# Chain API

**Canonical:** https://apis.io/apis/chain/chain-api/  
**Provider:** Chain — https://apis.io/providers/chain/  
**Base URL:** https://api.chain.com/v1  
**Documentation:** https://chain.com/documentation

Chain API is published by [Chain](https://apis.io/providers/chain/) on the [APIs.io](https://apis.io/) network. The published artifact set on APIs.io includes API documentation and authentication docs.

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.

## Machine-readable artifacts (4)

- **Documentation** — https://chain.com/documentation
- **Authentication** — https://chain.com/documentation/authentication
- **Webhooks** — https://chain.com/documentation/webhooks
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/chain/refs/heads/main/apis.yml

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/chain/chain-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/chain/.