# GET /api/v2/checkins/{checkin}

Read a checkin

- MCP id: checkins.show
- Scope: api:read:checkins
- Permission: checkins::read
- Rate cost: 1 unit, read bucket.
- Cache-Control: private, no-store

Returns one checkin.

The summary and detail views are identical on this resource: every field is small enough for a list row. A checkin belonging to another employee is `404` unless the caller holds `checkins::read`; the row is invisible, so its existence stays invisible. `user` renders as an `{"id": N}` reference; `?include=user` expands it, and that expansion additionally requires `users::read` and a token scope covering the users prefix.

## Parameters
- checkin (integer, path): The Checkin's numeric id.
- view (string, optional): Which field set to render.
- X-Request-Id (header, optional): A correlation id of your own. It is recorded in our logs next to the server's request id but never returned: the response header always carries the server's id. A value that does not match the pattern is discarded silently, never rejected.
- If-None-Match (header, optional): The ETag a read is conditional on. A match is answered 304 with no body.

## Response 200
- id (integer, required): Unique identifier.
- user_id (integer, required, server-assigned): Employee this checkin belongs to. Assigned from the authenticated user on create and never writable.
- user (Ref or UserSummary, required): The employee this checkin belongs to. Expanding it with `?include=user` additionally requires the `users::read` permission and a token scope covering the users prefix.
- checked_in_at (timestamp (YYYY-MM-DDThh:mm:ssZ), required): When the employee clocked in.
- checked_out_at (timestamp (YYYY-MM-DDThh:mm:ssZ) or null, required): When the employee clocked out, or `null` while the checkin is still open. A `null` value marks the checkin plnnrly shows as active.
- created_at (timestamp (YYYY-MM-DDThh:mm:ssZ), required): Creation timestamp.
- updated_at (timestamp (YYYY-MM-DDThh:mm:ssZ), required): Last-write timestamp; use for incremental sync.
- links (CheckinLinks, required)
  - self (url, required): The canonical URI of this record.

## Errors
- 403 forbidden-by-policy | insufficient-permission | insufficient-token-scope: Forbidden.
- 304 : Not modified.
- 400 idempotency-key-required | invalid-cursor | invalid-query-parameter | malformed-request | unsupported-parameter: Bad request.
- 401 token-expired | unauthenticated: Unauthenticated.
- 404 endpoint-not-found | resource-not-found: Not found.
- 406 not-acceptable: Not acceptable.
- 429 rate-limit-exceeded: Too many requests.
- 500 internal-error: Server error.
- 503 tenant-unavailable: Service unavailable.

## Example
```bash
curl -G \
  'https://<your-url>/api/v2/checkins/1' \
  --data-urlencode 'include=user' \
  -H 'Authorization: Bearer <token>' \
  -H 'Accept: application/json'
```