# Open doors

2 operations.

Calls that need no key — the health check and the key exchange.

## Operations

| Operation | Kind | What it does |
| --- | --- | --- |
| [exchangeApiKey](/reference/open-doors/exchangeApiKey/) | mutation | An integration’s sign-in — it exchanges its API key secret for a working session. |
| [health](/reference/open-doors/health/) | query | Is the service alive — the plainest possible check. Reads nothing of yours. |