52 lines
2.0 KiB
Markdown
52 lines
2.0 KiB
Markdown
---
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summary: "Agent loop lifecycle, streams, and wait semantics"
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read_when:
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- You need an exact walkthrough of the agent loop or lifecycle events
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---
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# Agent Loop (Clawdbot)
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Short, exact flow of one agent run.
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## Entry points
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- Gateway RPC: `agent` and `agent.wait`.
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- CLI: `agent` command.
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## High-level flow
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1) `agent` RPC validates params, resolves session (sessionKey/sessionId), persists session metadata, returns `{ runId, acceptedAt }` immediately.
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2) `agentCommand` runs the agent:
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- resolves model + thinking/verbose defaults
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- loads skills snapshot
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- calls `runEmbeddedPiAgent` (pi-agent-core runtime)
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- emits **lifecycle end/error** if the embedded loop does not emit one
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3) `runEmbeddedPiAgent`:
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- builds `AgentSession` and subscribes to pi events
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- streams assistant deltas + tool events
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- enforces timeout -> aborts run if exceeded
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- returns payloads + usage metadata
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4) `subscribeEmbeddedPiSession` bridges pi-agent-core events to Clawdbot `agent` stream:
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- tool events => `stream: "tool"`
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- assistant deltas => `stream: "assistant"`
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- lifecycle events => `stream: "lifecycle"` (`phase: "start" | "end" | "error"`)
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5) `agent.wait` uses `waitForAgentJob`:
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- waits for **lifecycle end/error** for `runId`
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- returns `{ status: ok|error|timeout, startedAt, endedAt, error? }`
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## Event streams (today)
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- `lifecycle`: emitted by `subscribeEmbeddedPiSession` (and as a fallback by `agentCommand`)
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- `assistant`: streamed deltas from pi-agent-core
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- `tool`: streamed tool events from pi-agent-core
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## Chat provider handling
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- Assistant deltas are buffered into chat `delta` messages.
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- A chat `final` is emitted on **lifecycle end/error**.
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## Timeouts
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- `agent.wait` default: 30s (just the wait). `timeoutMs` param overrides.
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- Agent runtime: `agent.timeoutSeconds` default 600s; enforced in `runEmbeddedPiAgent` abort timer.
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## Where things can end early
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- Agent timeout (abort)
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- AbortSignal (cancel)
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- Gateway disconnect or RPC timeout
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- `agent.wait` timeout (wait-only, does not stop agent)
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