API Flow

API Flow is a compact mobile API client for testing HTTP endpoints without a desktop.

• Send GET, POST, PUT, PATCH, DELETE, HEAD, and OPTIONS requests
• Add headers, query parameters, and raw request bodies
• Inspect response status, timing, headers, and body
• Save local request collections and recent history
• Use a reusable {{base_url}} environment variable
• Choose light, dark, or system appearance

API Flow has no accounts, ads, analytics, or developer-operated backend. Requests are only sent when you choose an endpoint and tap Send.

Fixed duplicate query parameters when resending saved requests. The User-Agent and privacy summary now always show the installed app version.