What should it contain?

The overview section must answer the following questions:

• What can I do with this API?
• Who is this API for?Provide a common business scenario where this can be used (if applicable)

Example:

The Forge platform uses the OAuth 2.0 protocol for authentication. A typical Forge API needs an av=cess to ken

• Obtain an access token from Forge.
• Refresh an access token (to keep it from expiring).