# SignalHarness Payment URI Parse

> SignalHarness Payment URI Parse is a paid API for AI agents from signalharness.ai, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Parses and validates a payment URI string, extracting structured payment data and any associated warnings

## Facts

- Endpoint: POST https://signalharness.ai/api/agent/services/payment_uri_parse/invoke
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/signalharness-payment-uri-parse-521fec4e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WYqGjG1Nwp5TtjpY3LK0j

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 signalharness-payment-uri-parse-521fec4e -d '<json body>'
```

Example prompt: Can you parse this payment URI for me and tell me what's in it, including any warnings: 'ethereum:0x1234...?value=1000000&token=USDC'?

## When to prefer this

Choose this endpoint when you need to programmatically extract structured fields from a raw payment URI string, especially in agent-native or x402 payment workflows where you need to validate or audit payment links before acting on them. It is purpose-built for the SignalHarness agent ecosystem and returns a receipt suitable for audit trails.

## Known failure modes

- Malformed or unparseable URI returns an error status
- URI string exceeds 65536 character limit
- URI string shorter than 2 characters
- Network or payment processing errors on the x402 layer
- Unrecognized URI scheme may produce warnings rather than a clean parse

## How this service works

Explore 330 pay-per-call x402 API services and 27 agent-native digital products, with Base USDC pricing, secure Polar checkout, and free discovery.

## Output

Returns a JSON object containing the parsed payment URI as structured data, a list of any warnings encountered during parsing, the evidence scope indicating the data source, the service ID, and a full receipt with execution metadata including request ID, execution ID, latency, and a SHA-256 result hash.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "payment_uri_request": {
   "type": "string",
   "maxLength": 65536,
   "minLength": 2
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "replay": false,
  "result": {
   "warnings": [
    "Parsing never validates the recipient, amount, token, or payment intent."
   ],
   "service_id": "payment_uri_parse",
   "evidence_scope": "caller_supplied_data",
   "parsed_payment_uri": "{\"chain_id\":\"8453\",\"function_name\":null,\"parameters\":{\"value\":\"1000\"},\"scheme\":\"ethereum\",\"target\":\"0x0000000000000000000000000000000000000001\"}"
  },
  "status": "succeeded",
  "receipt": {
   "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
   "usage": [],
   "status": "succeeded",
   "network": "eip155:8453",
   "artifacts": [],
   "endedAtMs": 0,
   "latencyMs": 0,
   "paymentId": "example-payment",
   "receiptId": "example-receipt",
   "requestId": "example-request",
   "serviceId": "payment_uri_parse",
   "executionId": "example-execution",
   "startedAtMs": 0,
   "amountAtomic": "5000",
   "resultSha256": "df1ab94d311bc0d8f9234d4ef121716806b7a0d863766eb0def613c3045b9d12",
   "serviceVersion": "1.0.0",
   "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
  },
  "artifacts": [],
  "requestId": "example-request",
  "executionId": "example-execution"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/signalharness-payment-uri-parse-521fec4e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from signalharness.ai](https://www.zero.xyz/host/signalharness.ai/llms.txt)