API Overview

Expand the API Overview panel on the left to see every endpoint with full details.

Base URL: https://api.grain.inc

Common conventions:

• Authentication via Bearer tokens (see Authentication & Idempotency).

• Content-Type: all request bodies are JSON (application/json).

• Currency: "USD" currently supported.

• Amounts: strings with two decimals (e.g., "10.00").

Endpoints:

• Merchants — retrieve merchant profile and supported payment methods.

• Payment Sessions — create and inspect payment sessions.

• Connect Wallet — associate a user wallet + stablecoin with a session.

• Funding Transaction — optionally record the funding transaction hash.

• Captures — move funds from OTW to merchant wallet (partial/final) and inspect captures.