Exchange · custodial-multi-asset
Kraken
What it is. A large, long-established multi-asset exchange with broad fiat pairs and a mature trading API. Not Bitcoin-only.
What it bridges. Fiat ↔ BTC and BTC ↔ stablecoin, across many fiat currencies — useful where an agent’s counterparties or jurisdictions are outside US-centric rails.
Agent access. Full programmatic API (spot trading, funding, withdrawals).
How an agent uses it. KYC account; fund; execute fiat↔BTC or BTC↔stablecoin via API; withdraw to self-custody promptly. Custodial risk during the holding/conversion window.
Coverage. Broad international coverage across many fiat currencies; exact per-region availability shifts — see the venue.
Dependencies & payment. A KYC’d Kraken account and its trading API. Fund in one of many fiat currencies; execute fiat↔BTC or BTC↔stablecoin via API; withdraw to self-custody promptly.
Gotchas. Multi-asset custody surface (freeze surface spans the account and all held assets).
Links. kraken.com · API docs.
For agents — connect
Reach this programmatically — facts, not endorsements; verify before you depend on them.
- Automatability
api-kyc- Pay with
- lightning, onchain, fiat
- Auth
- API key — KYC account required
- API base
https://api.kraken.com- First call
- Complete KYC, create an API key, then full deposit/trade/withdraw over REST + WebSocket (docs.kraken.com).
In the marketplace directory: call get_service with slug kraken at /mcp · entry as data · this card as markdown.