# Blockchain Payment Verification

> Blockchain Payment Verification is a paid API for AI agents from apexfaucet.xyz, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-18).

Verifies whether a specific on-chain transaction actually paid a given address, returning ERC20 transfer details, token totals, native value, confirmation depth, and minimum-threshold checks.

## Facts

- Endpoint: GET https://apexfaucet.xyz/api/x402/payment-verify?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockchain-payment-verification-0c0ffb51
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jdZ_ZHn6ed-A1v-V8CXOp

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 blockchain-payment-verification-0c0ffb51
```

Example prompt: Can you verify that transaction 0xabc123...def on Base actually sent USDC to my wallet at 0x742d35Cc... and that it sent at least 10 USDC?

## When to prefer this

Use this endpoint when you need to cryptographically confirm that a specific blockchain transaction actually delivered funds to a target address on Ethereum, Base, Arc, or BNB Chain. It is preferable over generic block explorers when you need a structured, machine-readable result including ERC20 transfer enumeration, token totals, minimum-threshold checks, and confirmation depth — all in a single call. Ideal for payment gating, order fulfillment automation, or audit workflows where a yes/no payment confirmation with detail is required.

## Known failure modes

- Transaction hash not found on the specified chain — request rejected with no charge
- Invalid or malformed transaction hash (not 64-char hex) — schema validation error
- Invalid recipient address format (not a valid 0x address) — schema validation error
- Token address provided but no minimum, or minimum provided without token — may produce unexpected results
- Transaction found but recipient address received zero transfers — minimum-not-met result returned
- Chain not supported or wrong chain specified for the transaction — request refused

## How this service works

Free APEX on X1, and free USDC plus APEX on Arc, three times a day. No gas, no sign-up. Plus a swap, a screener, APEX City and token checks.

## Output

Returns a breakdown of every ERC20 token transfer that reached the specified address in the transaction, per-token totals, any native (ETH/BNB) value transferred, a flag indicating whether a specified minimum was met, the transaction success or revert status, and the number of block confirmations. Transactions not found on the specified chain are rejected before any charge is applied.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "queryParams"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "hash",
      "to"
     ],
     "properties": {
      "to": {
       "type": "string",
       "pattern": "^0x[0-9a-fA-F]{40}$",
       "description": "The address that should have been paid."
      },
      "min": {
       "type": "string",
       "description": "Optional: minimum amount in token units (needs token)."
      },
      "hash": {
       "type": "string",
       "pattern": "^0x[0-9a-fA-F]{64}$",
       "description": "Transaction hash of the payment."
      },
      "chain": {
       "enum": [
        "ethereum",
        "base",
        "arc",
        "bnb"
       ],
       "type": "string",
       "description": "Chain: ethereum, base, arc or bnb. Default ethereum."
      },
      "token": {
       "type": "string",
       "pattern": "^0x[0-9a-fA-F]{40}$",
       "description": "Optional: count only this token."
      }
     }
    }
   }
  },
  "output": {
   "type": "object"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "schema": {
  "type": "object",
  "properties": {
   "ok": {
    "type": "boolean"
   },
   "data": {
    "type": "object"
   },
   "paid": {
    "type": "number"
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blockchain-payment-verification-0c0ffb51/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from apexfaucet.xyz](https://www.zero.xyz/host/apexfaucet.xyz/llms.txt)