# Delx Commerce — X402 Pay-To-Match Verifier

> Delx Commerce — X402 Pay-To-Match Verifier is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-02).

Verifies that an x402 payment's 'pay_to' address matches an expected address, returning a cryptographically-evidenced pass/fail result

## Facts

- Endpoint: POST https://commerce.delx.ai/api/v1/x402/x402-pay-to-match?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-commerce-x402-pay-to-match-verifier-52d7625c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CTtolzuOMkJeM_Rbu-WB6

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 delx-commerce-x402-pay-to-match-verifier-52d7625c -d '<json body>'
```

Example prompt: Check whether the x402 pay_to address '0x1111111111111111111111111111111111111111' matches the expected address '0x1111111111111111111111111111111111111111' — I need a verifiable pass/fail result with evidence that no data was retained.

## When to prefer this

Choose this endpoint when you need a verifiable, privacy-preserving check that an x402 payment's pay_to address matches an expected wallet address — especially in automated agent payment pipelines where auditability matters. The evidence object (SHA-256 hash, zero external calls, no data retention) makes it suitable for compliance and audit trails. Prefer it over client-side string comparison when you need a cryptographically-evidenced, tamper-evident record of the match result.

## Known failure modes

- Mismatched addresses return matched:false with status 'fail' rather than an error
- Malformed or non-address strings may still be compared but produce expected mismatches
- Input strings exceeding 8192 characters will be rejected
- Network or payment processing failures may return HTTP 402 or 500 errors
- USDC payment not received results in a 402 Payment Required response before computation begins

## How this service works

Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.

## Output

Returns a JSON object with a 'result' containing the actual pay_to address, the expected address, and a boolean 'matched' field. Also includes an 'evidence' object with a SHA-256 hash of the input, confirmation that no data was retained, and a count of zero external calls — providing verifiable, privacy-preserving proof of the comparison.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "pay_to": {
   "type": "string",
   "maxLength": 8192,
   "description": "Pay To supplied to X402 Pay To Match; used only for this bounded calculation and processed in memory without retention."
  },
  "expected": {
   "type": "string",
   "maxLength": 8192,
   "description": "Expected supplied to X402 Pay To Match; used only for this bounded calculation and processed in memory without retention."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "actual": "0x1111111111111111111111111111111111111111",
   "matched": true,
   "expected": "0x1111111111111111111111111111111111111111"
  },
  "schema": "delx/util-x402-pay-to-match/v1",
  "status": "pass",
  "evidence": {
   "retained": false,
   "input_sha256": "b108f77ef3414c0bad5305e638ab373474fdd56f39a323d1bf49d6743754c925",
   "external_calls": 0
  },
  "operation": "delivery_contract:x402_pay_to_match"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-commerce-x402-pay-to-match-verifier-52d7625c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from commerce.delx.ai](https://www.zero.xyz/host/commerce.delx.ai/llms.txt)