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benbrandt merged 2 commits into from
Jul 23, 2026
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chore: release #270

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a420176
chore: release
acp-release-bot[bot] Jul 23, 2026
1cbfb5a
docs: clarify 2.0 release notes
benbrandt Jul 23, 2026
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73 changes: 37 additions & 36 deletions Cargo.lock
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14 changes: 7 additions & 7 deletions Cargo.toml
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Expand Up @@ -27,14 +27,14 @@ homepage = "https://github.com/agentclientprotocol/rust-sdk"

[workspace.dependencies]
# Internal crates
agent-client-protocol = { path = "src/agent-client-protocol", version = "1.3.0" }
agent-client-protocol-conductor = { path = "src/agent-client-protocol-conductor", version = "1.3.0" }
agent-client-protocol-derive = { path = "src/agent-client-protocol-derive", version = "1.3.0" }
agent-client-protocol-http = { path = "src/agent-client-protocol-http", version = "1.3.0" }
agent-client-protocol-polyfill = { path = "src/agent-client-protocol-polyfill", version = "1.3.0" }
agent-client-protocol-rmcp = { path = "src/agent-client-protocol-rmcp", version = "2.0.1" }
agent-client-protocol = { path = "src/agent-client-protocol", version = "2.0.0" }
agent-client-protocol-conductor = { path = "src/agent-client-protocol-conductor", version = "2.0.0" }
agent-client-protocol-derive = { path = "src/agent-client-protocol-derive", version = "2.0.0" }
agent-client-protocol-http = { path = "src/agent-client-protocol-http", version = "2.0.0" }
agent-client-protocol-polyfill = { path = "src/agent-client-protocol-polyfill", version = "2.0.0" }
agent-client-protocol-rmcp = { path = "src/agent-client-protocol-rmcp", version = "3.0.0" }
agent-client-protocol-test = { path = "src/agent-client-protocol-test" }
agent-client-protocol-trace-viewer = { path = "src/agent-client-protocol-trace-viewer", version = "1.3.0" }
agent-client-protocol-trace-viewer = { path = "src/agent-client-protocol-trace-viewer", version = "2.0.0" }
yopo = { package = "agent-client-protocol-yopo", path = "src/yopo" }

# Protocol
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13 changes: 8 additions & 5 deletions md/migration_v2.0.md
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Expand Up @@ -7,12 +7,15 @@ explicit, and gives `AcpAgent` an SDK-owned process-launch configuration instead
wire-schema type. It also replaces the SDK-local MCP-over-ACP wire extension with the shared
schema's opt-in native transport.

## Compatible crate versions
## Coordinated crate versions

Most published workspace crates move to the 2.x version family together. The rmcp integration
moves to 3.x because both `agent-client-protocol` and `rmcp` are public dependencies in its API:
Most published workspace crates move to the 2.x version family together. Crates whose public APIs
expose core SDK types must use the matching major release; the trace viewer and cookbook are
version-aligned as part of the coordinated release but do not impose that public dependency
constraint. The rmcp integration moves to 3.x because both `agent-client-protocol` and `rmcp` are
public dependencies in its API:

| Crate | Version compatible with `agent-client-protocol` 2.x |
| Crate | Coordinated release |
| --- | --- |
| `agent-client-protocol` | 2.x |
| `agent-client-protocol-derive` | 2.x |
Expand Down Expand Up @@ -245,7 +248,7 @@ use:
- `McpServer::Acp(McpServerAcp { name, server_id, .. })` in session setup requests;
- `mcp/connect` with `serverId`, returning a distinct `connectionId`;
- `mcp/message` requests and notifications keyed by that connection ID; and
- an `mcp/disconnect` request with an empty response.
- a request/response `mcp/disconnect` exchange.

The low-level SDK-local `McpConnectRequest`, `McpConnectResponse`, `McpOverAcpMessage`, and
`McpDisconnectNotification` types were removed. Use the feature-gated schema types instead:
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35 changes: 25 additions & 10 deletions src/agent-client-protocol-conductor/CHANGELOG.md
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Expand Up @@ -7,18 +7,33 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0

## [Unreleased]

### Curated release notes
## [2.0.0](https://github.com/agentclientprotocol/rust-sdk/compare/agent-client-protocol-conductor-v1.3.0...agent-client-protocol-conductor-v2.0.0) - 2026-07-23

- **Breaking change:** Upgrade to `agent-client-protocol` 2.x. Conductor components and the core
### Breaking changes

- Upgrade to `agent-client-protocol` 2.x. Conductor components and the core
handlers/types they expose must be migrated together.
- **Breaking change:** Rename the public `ConductorResponder` background task to
`ConductorRunner`, matching the core runner API it implements.
- **Changed:** Enable the opt-in native MCP-over-ACP schema so tracing recognizes `mcp/message`.
HTTP adaptation remains an explicit `agent-client-protocol-polyfill` proxy rather than
conductor behavior.
- **Fixed:** Preserve JSON-RPC batch framing when conductor tracing is enabled.
- **Documentation:** Remove references to the retired MCP bridge CLI mode and
`serve()` API.
- Rename the public `ConductorResponder` background task to `ConductorRunner`, matching the core
runner API it implements. ([#277](https://github.com/agentclientprotocol/rust-sdk/pull/277))

See the [core 2.0 migration guide](https://agentclientprotocol.github.io/rust-sdk/migration_v2.0.html)
for the shared API changes.

### Changed

- Enable the core SDK's draft native MCP-over-ACP support so traces classify `mcp/message`.
HTTP translation remains an explicit `agent-client-protocol-polyfill` proxy.
([#281](https://github.com/agentclientprotocol/rust-sdk/pull/281))

### Fixed

- Preserve JSON-RPC batch framing when conductor tracing is enabled.
([#275](https://github.com/agentclientprotocol/rust-sdk/pull/275))

### Documentation

- Update examples for the current conductor and RMCP APIs, removing references to the retired MCP
bridge CLI mode and `serve()` API. ([#287](https://github.com/agentclientprotocol/rust-sdk/pull/287))

## [1.3.0](https://github.com/agentclientprotocol/rust-sdk/compare/agent-client-protocol-conductor-v1.2.0...agent-client-protocol-conductor-v1.3.0) - 2026-07-20

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2 changes: 1 addition & 1 deletion src/agent-client-protocol-conductor/Cargo.toml
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@@ -1,6 +1,6 @@
[package]
name = "agent-client-protocol-conductor"
version = "1.3.0"
version = "2.0.0"
edition.workspace = true
rust-version.workspace = true
authors.workspace = true
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11 changes: 7 additions & 4 deletions src/agent-client-protocol-cookbook/CHANGELOG.md
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Expand Up @@ -7,11 +7,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0

## [Unreleased]

### Curated release notes
## [2.0.0](https://github.com/agentclientprotocol/rust-sdk/compare/agent-client-protocol-cookbook-v1.3.0...agent-client-protocol-cookbook-v2.0.0) - 2026-07-23

- **Changed:** Align the cookbook release and examples with `agent-client-protocol` 2.x.
- **Documentation:** Update permission, streaming, MCP server, and conductor examples
for the 2.0 APIs.
### Changed

- Update the cookbook for `agent-client-protocol` 2.x, including notification handling, ordered
response callbacks, permission and streaming flows, feature-gated native MCP-over-ACP, and
current conductor APIs. See the
[2.0 migration guide](https://agentclientprotocol.github.io/rust-sdk/migration_v2.0.html).

## [1.2.0](https://github.com/agentclientprotocol/rust-sdk/compare/agent-client-protocol-cookbook-v1.1.0...agent-client-protocol-cookbook-v1.2.0) - 2026-07-07

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2 changes: 1 addition & 1 deletion src/agent-client-protocol-cookbook/Cargo.toml
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@@ -1,6 +1,6 @@
[package]
name = "agent-client-protocol-cookbook"
version = "1.3.0"
version = "2.0.0"
edition.workspace = true
rust-version.workspace = true
authors.workspace = true
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