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Docs · API keys

API keys.

The CLI and the MCP server sign in to your account with an API key. Keys come with every plan, free included.

Make a key

  1. Sign in and open Developers in the sidebar.
  2. Name the key after where it will live, like “Laptop” or “GitHub Actions”, and create it.
  3. Copy it straight away. It starts with act_ and is shown only once.

Use it

Set it as an environment variable, and the CLI and MCP server pick it up:

Terminal
export ACTUITY_API_KEY=act_...

Or pass it once with --api-key. For CI, store it as a secret; see CI checks.

Keep it safe

  • A key acts as you: it can scan, read your fixes and use your plan’s agent analyses.
  • It can’t change your plan or billing, make other keys, delete your account or approve a site for agent analyses.
  • Don’t commit it to a repository or paste it in a shared file.
  • If one leaks, revoke it under Developers. It stops working at once.

AI apps like claude.ai and ChatGPT don’t need a key: they sign in with the connector instead.