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Bump mcp from 0.12.0 to 0.20.0#25

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Bump mcp from 0.12.0 to 0.20.0#25
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dependabot/bundler/mcp-0.20.0

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Bumps mcp from 0.12.0 to 0.20.0.

Release notes

Sourced from mcp's releases.

v0.20.0

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)

v0.19.0

Added

  • Support Client ID Metadata Documents in OAuth client (#361)
  • Request offline_access scope when supported (#365)
  • Add size field to MCP::Resource per MCP specification (#393)

v0.18.0

Added

  • Support server-to-client ping per MCP specification (#358)

Changed

  • Warn on implicit stdio initialization (#338)
  • Cache Tool::Schema validation to avoid re-validating identical schemas (#363)

Fixed

  • Fix case-sensitive Accept header comparison (#359)

v0.17.0

Added

  • Add OAuth 2.1 client support for MCP authorization flow (#353)

Fixed

  • Validate MCP-Protocol-Version header in StreamableHTTPTransport (#347)
  • Reject duplicate initialize requests (#350)

... (truncated)

Changelog

Sourced from mcp's changelog.

[0.20.0] - 2026-06-14

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)

[0.19.0] - 2026-06-13

Added

  • Support Client ID Metadata Documents in OAuth client (#361)
  • Request offline_access scope when supported (#365)
  • Add size field to MCP::Resource per MCP specification (#393)

[0.18.0] - 2026-05-30

Added

  • Support server-to-client ping per MCP specification (#358)

Changed

  • Warn on implicit stdio initialization (#338)
  • Cache Tool::Schema validation to avoid re-validating identical schemas (#363)

Fixed

  • Fix case-sensitive Accept header comparison (#359)

[0.17.0] - 2026-05-19

Added

  • Add OAuth 2.1 client support for MCP authorization flow (#353)

... (truncated)

Commits
  • 23af995 Merge pull request #404 from koic/release_0_20_0
  • 4fb0049 Release 0.20.0
  • 3a163ad Merge pull request #403 from yuki3738/add_annotations_field_to_resource
  • 783eb63 Merge pull request #402 from koic/resource_not_found_error_data
  • 64219be Add annotations field to MCP::Resource and MCP::ResourceTemplate per MC...
  • d096b8a Standardize Resource Not Found Errors on -32602 with URI Data per SEP-2164
  • 2e5162a Merge pull request #373 from koic/add_logging_set_level_to_supported_methods_...
  • 8a709f6 Merge pull request #372 from koic/clarify_server_context_hash
  • 6929d52 Merge pull request #370 from koic/fix_exception_reporter_server_context
  • 3d7046a Merge pull request #392 from koic/fallback_missing_protocol_version_in_stream...
  • Additional commits viewable in compare view

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Bumps [mcp](https://github.com/modelcontextprotocol/ruby-sdk) from 0.12.0 to 0.20.0.
- [Release notes](https://github.com/modelcontextprotocol/ruby-sdk/releases)
- [Changelog](https://github.com/modelcontextprotocol/ruby-sdk/blob/main/CHANGELOG.md)
- [Commits](modelcontextprotocol/ruby-sdk@v0.12.0...v0.20.0)

---
updated-dependencies:
- dependency-name: mcp
  dependency-version: 0.20.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot dependabot Bot added dependencies Pull requests that update a dependency file ruby Pull requests that update ruby code labels Jun 17, 2026
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