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Bump rmcp from 2.2.0 to 3.0.0 - #58

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dependabot/cargo/rmcp-3.0.0
Aug 1, 2026
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Bump rmcp from 2.2.0 to 3.0.0#58
avifenesh merged 3 commits into
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dependabot/cargo/rmcp-3.0.0

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Bumps rmcp from 2.2.0 to 3.0.0.

Release notes

Sourced from rmcp's releases.

rmcp-macros-v3.0.0

Other

  • release stable 3.0.0

rmcp-v3.0.0

RMCP 3.0 adds support for MCP 2026-07-28. Review the protocol key changes and the RMCP 3.0 migration guide before upgrading from 2.x.

Breaking changes

  • Sessionless Streamable HTTP: MCP 2026-07-28 removes protocol-level sessions: no Mcp-Session-Id, standalone GET stream, DELETE-based session termination, or Last-Event-ID resumption. RMCP creates a fresh handler per request, so persistent state must live outside the handler. stateful_mode is renamed to legacy_session_mode and now only controls older protocol versions; custom SSE clients must also accept an optional session ID.
  • Stateless lifecycle and discovery: the 2026-07-28 protocol removes initialize/notifications/initialized; each request carries the protocol version and client capabilities in _meta, and servers expose server/discover. RMCP clients opt into this lifecycle with serve_with_lifecycle and ClientLifecycleMode::Discover or Auto; the existing serve() path remains available for legacy initialization.
  • Subscriptions and removed methods: subscriptions/listen replaces the standalone GET stream and resources/subscribe/resources/unsubscribe. ping, logging/setLevel, and notifications/roots/list_changed are unavailable under 2026-07-28; RMCP retains their APIs for legacy protocol sessions.
  • Multi Round-Trip Requests and result types: ServerHandler::call_tool, get_prompt, and read_resource now return MRTR-aware response enums. Manual handler implementations and exhaustive ServerResult matches must handle InputRequiredResult, and result models carry an optional result_type for legacy wire compatibility.
  • Tasks: the experimental core tasks API is replaced by the io.modelcontextprotocol/tasks extension, including new task handlers, methods, and TaskManager APIs.
  • Rust model types: metadata is split into MetaObject, RequestMetaObject, and NotificationMetaObject; Annotations::last_modified is now Option<String>; and tool structured content accepts any serde_json::Value.
  • OAuth: authorization startup is consolidated around AuthorizationRequest; metadata discovery is renamed to resolve_metadata and returns provenance; and custom OAuth HTTP errors are now boxed source errors.
  • Compatibility: APIs deprecated before 3.0 have been removed, and the minimum supported Rust version is now 1.88.

What's Changed

... (truncated)

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Bumps [rmcp](https://github.com/modelcontextprotocol/rust-sdk) from 2.2.0 to 3.0.0.
- [Release notes](https://github.com/modelcontextprotocol/rust-sdk/releases)
- [Changelog](https://github.com/modelcontextprotocol/rust-sdk/blob/main/release-plz.toml)
- [Commits](modelcontextprotocol/rust-sdk@rmcp-v2.2.0...rmcp-v3.0.0)

---
updated-dependencies:
- dependency-name: rmcp
  dependency-version: 3.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot dependabot Bot added dependencies Pull requests that update a dependency file rust Pull requests that update rust code labels Aug 1, 2026
Copilot AI review requested due to automatic review settings August 1, 2026 11:08
@dependabot dependabot Bot added dependencies Pull requests that update a dependency file rust Pull requests that update rust code labels Aug 1, 2026

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Pull request overview

Note

Copilot could not run the full agentic suite for this review because it was automatically requested on a bot-authored pull request. Request a review from Copilot under Reviewers to retry with the full agentic suite. Improved support for bot-authored pull requests is coming soon.

Updates the rmcp Rust dependency to a new major version.

Changes:

  • Bumped rmcp from 2.2.0 to 3.0.0 (retaining the transport-io feature)

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Comment thread Cargo.toml
Copilot AI review requested due to automatic review settings August 1, 2026 14:25

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Copilot was unable to review this pull request because the user who requested the review has reached their quota limit.

Copilot AI review requested due to automatic review settings August 1, 2026 14:44

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Copilot was unable to review this pull request because the user who requested the review has reached their quota limit.

@avifenesh
avifenesh merged commit 21da094 into main Aug 1, 2026
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@dependabot
dependabot Bot deleted the dependabot/cargo/rmcp-3.0.0 branch August 1, 2026 14:57
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