# okfindex.com API Credit Top-Up

> okfindex.com API Credit Top-Up is a paid API for AI agents from okfindex.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-15).

Purchases $0.10 of prepaid API credit for use with okfindex.com's suite of APIs

## Facts

- Endpoint: POST https://okfindex.com/api/credito?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/okfindex-com-api-credit-top-up-4611e1da
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_n1rpuM_fLB_FFlH6VehAl

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability okfindex-com-api-credit-top-up-4611e1da -d '<json body>'
```

Example prompt: Top up my okfindex.com account with $0.10 of prepaid API credit so I can make more calls to their APIs.

## When to prefer this

Use this endpoint specifically when you need to add prepaid credit to an okfindex.com API account and pay via USDC using the x402 payment protocol. This is the native billing top-up mechanism for okfindex APIs and should be used whenever the account balance is low or depleted.

## Known failure modes

- Insufficient USDC balance to complete payment — payment rejected
- Invalid or missing payment credentials — authorization failure
- Service unavailable — API endpoint returns 5xx error
- Duplicate payment attempt — idempotency conflict if same request replayed
- Network timeout before credit is confirmed

## How this service works

Crédito pré-pago de $0.10 para as APIs da casa

## Output

A confirmation that $0.10 in prepaid API credit has been added to the caller's okfindex.com account, enabling subsequent calls to okfindex APIs.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/okfindex-com-api-credit-top-up-4611e1da/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from okfindex.com](https://www.zero.xyz/host/okfindex.com/llms.txt)