A synchronized, multi-client state protocol for AI agent sessions.

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The Agent Host Protocol (AHP) defines how a portable, standalone sessions server communicates with its clients. Multiple clients can connect to the server and see a synchronized view of AI agent sessions through immutable state, pure reducers, and write-ahead reconciliation.

• Swift — Add https://github.com/microsoft/agent-host-protocol as a Swift Package Manager dependency to use the AgentHostProtocol types/reducers library or the AgentHostProtocolClient single-host and multi-host client library. See the Swift package README and clients/swift/ for the example iOS client. The Package.swift manifest lives at the repository root because SwiftPM only resolves manifests at the root of a remote git repo; the actual Swift sources live under clients/swift/AgentHostProtocol/.
• Rust — See clients/rust/ for the ahp, ahp-types, and ahp-ws crates.
• AHPX — A command-line and Node.js client for connecting to AHP servers, managing sessions, and sending prompts.
• VS Code — VS Code includes Agent Sessions client code for working with AHP hosts.

• VS Code agent host — The reference AHP server implementation. Start in src/vs/platform/agentHost/node/ when browsing the repository.

For consumers that need to talk to two or more hosts at once, the Rust SDK ships a MultiHostClient abstraction in ahp::hosts and the Swift SDK ships MultiHostClient in AgentHostProtocolClient. Single-host consumers use the same API via MultiHostClient::single in Rust or MultiHostClient.single(...) in Swift. See Connecting to Multiple Hosts for the design and surface.

# Install dependencies
npm install

# Start local dev server
npm run docs:dev

# Build for production
npm run docs:build

# Preview production build
npm run docs:preview

MIT