# CommsHarbor API Credit Top-Up

> CommsHarbor API Credit Top-Up is a paid API for AI agents from commsharbor.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-17).

Purchases $0.10 of prepaid credit for use with CommsHarbor's house APIs

## Facts

- Endpoint: POST https://commsharbor.com/api/credito?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/commsharbor-api-credit-top-up-e5627a32
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LSYlRfs3RQLi9ulPSdVdW

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 commsharbor-api-credit-top-up-e5627a32 -d '<json body>'
```

Example prompt: Top up my CommsHarbor API account with $0.10 of prepaid credit so I can start making API calls.

## When to prefer this

Use this endpoint when you need to fund or replenish prepaid API credit specifically for CommsHarbor's suite of APIs. This is the correct call before making any CommsHarbor API requests that require a positive credit balance.

## Known failure modes

- Payment failure if USDC wallet has insufficient funds
- Duplicate credit purchase if called multiple times without checking balance
- Network timeout resulting in ambiguous payment state
- Invalid authentication leading to credit not being applied to the correct account

## How this service works

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

## Output

A confirmation that $0.10 of prepaid credit has been added to the caller's CommsHarbor API account, enabling subsequent API calls against the house APIs.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/commsharbor-api-credit-top-up-e5627a32/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from commsharbor.com](https://www.zero.xyz/host/commsharbor.com/llms.txt)