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SignalHarness XML Normalize & Validate
x402
SignalHarness XML Normalize & Validate is a paid API for AI agents from signalharness.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Parses, normalizes, and validates an XML string, returning structural metadata including well-formedness, node count, namespaces, errors, and warnings.
Price / call$0.01
Success—
StatusUnknown
How this service works
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Output
Returns a JSON object with: root element name, well-formedness boolean, total node count, structure summary string, list of namespaces, list of errors (with details), and list of warnings. Also includes a receipt with payment confirmation, execution metadata, latency, and a SHA-256 hash of the result for integrity verification.
Example use cases
API response XML validation
“I'm receiving XML payloads from a third-party API and I need to know if they're well-formed before I process them — can you validate this XML and tell me about any errors: '<items><item id="1"><name>Widget</name></item><item></items>'?”
Data pipeline pre-processing check
“Before I ingest this XML config file into our pipeline, can you parse it and give me a breakdown of its structure — root element, node count, namespaces, and any warnings I should know about?”
Debugging malformed XML payload
“My XML parser is crashing on this string and I can't figure out why — can you run it through the SignalHarness XML validator and tell me exactly what errors and warnings it finds: '<?xml version="1.0"?><catalog><book id="1"><title>XML Guide</title><author>Smith</catalog>'?”
Technical details
Endpoint
POSThttps://signalharness.ai/api/agent/services/xml_normalize_validate/invokeWhen to prefer
Choose this endpoint when you need a quick, cheap ($0.01 USDC), agent-native XML validation and normalization step — especially in automated pipelines where you need programmatic error and warning lists, node counts, and namespace extraction rather than human-readable reports. It is well-suited for pre-processing checks before XML ingestion, debugging malformed payloads, or asserting well-formedness as a pipeline gate. Prefer it over general-purpose XML libraries when operating in a microservice or agent context that benefits from an external, auditable validation call with a payment receipt.
Side effects
- Empty or missing XML input returns validation error
- XML exceeding 65,536 characters is rejected by input schema
- Severely malformed input may result in parse errors surfaced in the errors array rather than a hard failure
- Payment failure or insufficient USDC balance results in 402 response before execution
- Network timeout may occur for very large documents near the size limit
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| xml | string |
Output
Schema · Response
{
"type": "json",
"example": {
"replay": false,
"result": {
"root": "example",
"errors": [
"example"
],
"warnings": [
"Verify the caller-supplied data before relying on this result."
],
"nodeCount": 1,
"structure": "example",
"namespaces": [
{
"name": "example",
"value": "example"
}
],
"wellFormed": false
},
"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": "xml_normalize_validate",
"executionId": "example-execution",
"startedAtMs": 0,
"amountAtomic": "10000",
"resultSha256": "b5e29ac589d21aa3a81b58e3167709d76598c09192ae9593f7b255d5bf723448",
"serviceVersion": "1.0.0",
"settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
},
"artifacts": [],
"requestId": "example-request",
"executionId": "example-execution"
}
}Tags
x402
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