# SignalHarness Prompt Section Normalize

> SignalHarness Prompt Section Normalize is a paid API for AI agents from signalharness.ai, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Normalizes and standardizes a JSON-encoded prompt section structure into a canonical, schema-valid format

## Facts

- Endpoint: POST https://signalharness.ai/api/agent/services/prompt_section_normalize/invoke
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/signalharness-prompt-section-normalize-ade0460f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_HKQviOMMv_YiClg4uSFcu

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-prompt-section-normalize-ade0460f -d '<json body>'
```

Example prompt: Can you normalize this raw prompt section JSON into a canonical, schema-valid format? Here's the JSON string: '{"section":"context","content":"You are a helpful assistant","role":"system"}'

## When to prefer this

Choose this endpoint when you need to programmatically normalize or canonicalize prompt section JSON structures into a consistent, schema-valid format — particularly within AI agent pipelines that require standardized prompt inputs. It is well-suited for pay-per-call, low-volume normalization tasks where you need a receipt and audit trail via the x402 payment protocol on Base USDC.

## Known failure modes

- Invalid or malformed request_json string (not valid JSON) results in an error response
- request_json exceeds 65536 character limit causes rejection
- Empty or too-short request_json (minLength 2) returns validation error
- Payment failure on Base network prevents execution
- Service returns warnings when caller-supplied data cannot be fully verified

## 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 normalized analysis_json with the canonical prompt section data, any warnings about caller-supplied data reliability, service metadata including the service_id, and a cryptographic receipt with payment confirmation, execution timing, result hash, and settlement reference on Base network.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "replay": false,
  "result": {
   "warnings": [
    "Verify the caller-supplied data before relying on this result."
   ],
   "service_id": "prompt_section_normalize",
   "analysis_json": "{\"example\":\"schema-valid caller-supplied data\"}",
   "evidence_scope": "caller_supplied_data"
  },
  "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": "prompt_section_normalize",
   "executionId": "example-execution",
   "startedAtMs": 0,
   "amountAtomic": "5000",
   "resultSha256": "c943b09e535cb18540a02f5be07494af5b279fffd20721778172f44f8314b3d0",
   "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-prompt-section-normalize-ade0460f/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)