---
title: "Check Watch"
method: POST
path: "/api/watch/{watch_id}/check"
---

# Check Watch

`POST /api/watch/{watch_id}/check`

## Request

- Base URL: `https://www.conceptio.app` (the document declares no server; this is the origin it was published from)
- URL: `https://www.conceptio.app/api/watch/{watch_id}/check`
- Auth: none declared

Recompute a watch's fingerprint and report whether anything changed.

Pull-driven (no daemon): an agent or cron calls this periodically. When
claimed, the stored fingerprint + doc_ids advance so a later check
compares against the NEW state. Returns the machine diff summary plus the
previous vs current fingerprint for the caller's verification.

## Path parameters

- `watch_id` integer, required

## Headers

- `authorization` string, nullable
- `x-license-key` string, nullable
- `x-principal` string, nullable
- `x-api-key` string, nullable

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/conceptio/apis/conceptio-open-knowledge-api.md) · [All operations](https://skmtc.dev/conceptio/apis/conceptio-open-knowledge-api/llms.txt) · [OpenAPI document](https://skmtc.dev/conceptio/apis/conceptio-open-knowledge-api/revisions/eb73efec13b4?raw)