Getting an API key

To use the API you need an API key, which identifies and authenticates your application.

1. Sign in to your FreeSign account.
2. Open the API or developer section of your account settings.
3. Generate a key and copy it somewhere safe.

Treat the key like a password:

• Never embed it in client-side code or commit it to a public repository.
• Store it in a server-side configuration or secret manager.
• Rotate it immediately if you suspect it has leaked.

Once you have a key, your application sends it with each request to authenticate. For what you can do from there, see the API overview.