What is Passage?

Passage lets your app securely connect a user's third‑party accounts and retrieve data through automated, permissioned workflows. You use your backend to create a short‑lived intent token, then a client SDK opens the Passage flow for the user. When data becomes available, your backend fetches it via the Passage API.

How Passage works

1. Backend authenticates with Passage using OAuth 2.0 Client Credentials to obtain an access token.
2. Backend creates an intent token via POST /intent-token for a given integration (e.g., Kindle) and requested products (e.g., history).
3. Client opens the Passage flow with the intent token using an SDK. The user completes the connection in a secure modal/fullscreen UI.
4. Passage sends webhook events (e.g., Connection.Updated) as the connection progresses. When status becomes data_available, your backend fetches data (e.g., GET /connections/{connectionId}/history).

Choose your SDK

Pick the SDK that matches your app stack:

• Capacitor: https://www.npmjs.com/package/@getpassage/capacitor
• React Native: https://www.npmjs.com/package/@getpassage/react-native
• React (Web): https://www.npmjs.com/package/@getpassage/react-js
• Expo: https://www.npmjs.com/package/@getpassage/expo
• Swift: https://cocoapods.org/pods/PassageSDK

Next steps

• Capacitor integration walkthrough: see Docs → “Passage Capacitor SDK Integration Guide”
• API reference (OpenAPI): go to the “API” tab or visit /api/public
• Hosted docs: https://docs.getpassage.ai/