---
title: "Record a Codewhale lifecycle outbox event"
method: POST
path: "/api/v1/sessions/{sessionId}/activity/codewhale"
tags: ["sessions"]
---

# Record a Codewhale lifecycle outbox event

`POST /api/v1/sessions/{sessionId}/activity/codewhale`

## Request

- Base URL: `http://127.0.0.1:3001`
- URL: `http://127.0.0.1:3001/api/v1/sessions/{sessionId}/activity/codewhale`
- Auth: none declared

## Path parameters

- `sessionId` string, required: Session identifier, e.g. project-1.

## Request body

- CodewhaleLifecycleWebhookRequest
  - `at` string, date-time
  - `event` CodewhaleLifecycleEvent, required
    - `created_at` string, date-time
    - `event` string, required
    - `item_id` string, nullable
    - `kind` 'session.started' | 'turn.started' | 'turn.completed' | 'turn.failed' | 'turn.interrupted' | 'turn.stalled' | 'session.ended' | 'subagent.spawned' | 'subagent.completed', required
    - `payload` unknown
    - `schema_version` integer, required
    - `seq` integer, required
    - `thread_id` string, required
    - `timestamp` string, date-time
    - `turn_id` string

## Response `200`

OK

- SetActivityResponse
  - `ok` boolean, required
  - `sessionId` string, required
  - `state` string, required

## Other responses

- `400`: Bad Request
- `404`: Not Found
- `500`: Internal Server Error
- `501`: Not Implemented
- `503`: Service Unavailable

## Changes

- **2026-10-21** `8f160e6183cd`: 5 info
  - removed the `agent_switch_saga` enum value from the `reporting_owner` response property for the response status `400`
  - removed the `agent_switch_saga` enum value from the `reporting_owner` response property for the response status `404`
  - removed the `agent_switch_saga` enum value from the `reporting_owner` response property for the response status `500`
  - removed the `agent_switch_saga` enum value from the `reporting_owner` response property for the response status `501`
  - …1 more
- **2026-10-09** `95795a3f8166`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/composiohq/apis/agent-orchestrator-http-daemon/changes/api/v1/sessions/:sessionId/activity/codewhale/post.md)

---

[API](https://skmtc.dev/composiohq/apis/agent-orchestrator-http-daemon.md) - [All operations](https://skmtc.dev/composiohq/apis/agent-orchestrator-http-daemon/llms.txt) - [OpenAPI document](https://skmtc.dev/composiohq/apis/agent-orchestrator-http-daemon/revisions/61d7efd08578?raw)