Owners and Admins on Scale create API keys in Settings, API and MCP. A key is shown once, is stored hashed, can be read-only or read and write, and can expire. A key acts as the person who made it. If that person leaves or stops being an Admin, the key stops working.
Rotate gives you a new key right away. The old key keeps working for 24 hours so you can switch without downtime.
The full API is described in openapi.json. Send Authorization: Bearer <key>.
Scale includes 100,000 calls a month. Each response shows what is left in the X-Quota-Remaining header. When you run out, calls return a 429 error that says so; nothing is cut off silently. Each organization can make up to 600 calls a minute. Every call is written to your audit log.