> ## Documentation Index
> Fetch the complete documentation index at: https://www.agentworldprotocol.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Stream negotiation

> How frame channels are mapped onto connections.

`session.ready` lists `stream_endpoints`, ordered by world preference; each names the binding, how to reach it, and the channels it carries:

```json theme={null}
{ "stream_endpoints": [
  { "binding": "webtransport", "url": "https://127.0.0.1:8711/stream", "channels": [1, 2] },
  { "binding": "webrtc", "signaling": "ws://127.0.0.1:8710/rtc", "channels": [1, 2] },
  { "binding": "ws", "url": "ws://127.0.0.1:8710/stream?token=…", "channels": [1, 2, 3] },
  { "binding": "inline" } ] }
```

The agent connects to the first binding it supports; `inline` is always last and always available (AWP-TRN-004). Stream connections authenticate with the session token (AWP-SEC-004) and are re-established from the re-issued endpoints after `session.resume` (AWP-TRN-008).

| Binding        | Transport                   | Independent flow control per channel |
| -------------- | --------------------------- | ------------------------------------ |
| `inline`       | control connection          | no                                   |
| `ws`           | WebSocket binary messages   | no                                   |
| `grpc`         | HTTP/2 streams              | no                                   |
| `webrtc`       | data channels               | yes                                  |
| `webtransport` | QUIC streams and datagrams  | yes                                  |
| `shm`          | POSIX shared memory (local) | yes                                  |

On a binding without independent flow control, a `latest-wins` channel is delivered without transit loss and the sender holds at most one undelivered frame per channel (AWP-TRN-009). Profiles that stream sensors next to safety-critical control — realtime A/V and robotics — require a binding from the lower three rows for those channels (AWP-AV-001, AWP-ROB-006).