Skip to main content
This page covers authentication for the legacy Formcarry API. For new integrations, see v1 Authentication.
The legacy API authenticates every request with an API key sent in the api_key header.

​
Get your API key

  1. Open your Formcarry dashboard.
  2. Go to Settings → API Keys.
  3. Copy your key.

​
Send the key

Add the api_key header to every request:
Treat API keys like passwords. Do not commit them to source control or expose them in client-side code.

​
Errors

  • 401 Unauthorized — the api_key header is missing or the key is invalid.
  • 403 Forbidden — the key does not have access to the requested form.