Roundhouse

Canonical Consistency

Audit canonical and robots directives across a set of supplied pages together. Reports a canonical chain, where one page names another that names a third and crawlers do not follow reliably; pages consolidating onto a target that declares noindex; a page declaring noindex while naming itself canonical; an X-Robots-Tag header disagreeing with the markup, where which one wins is not under the page author control; a canonical crossing hosts; and pages with none at all. Nothing is fetched.

Searchofflineeip155:8453Exactvia cdp
https://api.zfinia.com/x402/v1/canonical-robots-consistency-audit
CanonicalRobots directivesIndexingSite auditDeveloper tooling
Settlements · 30d
218↓ 56%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$25.30
Verified settled volume
255 settlements proven x402 by their on-chain EIP-3009 marker.
$0.110
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 2026-10-04 08:18Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x25e8245f07d5e4873987293dad666afbe56a9608

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.

Accepts

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

0.11USDC≈ $0.11 USD
on Base · exact scheme

Pay 0.11 USDC on Base to 0x25e8…a9608. The signed payment is good for 1 minute.

Paid to
0x25e8…a9608
USD Coin contract
0x8335…02913
Payment window
1 minute
As published
110000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x25e8245f07d5e4873987293dad666afbe56a9608",
    "amount": "110000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "pages": [
            {
              "url": "https://example.test/widgets/widget-1",
              "html": "<html><head><title>W1</title><link rel=\"canonical\" href=\"https://example.test/widgets/widget-1?ref=newsletter\"></head><body>a <a href=\"/widgets/widget-1/print\">print</a></body></html>"
            },
            {
              "url": "https://example.test/widgets/widget-1/print",
              "html": "<html><head><title>W1 print</title><link rel=\"canonical\" href=\"https://example.test/widgets/widget-1\"><meta name=\"robots\" content=\"noindex\"></head><body>a</body></html>"
            },
            {
              "url": "https://example.test/widgets/widget-2",
              "html": "<html><head><title>W2</title><link rel=\"canonical\" href=\"https://example.test/widgets/widget-2\"><meta name=\"robots\" content=\"noindex, follow\"></head><body>b</body></html>",
              "headers": {
                "X-Robots-Tag": "index, follow"
              }
            },
            {
              "url": "https://example.test/widgets/widget-3",
              "html": "<html><head><title>W3</title></head><body>c</body></html>"
            }
          ],
          "robots_txt": "User-agent: *\nDisallow: /internal/\n"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "pages": [
            {
              "url": "https://example.test/widgets/widget-1",
              "noindex": false,
              "canonical": "https://example.test/widgets/widget-1?ref=newsletter",
              "meta_robots": null,
              "header_robots": null
            },
            {
              "url": "https://example.test/widgets/widget-1/print",
              "noindex": true,
              "canonical": "https://example.test/widgets/widget-1",
              "meta_robots": "noindex",
              "header_robots": null
            },
            {
              "url": "https://example.test/widgets/widget-2",
              "noindex": true,
              "canonical": "https://example.test/widgets/widget-2",
              "meta_robots": "noindex, follow",
              "header_robots": "index, follow"
            }
          ],
          "limits": {
            "maxPages": 50,
            "maxListed": 200,
            "maxCookies": 100,
            "maxHeaders": 200,
            "maxFindings": 500,
            "maxHtmlBytes": 262144,
            "maxSitemapUrls": 10000,
            "maxSitemapBytes": 1048576
          },
          "passed": false,
          "complete": false,
          "findings": [
            {
              "url": "https://example.test/widgets/widget-1",
              "code": "CANONICAL_POINTS_ELSEWHERE",
              "detail": "https://example.test/widgets/widget-1 names https://example.test/widgets/widget-1?ref=newsletter as canonical, so signals consolidate onto the other URL.",
              "canonical": "https://example.test/widgets/widget-1?ref=newsletter"
            },
            {
              "url": "https://example.test/widgets/widget-1/print",
              "code": "CANONICAL_POINTS_ELSEWHERE",
              "detail": "https://example.test/widgets/widget-1/print names https://example.test/widgets/widget-1 as canonical, so signals consolidate onto the other URL.",
              "canonical": "https://example.test/widgets/widget-1"
            },
            {
              "url": "https://example.test/widgets/widget-2",
              "code": "ROBOTS_HEADER_AND_META_DISAGREE",
              "detail": "https://example.test/widgets/widget-2 declares robots noindex, follow in the markup and index, follow in the header, and which one a crawler honours is not something the page controls."
            }
          ],
          "consistent": false,
          "page_count": 4,
          "request_id": "example-request",
          "service_id": "canonical_robots_consistency_audit",
          "assumptions": [
            "A robots directive may appear in the markup or in an X-Robots-Tag header, and a disagreement between them is reported because which one a crawler honours is not something the page controls.",
            "Two pages naming one canonical is normal consolidation. A canonical pointing at a page that itself points elsewhere is a chain and is reported, because chains are not followed reliably.",
            "The caller supplies every document, so nothing is fetched and no robots.txt applies to this call."
          ],
          "limitations": [
            "Coherence of the directives in the documents supplied. What any particular crawler does with them is not predicted here.",
            "consistent is true only when every page parsed, every canonical resolved sensibly, and no directive contradicted another."
          ],
          "observed_at": "2026-10-02T00:00:00.000Z",
          "not_examined": [
            "ROBOTS_TXT_DECLARES_NO_SITEMAP: robots.txt names no sitemap, which is a missed hint rather than an error."
          ],
          "finding_count": 6,
          "service_version": "1.0.0",
          "findings_by_code": {
            "CANONICAL_CHAIN": 1,
            "CANONICAL_ABSENT": 1,
            "CANONICAL_POINTS_ELSEWHERE": 2,
            "NOINDEX_WITH_SELF_CANONICAL": 1,
            "ROBOTS_HEADER_AND_META_DISAGREE": 1
          },
          "noindex_page_count": 2,
          "distinct_canonical_count": 3
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object",
              "required": [
                "pages"
              ],
              "properties": {
                "pages": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "required": [
                      "url",
                      "html"
                    ],
                    "properties": {
                      "url": {
                        "type": "string",
                        "maxLength": 2048
                      },
                      "html": {
                        "type": "string",
                        "maxLength": 262144
                      },
                      "headers": {
                        "type": "object"
                      }
                    },
                    "additionalProperties": false
                  },
                  "maxItems": 50,
                  "minItems": 1
                },
                "robots_txt": {
                  "type": "string",
                  "maxLength": 65536
                }
              },
              "additionalProperties": false
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-10-04 08:18Z
Last indexed by Roundhouse
2026-10-05 00:20Z
Last enriched (probe, favicon, geo)
2026-10-05 02:45Z
x402 version
2
Max timeout
60s
Liveness probe
HTTP 0
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

No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. 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 Canonical Consistency 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=Canonical%20Consistency'
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://api.zfinia.com/x402/v1/canonical-robots-consistency-audit, 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. Either pay over x402 (mint a personal key for $0.01 at
GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at
https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

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