> ## Documentation Index
> Fetch the complete documentation index at: https://docs.useagentbank.com/llms.txt
> Use this file to discover all available pages before exploring further.

# fund_payment_with_grant

> Fund the current hosted crypto-deposit instruction with an active compatible grant.

**Surface:** Hosted OAuth\
**Mutates state:** Submits the current immutable payment instruction\
**Idempotency:** Stable `request_id`\
**Confirmation:** A new explicit funding choice for this instruction

```json theme={null}
{
  "request_id": "stable funding ID",
  "payment_id": "pay_...",
  "instruction_id": "instruction_...",
  "wallet_id": "wallet_...",
  "confirmed_by_user": true
}
```

The caller cannot supply an amount, recipient, transaction, chain, or calldata.
Call only after the funding card was displayed and a later user response chose
automatic grant funding. Reuse the same request ID while execution remains
pending. Never use this tool for fiat instructions or swaps.