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v0.20.0

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@koic koic released this 14 Jun 08:39
23af995

Added

  • Support W3C Trace Context Propagation via _meta per SEP-414 (#397)
  • Support OAuth client_credentials grant in OAuth client (#399)
  • Add annotations field to MCP::Resource and MCP::ResourceTemplate per MCP specification (#403)

Changed

  • Re-run OAuth flow on 403 insufficient_scope (step-up) (#368)
  • Speed up Tool::Schema validation by 5x to 100x (#369)
  • Use JSON-RPC error envelope for StreamableHTTPTransport errors (#371)
  • Pin RFC 8414 default well-known suffix per SEP-2351 (#395)
  • Default missing MCP-Protocol-Version to 2025-03-26 in StreamableHTTPTransport (#392)

Fixed

  • Preserve the request ID in invalid request error responses (#400)
  • Standardize Resource Not Found errors on -32602 with URI data per SEP-2164 (#402)