# Delx Commerce X402 Asset Match

> Delx Commerce X402 Asset 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).

Checks whether a given payment asset (e.g. USDC) is supported by a list of accepted assets for x402 protocol payments

## Facts

- Endpoint: POST https://commerce.delx.ai/api/v1/x402/x402-asset-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-x402-asset-match-93b8a75f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0FlVNXLdfDVwwmwrZN69H

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-asset-match-93b8a75f -d '<json body>'
```

Example prompt: Before submitting the x402 payment, check whether USDC is in the list of supported assets [USDC, ETH, SOL] and tell me if it matches.

## When to prefer this

Use this endpoint when an AI agent needs to deterministically verify that a specific payment asset is accepted before initiating an x402 micropayment, especially when proof of in-memory-only processing and no data retention is required. Prefer this over custom logic when verifiable, auditable asset matching with a cryptographic input hash is needed.

## Known failure modes

- Asset not in supported list — returns matched: false with status indicating no match
- Invalid or empty asset string — may return error or unmatched result
- Supported assets array exceeds 256-item limit — request rejected
- Malformed request body — returns schema validation error

## 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' field containing the matched boolean, the actual matched asset name, and the full list of supported assets; a 'status' field ('pass'/'fail'); an 'operation' identifier; and an 'evidence' block with a SHA-256 hash of the input and confirmation that no data was retained and no external calls were made.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "asset": {
   "type": "string",
   "maxLength": 8192,
   "description": "Asset supplied to X402 Asset Match; used only for this bounded calculation and processed in memory without retention."
  },
  "supported_assets": {
   "type": "array",
   "items": {
    "type": "string",
    "maxLength": 8192
   },
   "maxItems": 256,
   "description": "Supported Assets supplied to X402 Asset Match; used only for this bounded calculation and processed in memory without retention."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "actual": "USDC",
   "matched": true,
   "supported": [
    "USDC"
   ]
  },
  "schema": "delx/util-x402-asset-match/v1",
  "status": "pass",
  "evidence": {
   "retained": false,
   "input_sha256": "87c9c6183983f222462f4ce259bafbeb4418e6ba18af409b98db69898b5ce097",
   "external_calls": 0
  },
  "operation": "delivery_contract:x402_asset_match"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-commerce-x402-asset-match-93b8a75f/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)