# Delx Commerce — Base USDC Payment Match

> Delx Commerce — Base USDC Payment Match is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).

Validates whether a Base chain USDC payment matches expected recipient and amount values, returning a verifiable pass/fail result.

## Facts

- Endpoint: POST https://commerce.delx.ai/api/v1/x402/base-usdc-payment-match?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-commerce-base-usdc-payment-match-71ea8ab7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_C7CMZj4dSHjQwrrXue6Wt

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-base-usdc-payment-match-71ea8ab7 -d '<json body>'
```

Example prompt: Before I release the order, check whether the Base USDC payment from recipient 0xAbC...123 for 1000000 raw units matches the expected recipient 0xDef...456 and expected amount 1000000 on chain ID 8453.

## When to prefer this

Choose this endpoint when you need a lightweight, pay-per-use, no-signup preflight check to confirm that a Base chain USDC payment's recipient and amount match expected values before triggering downstream actions. It is ideal for agent pipelines where verifiable, tamper-evident evidence (SHA-256 input hash, no data retention) is required and you do not want to run a full on-chain query yourself. Prefer it over general EVM RPC calls when auditability and simplicity matter more than raw chain access.

## Known failure modes

- Mismatched recipient address returns recipient_match: false with status indicating failure
- Mismatched amount returns amount_match: false
- Invalid or unsupported chain_id may return an error or base_chain: false
- Malformed address strings or non-numeric amount_raw may cause validation errors
- Network or service unavailability returns HTTP 5xx

## 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 block containing chain_id, a base_chain boolean, amount_match boolean, and recipient_match boolean; plus a status field ('pass' or 'fail'), an operation identifier, and an evidence block with retained=false, the SHA-256 hash of the input, and external_calls count — enabling fully verifiable, auditable payment matching without data retention.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "chain_id": {
   "type": "integer",
   "description": "Chain Id supplied to Base USDC Payment Match; used only for this bounded calculation and processed in memory without retention."
  },
  "recipient": {
   "type": "string",
   "maxLength": 8192,
   "description": "Recipient supplied to Base USDC Payment Match; used only for this bounded calculation and processed in memory without retention."
  },
  "amount_raw": {
   "type": "string",
   "maxLength": 8192,
   "description": "Amount Raw supplied to Base USDC Payment Match; used only for this bounded calculation and processed in memory without retention."
  },
  "expected_recipient": {
   "type": "string",
   "maxLength": 8192,
   "description": "Expected Recipient supplied to Base USDC Payment Match; used only for this bounded calculation and processed in memory without retention."
  },
  "expected_amount_raw": {
   "type": "string",
   "maxLength": 8192,
   "description": "Expected Amount Raw supplied to Base USDC Payment Match; used only for this bounded calculation and processed in memory without retention."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "chain_id": 8453,
   "base_chain": true,
   "amount_match": true,
   "recipient_match": true
  },
  "schema": "delx/util-base-usdc-payment-match/v1",
  "status": "pass",
  "evidence": {
   "retained": false,
   "input_sha256": "5bea38f8336c21a3b1abcc4b38ff40491f8b1c58ef31c75c8dbb711392e5bc09",
   "external_calls": 0
  },
  "operation": "evm_preflight:base_usdc_payment_match"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-commerce-base-usdc-payment-match-71ea8ab7/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)