# Protocol — Feature Bundle

The CN protocol: whitepaper, FSM design, and thread API.

---

## Document Map

| Document | Scope |
|----------|-------|
| [WHITEPAPER.md](./WHITEPAPER.md) | CN protocol specification (v3.0.0) |
| [PROTOCOL.md](./PROTOCOL.md) | FSM design — state diagrams, transition tables |
| [THREAD-API.md](./THREAD-API.md) | Agent content API |
| [MESSAGE-PACKET-TRANSPORT.md](./MESSAGE-PACKET-TRANSPORT.md) | Fail-closed inbox materialization — packet-based transport (#150) |

---

## Reading Order

1. **[WHITEPAPER.md](./WHITEPAPER.md)** — the protocol spec
2. **[PROTOCOL.md](./PROTOCOL.md)** — FSM state machines in detail
3. **[THREAD-API.md](./THREAD-API.md)** — the content API
4. **[MESSAGE-PACKET-TRANSPORT.md](./MESSAGE-PACKET-TRANSPORT.md)** — packet-based inbox materialization design
