Roundhouse

AI Citation Check

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InferenceLiveeip155:8453Exactvia cdp
https://mudko.com/api/x402/citation-check
Ai-citationsAeoGeoBrand-monitoringLlm-visibility
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$11.21
Verified settled volume
66 settlements proven x402 by their on-chain EIP-3009 marker.
$0.500
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-01 14:05Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x53598173ce7c26025bab0520d9e9d0c28fbcf7de

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Live 402 challenge

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

{
  "error": "pass ?domain= (bare domain to check AI citations for).",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x53598173ce7c26025bab0520d9e9d0c28fbcf7de",
      "amount": "500000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 120
    }
  ],
  "resource": {
    "url": "https://mudko.com/api/x402/citation-check",
    "tags": [
      "ai-citations",
      "aeo",
      "geo",
      "brand-monitoring",
      "llm-visibility"
    ],
    "mimeType": "application/json",
    "description": "Live AI-citation check: runs fresh probes against major AI assistants and reports whether a domain is cited for its vertical's buying questions — citation rate per provider, list position, and whether the domain's agent-card was discovered. Fresh probes per call (not cached). $0.50 per check. Free companion diagnosis: /api/x402/deep-scan.",
    "serviceName": "AI Citation Check"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "domain": "example.com (string, required - bare domain to check)",
            "vertical": "healthcare_practice (string, optional - vertical id)"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "paid": true,
            "domain": "example.com",
            "providers": [
              {
                "probes": 2,
                "provider": "openai",
                "citations": 1,
                "avg_position": 3
              }
            ],
            "citation_rate": 0.25,
            "agent_card_discovered": false
          }
        }
      },
      "schema": {
        "type": "object",
        "$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",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "required": [
                  "domain"
                ],
                "properties": {
                  "domain": {
                    "type": "string",
                    "description": "Bare domain to check citations for (required)."
                  },
                  "vertical": {
                    "type": "string",
                    "description": "Optional vertical id to pick prompt sets (auto-detected otherwise)."
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "domain": {
                    "type": "string"
                  },
                  "providers": {
                    "type": "array"
                  },
                  "citation_rate": {
                    "type": "number"
                  },
                  "agent_card_discovered": {
                    "type": "boolean"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Accepts

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

0.5USDC≈ $0.5 USD
on Base · exact scheme

Pay 0.5 USDC on Base to 0x5359…cf7de. The signed payment is good for 2 minutes.

Paid to
0x5359…cf7de
USD Coin contract
0x8335…02913
Payment window
2 minutes
As published
500000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x53598173ce7c26025bab0520d9e9d0c28fbcf7de",
    "amount": "500000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 120
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "domain": "example.com (string, required - bare domain to check)",
          "vertical": "healthcare_practice (string, optional - vertical id)"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "paid": true,
          "domain": "example.com",
          "providers": [
            {
              "probes": 2,
              "provider": "openai",
              "citations": 1,
              "avg_position": 3
            }
          ],
          "citation_rate": 0.25,
          "agent_card_discovered": false
        }
      }
    },
    "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",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "required": [
                "domain"
              ],
              "properties": {
                "domain": {
                  "type": "string",
                  "description": "Bare domain to check citations for (required)."
                },
                "vertical": {
                  "type": "string",
                  "description": "Optional vertical id to pick prompt sets (auto-detected otherwise)."
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "properties": {
                "domain": {
                  "type": "string"
                },
                "providers": {
                  "type": "array"
                },
                "citation_rate": {
                  "type": "number"
                },
                "agent_card_discovered": {
                  "type": "boolean"
                }
              }
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-09-01 14:05Z
Last indexed by Roundhouse
2026-09-24 10:40Z
Last enriched (probe, favicon, geo)
2026-09-20 16:15Z
x402 version
2
Max timeout
120s
Liveness probe
HTTP 402
Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service AI Citation Check and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=AI%20Citation%20Check'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://mudko.com/api/x402/citation-check, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.