Hamster Bank API
Access account data, initiate payments, and confirm funds with our secure, compliant Open Banking APIs. FAPI-certified and ISO 20022 ready.
Three APIs, Endless Possibilities
Everything you need to build powerful financial applications, from personal finance tools to payment platforms.
Account Information (AIS)
Read account details, balances, and transaction history with customer consent. Support for multiple account types.
Payment Initiation (PIS)
Initiate domestic and international payments securely. Support for Faster Payments, BACS, CHAPS, and SEPA.
Funds Confirmation (CoF)
Instantly verify if sufficient funds are available in a customer's account before completing a transaction.
Simple, RESTful APIs
Clean JSON responses, predictable resource-oriented URLs, and standard HTTP methods. Just like the APIs you're used to.
- OAuth 2.0 with PKCE for secure authorization
- FAPI 1.0 Advanced certified for security
- ISO 20022 compliant payment messages
- Idempotency keys for safe retries
curl -X GET "https://api.hamsterbank.ai/open-banking/v1/accounts" \\
-H "Authorization: Bearer {access_token}" \\
-H "X-Consent-ID: {consent_id}"{
"data": [
{
"account_id": "acc_1234567890",
"status": "enabled",
"currency": "GBP",
"account_type": "current",
"nickname": "Main Account",
"identifiers": [
{
"scheme": "SortCodeAccountNumber",
"id": "608371-12345678"
}
]
}
],
"links": {
"self": "/accounts"
}
}Start Building in Minutes
Get up and running with our APIs quickly. No lengthy approval process for sandbox access.
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Get API Keys
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Make Your First Call
Follow our quickstart guide to make your first API call in under 5 minutes.