# x402 Crypto Wallet Validator

> x402 Crypto Wallet Validator is a paid API for AI agents from x402-crypto.vercel.app, paid per call via x402, $0.143043/call, status unknown (last checked 2026-09-15).

Validates a cryptocurrency wallet address for a given blockchain, returning validity status via x402 micropayment-gated API

## Facts

- Endpoint: POST https://x402-crypto.vercel.app/api/wallet-validator/%7Bpath%7D
- Price: $0.143043/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-crypto-wallet-validator-9872518f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qENWIOM3oGkGbkUQTek2I

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 x402-crypto-wallet-validator-9872518f -d '<json body>'
```

Example prompt: Can you check whether this wallet address is valid on Ethereum: 0x742d35Cc6634C0532925a3b844Bc454e4438f44e?

## When to prefer this

Use this endpoint when you need to programmatically verify that a cryptocurrency wallet address is valid for a specific blockchain before executing a transfer, storing user-provided addresses, or auditing address lists. It is particularly useful for agents handling payments or onboarding flows where address correctness is critical. The x402 micropayment model makes it cost-effective for per-call validation without subscription overhead.

## Known failure modes

- Invalid or malformed wallet address returns a negative validation result
- Unsupported blockchain name may return an error or unexpected result
- Missing required 'query' field causes a 400-level error
- Payment failure via x402 protocol results in 402 Payment Required response
- Network timeout or upstream API unavailability returns a 5xx error

## How this service works

Paid cryptocurrency API endpoints via x402 micropayments

## Output

Returns a JSON object with a data payload indicating whether the provided wallet address is valid for the specified blockchain, including validation status and potentially address format details. The exact structure varies by chain.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "query"
 ],
 "properties": {
  "chain": {
   "type": "string",
   "description": "Blockchain name (e.g. ethereum, bitcoin, solana)"
  },
  "query": {
   "type": "string",
   "description": "Wallet address to validate"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "data": {
   "type": "object",
   "description": "Response payload from the upstream API (structure varies by endpoint)"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-crypto-wallet-validator-9872518f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-crypto.vercel.app](https://www.zero.xyz/host/x402-crypto.vercel.app/llms.txt)