This API is used for the classic integration. If you are just starting your implementation, refer to our new integration guide instead. The Fund API provides endpoints for managing the funds in the accounts on your platform. These management operations include, for example, the transfer of funds from one account to another, the payout of funds
https://cal-test.adyen.com/cal/services/Fund/v6
Auth type
API Key Header
Auth header
X-API-Key: YOUR_API_KEY
Rate limit
Based on contract
Pricing
Enterprise / contact sales
Free quota
None
Documentation
https://api.apis.guru/v2/specs/adyen.com:FundService/6.json
Endpoint status
Server online — HTTP 401 — server is online but path returned an error (may require auth)1.79s
(checked Mar 29, 2026)
Builder score
D
45%
builder-friendly
API key in the X-API-Key header
X-API-Key: YOUR_API_KEY
Paid fund/investment API. Pricing available on request.
| Method | Path | Description |
|---|---|---|
| POST | /accountHolderBalance |
Get the balances of an account holder |
| POST | /accountHolderTransactionList |
Get a list of transactions |
| POST | /debitAccountHolder |
Send a direct debit request |
| POST | /payoutAccountHolder |
Pay out from an account to the account holder |
| POST | /refundFundsTransfer |
Refund a funds transfer |
| POST | /refundNotPaidOutTransfers |
Refund all transactions of an account since the most recent payout |
| POST | /setupBeneficiary |
Designate a beneficiary account and transfer the benefactor's current balance |
| POST | /transferFunds |
Transfer funds between platform accounts |
curl 'https://cal-test.adyen.com/cal/services/Fund/v6/accountHolderBalance' \ -H 'X-API-Key: YOUR_API_KEY'
{}
Data sourced from API Map. Always verify pricing and rate limits against the official Fund documentation.