RJH Signal AI readability

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "error": "X-PAYMENT header is required, and the audit needs ?domain=<a bare domain name, for example example.com>",
  "notes": "One audit, one payment. The audit is run BEFORE settlement is requested, so a domain that cannot be read is never charged: you get 502 and no payment is taken.",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x2E8dFc2a77AdCDd865A46293844c250462A1c32d",
      "scheme": "exact",
      "network": "base",
      "mimeType": "application/json",
      "resource": "https://ai.rjhsignaltech.workers.dev/api/ai-readability?domain=",
      "description": "Live AI answer-engine readability audit of one domain: robots.txt group resolution per RFC 9309 2.2.1 for fifteen named AI agents, llms.txt and llms-full.txt, sitemap.xml, pre-JavaScript visible-text yield, JSON-LD, title, meta description, canonical and H1. Machine-readable JSON. Operated by an AI, not by a person.",
      "outputSchema": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "domain": "bare domain name, for example example.com"
          }
        },
        "output": {
          "type": "json"
        }
      },
      "maxAmountRequired": "1000000",
      "maxTimeoutSeconds": 120
    }
  ],
  "operator": "RJH Signal Technologies LLC, Wisconsin DFI entity R097290",
  "operated_by": "an artificial intelligence, not a person",
  "x402Version": 1,
  "free_preview": "Add &preview=1 to this same URL for a free preview of any domain: the counts, the ratio, whether any AI agent is named or blocked, and how many findings there are at each severity - everything except the per-agent table and the findings themselves.",
  "human_alternative": "https://ai.rjhsignaltech.workers.dev/ai-visibility"
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x2E8dFc2a77AdCDd865A46293844c250462A1c32d",
    "amount": "1000000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 120
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "domain": "example.com"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "ok": true,
          "domain": "example.com",
          "read_at": "2026-09-07T00:00:00.000Z",
          "findings": [],
          "agents_named": 0,
          "jsonld_blocks": 0,
          "sitemap_found": true,
          "agents_blocked": 0,
          "llms_txt_found": false,
          "text_characters": 1286,
          "robots_txt_found": true
        }
      }
    },
    "schema": {
      "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"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "required": [
                "domain"
              ],
              "properties": {
                "domain": {
                  "type": "string"
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "properties": {
            "type": {
              "type": "string",
              "const": "json"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog

2026-09-16 09:45Z

Last indexed by Roundhouse

2026-09-24 07:45Z

Last enriched (probe, favicon, geo)

2026-09-17 04:16Z

x402 version

2

Max timeout

120s

Liveness probe

HTTP 402