---
title: "PATCH /projects/{projectId}/briefs/{briefId}"
method: PATCH
path: "/projects/{projectId}/briefs/{briefId}"
---

# PATCH /projects/{projectId}/briefs/{briefId}

`PATCH /projects/{projectId}/briefs/{briefId}`

## Request

- Base URL: `https://api.caveman.so/api/v1`
- URL: `https://api.caveman.so/api/v1/projects/{projectId}/briefs/{briefId}`
- Auth: one of:
  - OAuth 2
    - Authorization code: `/api/v1/oauth/authorize`
    - Token URL: `/api/v1/oauth/token` scopes: `opportunity:write`
  - HTTP bearer
  - API key in cookie `cave_access`
  - API key in cookie `__Secure-cave_identity.session_token`

PATCH /api/v1/projects/{projectId}/briefs/{briefId} on the Caveman Cloud control plane. Requires the opportunity:write scope. Exposed to autonomous agents as the edit action of the caveman_briefs_write tool (write access). Rewrite a brief through the same write path people use (every claim cited, the version you read), move its status, assignee or priority, comment, and run its declared actions: mark done, dismiss, or prove it on recorded traffic (queues a replay whose result reads back as the brief's proof, always inferred). Fix is a person's action from their own session; your agent takes the fix itself by pulling the brief's fix packet and reporting back, which the brief shows as self-reported.

## Request body

- object
  - `expected_version` integer
  - `title` string
  - `summary_md` string
  - `body_md` string
  - `sources` object[]
    - `n` integer, required
    - `kind` 'finding' | 'evidence' | 'trace' | 'report' | 'query', required
    - `label` string, required
    - `href` string
    - `detail` string
  - `status` 'open' | 'in_progress' | 'done' | 'dismissed'
  - `priority` integer
  - `assignee_id` string, nullable

## Response `2XX`

Successful response. Exact status depends on synchronous or durable delivery outcome.

## Other responses

- `4XX`: Structured failure. `error.code` is stable; `error.request_id` is echoed in the x-cave-request-id header.
- `5XX`: Structured failure. `error.code` is stable; `error.request_id` is echoed in the x-cave-request-id header.

---

[API](https://skmtc.dev/caveman/apis/caveman-cloud-api.md) - [All operations](https://skmtc.dev/caveman/apis/caveman-cloud-api/llms.txt) - [OpenAPI document](https://skmtc.dev/caveman/apis/caveman-cloud-api/revisions/508312d01cfc?raw)