# x402-tools Net String Norm (netstrnorm)

> x402-tools Net String Norm (netstrnorm) is a paid API for AI agents from openclawproductions.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-02).

Runs a paid x402 diagnostic check on a public URL to verify x402 payment-gate behavior and return normalized network string data.

## Facts

- Endpoint: GET https://openclawproductions.com/api/v1/netstrnorm?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-tools-net-string-norm-netstrnorm-3589e619
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_adFMP5XF1T_oRffmrFg9R

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 x402-tools-net-string-norm-netstrnorm-3589e619
```

Example prompt: Run the x402 net-string-norm diagnostic on https://example.com/api/paid-endpoint using a GET request and tell me what the payment gate looks like.

## When to prefer this

Choose this endpoint when you need to verify x402 protocol compliance on a specific HTTP endpoint, debug 402 payment gating behavior, or inspect EIP-3009 payment metadata returned by a URL. It is purpose-built for x402 diagnostics via OpenX402 and is especially useful for developers building or testing x402-gated APIs.

## Known failure modes

- Unpaid request returns HTTP 402 with EIP-3009 payment metadata instead of diagnostic result
- Invalid or unreachable target URL may result in an error or incomplete diagnostic
- Only GET, HEAD, DELETE methods are supported; other methods will be rejected
- Facilitator must be OpenX402; other facilitators are not supported
- Missing required 'input' object or 'type'/'method' fields returns a validation error

## How this service works

Paid x402 diagnostics. Unpaid paid-SKU requests return HTTP 402 with eip3009 extras. Facilitator: OpenX402 only.

## Output

Returns a JSON object containing the SKU name ('netstrnorm'), a diagnostic note, the price ($0.03), and the title ('Net String Norm'). In unpaid scenarios the API returns HTTP 402 with EIP-3009 extras describing payment requirements.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "url": {
       "type": "string",
       "description": "Public 402 or well-known URL. Defaults to this origin's Pipe Check."
      },
      "origin": {
       "type": "string",
       "description": "Public origin URL. Alias of url."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "sku": "netstrnorm",
  "note": "Example paid JSON shape. Not a live settle.",
  "price": "$0.03",
  "title": "Net String Norm"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-tools-net-string-norm-netstrnorm-3589e619/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from openclawproductions.com](https://www.zero.xyz/host/openclawproductions.com/llms.txt)