[acp-release-bot]

🤖 New release

• agent-client-protocol-derive: 5.2.0 -> 5.3.0
• agent-client-protocol: 5.2.0 -> 5.3.0 (✓ API compatible changes)
• agent-client-protocol-polyfill: 5.2.0 -> 5.3.0
• agent-client-protocol-rmcp: 5.2.0 -> 5.3.0 (✓ API compatible changes)
• agent-client-protocol-trace-viewer: 5.2.0 -> 5.3.0
• agent-client-protocol-conductor: 5.2.0 -> 5.3.0 (✓ API compatible changes)
• agent-client-protocol-http: 5.2.0 -> 5.3.0
• agent-client-protocol-cookbook: 5.2.0 -> 5.3.0 (✓ API compatible changes)

Changelog

agent-client-protocol-derive

5.0.0 - 2026-11-02

Fixed

• (acp) [breaking] tighten the root connection and builder surface for multi-version use (#477)
• (acp) [breaking] version-neutral wire envelopes and extensible proxy types (#478)
• remove redundant license-file metadata (#448)

Other

• prepare the 5.0 release (migration guide, stability policy, version pins) (#479)

agent-client-protocol

5.3.0 - 2026-11-14

Added

• (acp) adopt schema 1.18.0 with skills, prompt suggestions and speed category (#499)

agent-client-protocol-polyfill

5.0.0 - 2026-11-02

Added

• (acp) [breaking] adopt schema 1.15.0 and its proxy-chain types (#480)

Fixed

• (acp) [breaking] tighten the root connection and builder surface for multi-version use (#477)
• (conductor) [breaking] narrow the conductor API and fix multi-version chains (#475)
• remove redundant license-file metadata (#448)

Other

• (acp) [breaking] reach each protocol version's schema only through v1::schema / v2::schema (#481)
• prepare the 5.0 release (migration guide, stability policy, version pins) (#479)
• (acp) [breaking] v1 and v2 modules with versioned entry points (#469)

agent-client-protocol-rmcp

5.3.0 - 2026-11-14

Other

• fix Cargo 1.100's unused dependency warnings (#500)

agent-client-protocol-trace-viewer

5.1.0 - 2026-11-09

Other

• update Cargo.lock dependencies

agent-client-protocol-conductor

5.3.0 - 2026-11-14

Added

• (acp) adopt schema 1.18.0 with skills, prompt suggestions and speed category (#499)

agent-client-protocol-http

5.0.0 - 2026-11-02

Added

• (acp) [breaking] type request handle IDs by protocol version (#467)
• (acp) [breaking] version-neutral raw JSON-RPC request IDs (#466)
• (acp) [breaking] version-neutral SDK Error with conversions to v1 and v2 schema errors (#465)
• [breaking] breaking cleanups for the next major release (#461)
• (acp) [breaking] rename proxy methods to proxy/initialize and proxy/successor (#460)
• (acp) [breaking] remove JSON-RPC batch support (#454)

Fixed

• (http) only open session streams for sessions the connection knows (#483)
• (acp) [breaking] tighten the root connection and builder surface for multi-version use (#477)
• [breaking] narrow transport and MCP APIs and fix rmcp integration issues (#476)
• remove redundant license-file metadata (#448)

Other

• (acp) [breaking] reach each protocol version's schema only through v1::schema / v2::schema (#481)
• prepare the 5.0 release (migration guide, stability policy, version pins) (#479)
• (acp) [breaking] v1 and v2 modules with versioned entry points (#469)

agent-client-protocol-cookbook

5.3.0 - 2026-11-14

Other

• fix Cargo 1.100's unused dependency warnings (#500)

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