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chore: release v5.0.0 - #449

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chore: release v5.0.0#449
acp-release-bot[bot] wants to merge 1 commit into
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release-plz-2026-10-28T08-09-30Z

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🤖 New release

  • agent-client-protocol-derive: 3.6.0 -> 5.0.0
  • agent-client-protocol: 3.6.0 -> 5.0.0 (⚠ API breaking changes)
  • agent-client-protocol-polyfill: 3.6.0 -> 5.0.0 (✓ API compatible changes)
  • agent-client-protocol-rmcp: 4.0.6 -> 5.0.0 (⚠ API breaking changes)
  • agent-client-protocol-trace-viewer: 3.6.0 -> 5.0.0 (✓ API compatible changes)
  • agent-client-protocol-conductor: 3.6.0 -> 5.0.0 (⚠ API breaking changes)
  • agent-client-protocol-http: 3.6.0 -> 5.0.0 (⚠ API breaking changes)
  • agent-client-protocol-cookbook: 3.6.0 -> 5.0.0 (✓ API compatible changes)

⚠ agent-client-protocol breaking changes

--- failure enum_marked_non_exhaustive: enum marked #[non_exhaustive] ---

Description:
A public enum has been marked #[non_exhaustive]. Pattern-matching on it outside of its crate must now include a wildcard pattern like `_`, or it will fail to compile.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#attr-adding-non-exhaustive
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/enum_marked_non_exhaustive.ron

Failed in:
  enum TransportFrame in /tmp/.tmpNfDPco/rust-sdk/src/agent-client-protocol/src/jsonrpc.rs:107

--- failure enum_missing: pub enum removed or renamed ---

Description:
A publicly-visible enum cannot be imported by its prior path. A `pub use` may have been removed, or the enum itself may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/enum_missing.ron

Failed in:
  enum agent_client_protocol::TransportBatchEntry, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/jsonrpc.rs:119
  enum agent_client_protocol::SessionMessage, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/session.rs:1114

--- failure enum_variant_missing: pub enum variant removed or renamed ---

Description:
A publicly-visible enum has at least one variant that is no longer available under its prior name. It may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/enum_variant_missing.ron

Failed in:
  variant TransportFrame::Batch, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/jsonrpc.rs:107

--- failure function_missing: pub fn removed or renamed ---

Description:
A publicly-visible function cannot be imported by its prior path. A `pub use` may have been removed, or the function itself may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/function_missing.ron

Failed in:
  function agent_client_protocol::util::unsupported_protocol_version, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/util.rs:179

--- failure inherent_method_missing: pub method removed or renamed ---

Description:
A publicly-visible method or associated fn is no longer available under its prior name. It may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/inherent_method_missing.ron

Failed in:
  ConnectionTo::build_session, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/session.rs:154
  ConnectionTo::build_session_cwd, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/session.rs:164
  ConnectionTo::build_session_from, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/session.rs:175
  ConnectionTo::load_session, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/session.rs:190
  ConnectionTo::load_session_from, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/session.rs:203
  ConnectionTo::resume_session, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/session.rs:216
  ConnectionTo::resume_session_from, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/session.rs:229
  Agent::builder, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/role/acp.rs:340
  Agent::builder, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/role/acp.rs:340
  Proxy::builder, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/role/acp.rs:1505
  Proxy::builder, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/role/acp.rs:1505
  Client::builder, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/role/acp.rs:77
  Client::connect_with, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/role/acp.rs:115
  Client::builder, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/role/acp.rs:77
  Client::connect_with, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/role/acp.rs:115

--- failure method_requires_different_generic_type_params: method now requires a different number of generic type parameters ---

Description:
A method now requires a different number of generic type parameters than it used to. Uses of this method that supplied the previous number of generic types will be broken.
        ref: https://doc.rust-lang.org/reference/items/generics.html
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/method_requires_different_generic_type_params.ron

Failed in:
  agent_client_protocol::ConnectionTo::send_proxied_message takes 3 generic types instead of 2, in /tmp/.tmpNfDPco/rust-sdk/src/agent-client-protocol/src/jsonrpc.rs:3913
  agent_client_protocol::ConnectionTo::send_proxied_message_to takes 4 generic types instead of 3, in /tmp/.tmpNfDPco/rust-sdk/src/agent-client-protocol/src/jsonrpc.rs:3938
  agent_client_protocol::SentRequest::forward_response_to takes 1 generic types instead of 0, in /tmp/.tmpNfDPco/rust-sdk/src/agent-client-protocol/src/jsonrpc.rs:6669
  agent_client_protocol::SentRequest::on_receiving_ok_result takes 2 generic types instead of 1, in /tmp/.tmpNfDPco/rust-sdk/src/agent-client-protocol/src/jsonrpc.rs:6937
  agent_client_protocol::PreparedRequest::on_receiving_ok_result takes 2 generic types instead of 1, in /tmp/.tmpNfDPco/rust-sdk/src/agent-client-protocol/src/jsonrpc.rs:6092
  agent_client_protocol::PreparedRequest::forward_response_to takes 1 generic types instead of 0, in /tmp/.tmpNfDPco/rust-sdk/src/agent-client-protocol/src/jsonrpc.rs:6117

--- failure struct_missing: pub struct removed or renamed ---

Description:
A publicly-visible struct cannot be imported by its prior path. A `pub use` may have been removed, or the struct itself may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/struct_missing.ron

Failed in:
  struct agent_client_protocol::schema::InitializeProxyRequest, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/schema/proxy_protocol.rs:89
  struct agent_client_protocol::SessionBuilder, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/session.rs:660
  struct agent_client_protocol::Blocking, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/session.rs:134
  struct agent_client_protocol::ActiveSession, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/session.rs:1081
  struct agent_client_protocol::TransportBatch, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/jsonrpc.rs:112
  struct agent_client_protocol::NonBlocking, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/session.rs:139
  struct agent_client_protocol::RestoredSession, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/session.rs:599
  struct agent_client_protocol::RestoreSessionBuilder, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/session.rs:390

--- failure trait_method_missing: pub trait method removed or renamed ---

Description:
A trait method is no longer callable, and may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#trait-item-signature
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/trait_method_missing.ron

Failed in:
  method builder of trait Role, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/role.rs:43
  method builder of trait Role, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/role.rs:43

--- failure trait_missing: pub trait removed or renamed ---

Description:
A publicly-visible trait cannot be imported by its prior path. A `pub use` may have been removed, or the trait itself may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/trait_missing.ron

Failed in:
  trait agent_client_protocol::MetaCapability, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/capabilities.rs:31
  trait agent_client_protocol::SessionBlockState, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/session.rs:144
  trait agent_client_protocol::MetaCapabilityExt, previously in file /tmp/.tmpxO2jtE/agent-client-protocol/src/capabilities.rs:42

⚠ agent-client-protocol-rmcp breaking changes

--- failure struct_missing: pub struct removed or renamed ---

Description:
A publicly-visible struct cannot be imported by its prior path. A `pub use` may have been removed, or the struct itself may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/struct_missing.ron

Failed in:
  struct agent_client_protocol_rmcp::McpServerBuilder, previously in file /tmp/.tmpxO2jtE/agent-client-protocol-rmcp/src/builder.rs:52

--- failure trait_missing: pub trait removed or renamed ---

Description:
A publicly-visible trait cannot be imported by its prior path. A `pub use` may have been removed, or the trait itself may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/trait_missing.ron

Failed in:
  trait agent_client_protocol_rmcp::McpServerExt, previously in file /tmp/.tmpxO2jtE/agent-client-protocol-rmcp/src/lib.rs:64

⚠ agent-client-protocol-conductor breaking changes

--- failure trait_added_supertrait: non-sealed trait added new supertraits ---

Description:
A non-sealed trait added one or more supertraits, which breaks downstream implementations of the trait
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#generic-bounds-tighten
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/trait_added_supertrait.ron

Failed in:
  trait agent_client_protocol_conductor::ConductorHostRole gained Sealed in file /tmp/.tmpNfDPco/rust-sdk/src/agent-client-protocol-conductor/src/conductor.rs:1452

--- failure trait_method_added: pub trait method added ---

Description:
A non-sealed public trait added a new method without a default implementation, which breaks downstream implementations of the trait
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#trait-new-item-no-default
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/trait_method_added.ron

Failed in:
  trait method agent_client_protocol_conductor::ConductorHostRole::initialize_method in file /tmp/.tmpNfDPco/rust-sdk/src/agent-client-protocol-conductor/src/conductor.rs:1458
  trait method agent_client_protocol_conductor::ConductorHostRole::select_protocol_version in file /tmp/.tmpNfDPco/rust-sdk/src/agent-client-protocol-conductor/src/conductor.rs:1467
  trait method agent_client_protocol_conductor::ConductorHostRole::instantiate in file /tmp/.tmpNfDPco/rust-sdk/src/agent-client-protocol-conductor/src/conductor.rs:1475

--- failure trait_method_missing: pub trait method removed or renamed ---

Description:
A trait method is no longer callable, and may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#trait-item-signature
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/trait_method_missing.ron

Failed in:
  method initialize of trait ConductorHostRole, previously in file /tmp/.tmpxO2jtE/agent-client-protocol-conductor/src/conductor.rs:1450

--- failure trait_newly_sealed: pub trait became sealed ---

Description:
A publicly-visible trait became sealed, so downstream crates are no longer able to implement it
        ref: https://rust-lang.github.io/api-guidelines/future-proofing.html#sealed-traits-protect-against-downstream-implementations-c-sealed
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/trait_newly_sealed.ron

Failed in:
  trait agent_client_protocol_conductor::ConductorHostRole in file /tmp/.tmpNfDPco/rust-sdk/src/agent-client-protocol-conductor/src/conductor.rs:1452

⚠ agent-client-protocol-http breaking changes

--- failure inherent_method_missing: pub method removed or renamed ---

Description:
A publicly-visible method or associated fn is no longer available under its prior name. It may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/inherent_method_missing.ron

Failed in:
  HttpClient::with_client, previously in file /tmp/.tmpxO2jtE/agent-client-protocol-http/src/client.rs:163
  HttpClient::with_endpoint_and_client, previously in file /tmp/.tmpxO2jtE/agent-client-protocol-http/src/client.rs:178
Changelog

agent-client-protocol-derive

5.0.0 - 2026-10-30

Fixed

  • remove redundant license-file metadata (#448)

agent-client-protocol

5.0.0 - 2026-10-30

Added

  • (acp) [breaking] v1 connection type, SessionSetup, and the v5 migration guide (#472)
  • (acp) [breaking] version-neutral Builder::new and v1::schema / v2::schema (#470)
  • (rmcp) [breaking] move the rmcp integration behind a versioned rmcp_3 feature (#471)
  • (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)
  • (acp) negotiate proxy/initialize versions like initialize (#464)
  • (acp) [breaking] answer dropped request responders with an error (#462)
  • [breaking] breaking cleanups for the next major release (#461)
  • (acp) [breaking] rename proxy methods to proxy/initialize and proxy/successor (#460)
  • (acp) [breaking] keep v1 independent of unstable_protocol_v2; version-agnostic conductor and proxies (#459)
  • (acp) [breaking] remove JSON-RPC batch support (#454)
  • update to agent-client-protocol-schema 1.14.0 (#453)
  • (acp) expose protocol-v2 request IDs on request handles and responders (#451)

Fixed

  • (test) reject empty v2 prompts in Testy and simple_agent_v2 (#463)
  • (acp) return session/new errors from start_session (#428)
  • (acp) shut agent processes down gracefully (#457)
  • (acp) reject proxy MCP server names that collide with the client's (#456)
  • follow the remaining ACP schema 1.13 rules in Testy, examples, and docs (#452)
  • reject unadvertised v2 prompt content in Testy and the v2 example (#450)
  • remove redundant license-file metadata (#448)

Other

  • (acp) [breaking] v1 and v2 modules with versioned entry points (#469)

agent-client-protocol-polyfill

5.0.0 - 2026-10-30

Fixed

  • remove redundant license-file metadata (#448)

Other

  • (acp) [breaking] v1 and v2 modules with versioned entry points (#469)

agent-client-protocol-rmcp

5.0.0 - 2026-10-30

Added

  • (acp) [breaking] v1 connection type, SessionSetup, and the v5 migration guide (#472)
  • (acp) [breaking] version-neutral Builder::new and v1::schema / v2::schema (#470)
  • (rmcp) [breaking] move the rmcp integration behind a versioned rmcp_3 feature (#471)
  • (acp) [breaking] type request handle IDs by protocol version (#467)

Fixed

  • remove redundant license-file metadata (#448)

Other

  • (acp) [breaking] v1 and v2 modules with versioned entry points (#469)

agent-client-protocol-trace-viewer

5.0.0 - 2026-10-30

Fixed

  • remove redundant license-file metadata (#448)

agent-client-protocol-conductor

5.0.0 - 2026-10-30

Added

  • (acp) [breaking] v1 connection type, SessionSetup, and the v5 migration guide (#472)
  • (acp) [breaking] version-neutral Builder::new and v1::schema / v2::schema (#470)
  • (rmcp) [breaking] move the rmcp integration behind a versioned rmcp_3 feature (#471)
  • (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)
  • (acp) negotiate proxy/initialize versions like initialize (#464)
  • (acp) [breaking] rename proxy methods to proxy/initialize and proxy/successor (#460)
  • (acp) [breaking] keep v1 independent of unstable_protocol_v2; version-agnostic conductor and proxies (#459)
  • (acp) [breaking] remove JSON-RPC batch support (#454)

Fixed

  • (acp) reject proxy MCP server names that collide with the client's (#456)
  • remove redundant license-file metadata (#448)

Other

  • (acp) [breaking] v1 and v2 modules with versioned entry points (#469)

agent-client-protocol-http

5.0.0 - 2026-10-30

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

  • remove redundant license-file metadata (#448)

Other

  • (acp) [breaking] v1 and v2 modules with versioned entry points (#469)

agent-client-protocol-cookbook

5.0.0 - 2026-10-30

Added

  • (acp) [breaking] v1 connection type, SessionSetup, and the v5 migration guide (#472)
  • (acp) [breaking] version-neutral Builder::new and v1::schema / v2::schema (#470)
  • (rmcp) [breaking] move the rmcp integration behind a versioned rmcp_3 feature (#471)
  • (acp) [breaking] type request handle IDs by protocol version (#467)

Fixed

  • follow the remaining ACP schema 1.13 rules in Testy, examples, and docs (#452)
  • remove redundant license-file metadata (#448)

Other

  • (acp) [breaking] v1 and v2 modules with versioned entry points (#469)

This PR was generated with release-plz.

@acp-release-bot
acp-release-bot Bot force-pushed the release-plz-2026-10-28T08-09-30Z branch 12 times, most recently from d57633e to d7e7539 Compare October 30, 2026 18:02
@acp-release-bot acp-release-bot Bot changed the title chore: release chore: release v4.0.7 Oct 30, 2026
@acp-release-bot
acp-release-bot Bot force-pushed the release-plz-2026-10-28T08-09-30Z branch 7 times, most recently from 51fb8ba to 310c72c Compare October 30, 2026 21:16
@acp-release-bot acp-release-bot Bot changed the title chore: release v4.0.7 chore: release v5.0.0 Oct 30, 2026
@acp-release-bot
acp-release-bot Bot force-pushed the release-plz-2026-10-28T08-09-30Z branch 2 times, most recently from 93680cb to 0f3a38f Compare October 30, 2026 22:33
@acp-release-bot
acp-release-bot Bot force-pushed the release-plz-2026-10-28T08-09-30Z branch from 0f3a38f to 379bbf3 Compare October 30, 2026 22:56

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