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@github-actions github-actions released this 23 Jul 18:50
rmcp-v3.0.0-beta.1
e660b80
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Added

  • route SEP-2260 associated server requests to the originating SSE stream (#1029)
  • [breaking] add distributed SSE event store (#1024)
  • add client-side TTL-honoring response cache (SEP-2549) (#1025)
  • [breaking] Implement SEP-2663 Tasks Extension (#1020)
  • add subscription listen streams (SEP-2575) (#1000)
  • (auth) bind DCR client credentials to issuing authorization server (SEP-2352) (#998)
  • add modern client lifecycle modes (SEP-2575) (#995)
  • (auth) accumulate client-side scopes during step-up authorization (#888)
  • [breaking] add server discovery and negotiation (SEP-2575) (#973)
  • (conformance) add SEP-2243 header validation tool (#997)
  • [breaking] align metadata models with draft schema (#993)
  • [breaking] implement SEP-2549 cache hints (#889)
  • [breaking] add MRTR behavior support (SEP-2322) (#929)
  • [breaking] type Annotations.lastModified as a string (#956)
  • [breaking] add SEP-2243 HTTP standard headers (#907)
  • relax outputSchema to accept non-object JSON Schema types (SEP-2106) (#895)
  • [breaking] relax tool result structuredContent type (SEP-2106) (#933)
  • [breaking] add MRTR model types (SEP-2322) (#915)

Fixed

  • reap completed response send tasks (#1026)
  • accept stringified numeric response IDs (#1021)
  • re-register after auth server change (#1011)
  • .with_stateful_mode -> .with_legacy_session_mode (#1015)
  • preserve negotiated progress responses (#1005)
  • (server) serve draft-version requests statelessly per SEP-2567 (#999)
  • pass client header conformance (#1012)
  • (auth) add an SDK path for pre-registered OAuth clients (#994)
  • (transport) cancel in-flight request on stateless streamable-HTTP client disconnect (#857) (#967)
  • (auth) distinguish rejected refresh tokens from transient failures (#963)
  • (auth) validate discovered metadata issuer (#996)
  • bound streamable HTTP memory usage (#970)
  • (streamable-http) preserve progress in JSON mode (#990)
  • specify compatible sse-stream version (#968)
  • flag schema derive on schemars feature (#966)

Other

  • refactor OAuth client authorization api (#1009)
  • update for 2026-07-28 version (#1032)
  • (deps) update hmac requirement from 0.12 to 0.13 (#988)
  • serialize JavaScript dependency install (#972)

Changed

  • BREAKING: rename StreamableHttpServerConfig::stateful_mode to legacy_session_mode (and the builder with_stateful_mode to with_legacy_session_mode) to clarify that the option only affects legacy protocol versions (< 2026-07-28); per SEP-2567 the 2026-07-28 draft version is always served statelessly (#999)

Fixed

  • use the authorization server issuer as the default private_key_jwt audience
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