> ## 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.

# session.telemetry (notification)

> World → Agent latency telemetry, once per second in streaming sessions.

```json awp:session-telemetry theme={null}
{ "jsonrpc": "2.0", "method": "session.telemetry",
  "params": { "window_ms": 1000,
              "observation_latency_ns": { "count": 130, "p50": 8200000, "p95": 21500000, "max": 40100000 },
              "admission_latency_ns": { "count": 9, "p50": 1100000, "p95": 3900000 },
              "observation_to_action_ns": { "count": 9, "p50": 31000000, "p95": 58000000 },
              "channels": { "1": { "count": 30, "p50": 12400000, "p95": 27800000 },
                            "2": { "count": 100, "p50": 900000, "p95": 2100000 } } } }
```

<ParamField body="window_ms" type="integer" required>Window the statistics cover.</ParamField>
<ParamField body="observation_latency_ns" type="object">`{ count, p50, p95, max? }` of pipeline latency, `ts_send_ns − ts_mono_ns`, over every observation frame sent in the window.</ParamField>
<ParamField body="admission_latency_ns" type="object">Acknowledgement transmitted − `received_ts_mono_ns`, over every submission in the window.</ParamField>
<ParamField body="observation_to_action_ns" type="object">`received_ts_mono_ns − basis_ts_mono_ns`, over every submission in the window that carried a basis.</ParamField>
<ParamField body="command_latency_ns" type="object">World receipt − `ts_mono_ns`, over every command frame received in the window.</ParamField>
<ParamField body="channels" type="object">Pipeline latency keyed by decimal `channel_id`, for every observation channel that sent frames in the window.</ParamField>

Each quantity is present whenever at least one sample fell in the window (AWP-TIM-006). Definitions: [latency and staleness](/spec/semantics/timestamps-and-clocks#latency-and-staleness); the agent-side mirror is [obs.report](/api-reference/control/obs-report).