Chain

Chain API

Chain's unified REST API for stablecoin payments (funding, payouts, payees), card issuing, wallets, and a double-entry ledger. Bearer API-key auth with sandbox and live key prefixes (sk_sandbox_ / sk_live_) and an X-Idempotency-Key header for safe retries.

GitHub

Documentation

📖
Documentation
https://chain.com/documentation
📖
Authentication
https://chain.com/documentation/authentication

Other Resources

🔗
Webhooks
https://chain.com/documentation/webhooks
🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/chain/refs/heads/main/apis.yml

API entry from apis.yml

apis.yml Raw ↑ 
name: Chain API
description: Chain's unified REST API for stablecoin payments (funding, payouts, payees), card issuing,
  wallets, and a double-entry ledger. Bearer API-key auth with sandbox and live key prefixes (sk_sandbox_
  / sk_live_) and an X-Idempotency-Key header for safe retries.
humanURL: https://chain.com/documentation
baseURL: https://api.chain.com/v1
properties:
- type: Documentation
  url: https://chain.com/documentation
- type: Authentication
  url: https://chain.com/documentation/authentication
- type: Webhooks
  url: https://chain.com/documentation/webhooks