car-proto

JSON-RPC 2.0 protocol types for Common Agent Runtime client-server communication.

What it does

Shared serde-defined types used by both car-server-core (server) and any Rust client. Single source of truth for request / response / notification shapes so the server and clients can't drift.

The protocol is bidirectional over WebSocket:

• Client → Server — session.init, tools.register, proposal.submit, verify, etc.
• Server → Client (callback) — tools.execute (awaits a response)
• Server → Client (notification) — host.event, voice.event (no response expected)

Where it fits

If you're building a Rust WebSocket client to talk to car-server, depend on this crate to get type-safe request/response handling. For other languages, the wire format is documented in docs/websocket-protocol.md — reach for raw JSON.