Quick Entry
These entry cards cover the full merchant documentation path from onboarding and payments to OTC, convert, payout, and institution capabilities. Start with Overview, Quickstart, and Merchant Access, then continue into the product line you need.
Overview
Review the documentation structure, integration prerequisites, base URL, credentials, and reading order.
Quickstart
Run the first signing, order creation, callback, and order confirmation flow as quickly as possible.
Merchant Access
Check app creation, credential retrieval, callback setup, and pre-go-live requirements.
Authentication
Review signing, request headers, callback verification, and core security rules.
Notification
Review callback handling rules, event types, terminal-state judgment, and processing order.
Balance
See account balance, fees, fund records, and reconciliation guidance.
Reconciliation
Review collection/payout order list pulling, end-of-day reconciliation, and discrepancy investigation.
Payment
Cover order payment, hosted checkout, address payment, web payment, and related callbacks.
OTC
Review fiat on-ramp and off-ramp quotes, order creation, confirmation, queries, and callbacks.
Convert
Review balance-based conversion, quote preview, order placement, and rate lookup.
Payout
Review crypto withdrawals and fiat payouts, including initiation, queries, statuses, and callbacks.
Gift Card
Review gift card creation, templates, queries, and balance usage scenarios.
Subscription
Review products, plans, subscription orders, deductions, and related notifications.
x402
Review the GatePay integration path for AI Agent and HTTP 402 payment scenarios.
Institution
Review sub-accounts, charge, transfer, and the institution-side merchant APIs.
Merchant MCP
Review Merchant MCP capabilities, target scenarios, and integration notes.
API Reference
Browse the full endpoint catalog, field definitions, and response structures by product module.