failure cases: Server sends a roots/list request with no associated client-to-server request: -32602 (Invalid params)'
excluded: 'No longer needed this behavior is enabled by default SEP-2322 MRTR.'
url: https://modelcontextprotocol.io/specification/draft/client/roots
- text: 'Clients SHOULD return errors for common failure cases: Sampling request not associated with a client-to-server request: -32602 (Invalid params)'
excluded: 'No longer needed this behavior is enabled by default SEP-2322 MRTR.'
url: https://modelcontextprotocol.io/specification/draft/client/sampling
- text: 'These messages MUST relate to the originating client request.'
excluded: 'Semantic association ("relate to") is not protocol-observable. The harness cannot determine whether a server request conceptually relates to the client request without understanding application logic.'
- text: 'Implementations SHOULD prefer transport-level SSE keepalive mechanisms for idle-connection maintenance.'
excluded: 'Implementation preference for keepalive mechanism choice; not observable on the wire.'
url: https://modelcontextprotocol.io/specification/draft/basic/utilities/ping
- text: 'Servers MUST send server-to-client requests (such as roots/list, sampling/createMessage, or elicitation/create) only in association with an originating client request (e.g., during tools/call, resources/read, or prompts/get processing).'
excluded: 'No longer needed this behavior is enabled by default SEP-2322 MRTR.'
url: https://modelcontextprotocol.io/specification/draft/client/elicitation
- text: 'Standalone server-initiated requests of these types on independent communication streams (unrelated to any client request) are not supported and MUST NOT be implemented.'
excluded: 'No longer needed this behavior is enabled by default SEP-2322 MRTR.'
url: https://modelcontextprotocol.io/specification/draft/client/elicitation
- text: 'Servers MUST send sampling/createMessage requests only in association with an originating client request (e.g., during tools/call, resources/read, or prompts/get processing).'
excluded: 'No longer needed this behavior is enabled by default SEP-2322 MRTR.'
url: https://modelcontextprotocol.io/specification/draft/client/sampling
- text: 'Standalone server-initiated sampling on independent communication streams (unrelated to any client request) is not supported and MUST NOT be implemented.'
excluded: 'No longer needed this behavior is enabled by default SEP-2322 MRTR.'
url: https://modelcontextprotocol.io/specification/draft/client/sampling
- text: 'Servers MUST send server-to-client requests (such as roots/list, sampling/createMessage, or elicitation/create) only in association with an originating client request (e.g., during tools/call, resources/read, or prompts/get processing).'
excluded: 'No longer needed this behavior is enabled by default SEP-2322 MRTR.'
url: https://modelcontextprotocol.io/specification/draft/client/roots
- text: 'Standalone server-initiated requests of these types on independent communication streams (unrelated to any client request) are not supported and MUST NOT be implemented.'
excluded: 'No longer needed this behavior is enabled by default SEP-2322 MRTR.'
url: https://modelcontextprotocol.io/specification/draft/client/roots