---
title: "Log a change"
method: POST
path: "/v1/projects/{projectId}/changes"
tags: ["Changes"]
---

# Log a change

`POST /v1/projects/{projectId}/changes`

## Request

- Base URL: `https://hootlens-api-368877148687.us-east1.run.app`
- URL: `https://hootlens-api-368877148687.us-east1.run.app/v1/projects/{projectId}/changes`
- Auth: HTTP bearer

Records that something on the site changed at a time, optionally for one page group. A marker made with a personal access token is recorded as made by an agent. At most 60 a minute.

Required token scopes are listed in x-hootlens-scopes. A signed-in person needs the matching permission on the site instead (the viewer and editor roles are presets of the permissions).

## Path parameters

- `projectId` string, required: An identifier: 1 to 80 letters, digits, underscores or hyphens.

## Request body

- ChangeInput
  - `title` string, required
  - `note` string
  - `pageGroup` string
  - `release` string
  - `at` integer
  - `source` string
  - `kind` 'standard' | 'measurement'
  - `commit` object
    - `sha` string, required
    - `url` string

## Response `201`

The new marker.

- object
  - `change` ChangeMarker, required
    - `id` string, required: An identifier: 1 to 80 letters, digits, underscores or hyphens.
    - `projectId` string, required: An identifier: 1 to 80 letters, digits, underscores or hyphens.
    - `at` integer, required: When the change went live, epoch milliseconds.
    - `title` string, required
    - `note` string
    - `pageGroup` string: Absent means the whole site.
    - `release` string
    - `createdBy` 'owner' | 'agent', required
    - `source` string: Free text such as claude-code. Starts with auto: for automatic detections.
    - `kind` 'standard' | 'measurement': measurement for a change that only changes how counting works; its impact report gives no verdict. Absent means standard.

## Other responses

- `400`: The request fields are invalid.
- `401`: The credential is missing, expired or revoked.
- `403`: The credential or the person's permissions on the site do not permit this action.
- `404`: The site, or the record inside it, does not exist or the caller is not a member (a non-member cannot tell the two apart).
- `429`: A rate limit or a per-site limit was reached.

---

[API](https://skmtc.dev/hootlens/apis/hoot-lens-api.md) · [All operations](https://skmtc.dev/hootlens/apis/hoot-lens-api/llms.txt) · [OpenAPI document](https://skmtc.dev/hootlens/apis/hoot-lens-api/revisions/f64f8dc7b84e?raw)