# Vokko PayTo Address Check

> Vokko PayTo Address Check is a paid API for AI agents from www.vokko.eu, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-12).

Checks whether a specific Ethereum/USDC address belongs to a given domain's x402 payment endpoint, providing ownership evidence.

## Facts

- Endpoint: GET https://www.vokko.eu/api/v1/hosts/:domain/payto-check?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vokko-payto-address-check-fc270df6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5o60LLCCj_i34WAV3K9H0

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 vokko-payto-address-check-fc270df6
```

Example prompt: Before I pay, can you check whether the address 0x07066ea0e66cf277cd279ed7fbca220ecb41e5a4 actually belongs to allbirds.com's x402 payment system — I want evidence it's legitimate before sending USDC.

## When to prefer this

Use this endpoint when an agent or user needs to verify that a specific USDC/Ethereum address is the legitimate x402 payment recipient for a given domain before authorizing a payment. Prefer it over simply trusting a merchant-supplied address, especially when the address was received through an indirect channel (email, redirect, third-party) and payment fraud or address substitution is a concern.

## Known failure modes

- Domain not found or not x402-enabled — returns no association data
- Address does not match any known payto configuration for the domain
- Stale cached data may reduce freshness confidence
- Invalid Ethereum address format returns an error
- Network timeout or upstream unavailability

## How this service works

Does 0x07066ea0e66cf277cd279ed7fbca220ecb41e5a4 belong to allbirds.com? Evidence, not a guarantee. $0.002.

## Output

Returns evidence (not a guarantee) of whether the specified Ethereum/USDC address is associated with the given domain's x402 payment configuration. Includes ownership signals and freshness metadata to help assess legitimacy before sending payment.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vokko-payto-address-check-fc270df6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.vokko.eu](https://www.zero.xyz/host/www.vokko.eu/llms.txt)