SEO Content Gap Analyzer

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SearchLiveeip155:8453Exactvia cdp
SeoKeywordsContentData
Calls · 30d
3
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 3 snapshots so far.
$14.47
Verified settled volume
592 settlements proven x402 by their on-chain EIP-3009 marker.
$0.050
Listed price
As published in the catalog. Always read the live 402 before paying.
3
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-10-25 17:34Z
$0.42
Upstream on-chain volume
42 transactions, checked 2026-10-23 18:18Z
Paid to
0x8d38D6026cf3A9805DE9c5F0611ceE95B532B120

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.

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  ],
  "resource": {
    "url": "https://agent-data.centorprat.workers.dev/tools/seo-content-gap-analyzer",
    "tags": [
      "seo",
      "keywords",
      "content",
      "data"
    ],
    "mimeType": "application/json",
    "description": "Give your page + 1-5 competitor pages. Returns the keyword phrases, topic clusters, questions, entities and non-keyword signals competitors emphasise that your page under-covers or omits - weighted by competitor consensus, scored, and prioritized into actions. Keyless, read-only, agent-callable. One search per call (result caps in the input schema); failed lookups are not charged.",
    "serviceName": "SEO Content Gap Analyzer"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "yourUrl": "https://www.python.org/about/",
            "competitorUrls": [
              "https://www.ruby-lang.org/en/about/"
            ]
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "items": [
              {
                "signal": "large-content-gap",
                "yourUrl": "https://www.python.org/about/",
                "checkedAt": "2026-10-23T11:32:13+00:00",
                "yourTitle": "About Python™ | Python.org",
                "missingTopics": [
                  {
                    "topic": "ruby",
                    "gapScore": 403.1,
                    "phraseCount": 116,
                    "examplePhrases": [
                      "ruby",
                      "ruby ruby",
                      "wondering why ruby",
                      "ideals of ruby",
                      "implementations of ruby",
                      "creator of ruby"
                    ],
                    "competitorConsensus": 1
                  },
                  {
                    "topic": "languages",
                    "gapScore": 39.8,
                    "phraseCount": 16,
                    "examplePhrases": [
                      "languages",
                      "ruby from other languages",
                      "popularity of programming languages",
                      "looked at other languages",
                      "outrageous in many languages",
                      "inspired by functional languages"
                    ],
                    "competitorConsensus": 1
                  },
                  {
                    "topic": "matz",
                    "gapScore": 37.4,
                    "phraseCount": 19,
                    "examplePhrases": [
                      "matz",
                      "yukihiro matz",
                      "creator yukihiro matz",
                      "extension libraries as matz",
                      "ruby creator yukihiro matz",
                      "awesome rubies references matz"
                    ],
                    "competitorConsensus": 1
                  },
                  {
                    "topic": "contents",
                    "gapScore": 32.4,
                    "phraseCount": 5,
                    "examplePhrases": [
                      "table of contents",
                      "contents",
                      "contents table of contents",
                      "rss table of contents",
                      "2003 table of contents"
                    ],
                    "competitorConsensus": 1
                  },
                  {
                    "topic": "creator",
                    "gapScore": 31.6,
                    "phraseCount": 7,
                    "examplePhrases": [
                      "creator",
                      "ideals of ruby creator",
                      "ruby creator",
                      "interview with the creator",
                      "careful balance its creator",
                      "led by ruby creator"
                    ],
                    "competitorConsensus": 1
                  },
                  {
                    "topic": "rss",
                    "gapScore": 30.4,
                    "phraseCount": 5,
                    "examplePhrases": [
                      "news rss",
                      "rss",
                      "recent news rss",
                      "bibliography recent news rss",
                      "logo news rss"
                    ],
                    "competitorConsensus": 1
                  },
                  {
                    "topic": "perl",
                    "gapScore": 26,
                    "phraseCount": 9,
                    "examplePhrases": [
                      "perl",
                      "ruby from perl",
                      "easier than in perl",
                      "parrot virtual machine perl",
                      "favorite languages perl",
                      "powerful than perl"
                    ],
                    "competitorConsensus": 1
                  },
                  {
                    "topic": "table",
                    "gapScore": 24.3,
                    "phraseCount": 9,
                    "examplePhrases": [
                      "table",
                      "table of contents table",
                      "contents table",
                      "recent news rss table",
                      "december 22nd 2003 table",
                      "news rss table"
                    ],
                    "competitorConsensus": 1
                  },
                  {
                    "topic": "features",
                    "gapScore": 24.1,
                    "phraseCount": 13,
                    "examplePhrases": [
                      "features",
                      "ruby features",
                      "objectoriented languages ruby features",
                      "wealth of other features",
                      "handle errors ruby features",
                      "os allows ruby features"
                    ],
                    "competitorConsensus": 1
                  },
                  {
                    "topic": "libraries",
                    "gapScore": 23.9,
                    "phraseCount": 10,
                    "examplePhrases": [
                      "libraries",
                      "install docs libraries",
                      "docs libraries",
                      "extension libraries",
                      "ruby install docs libraries",
                      "tw install docs libraries"
                    ],
                    "competitorConsensus": 1
                  },
                  {
                    "topic": "feature",
                    "gapScore": 23.6,
                    "phraseCount": 4,
                    "examplePhrases": [
                      "blocks truly expressive feature",
                      "truly expressive feature",
                      "expressive feature",
                      "feature"
                    ],
                    "competitorConsensus": 1
                  },
                  {
                    "topic": "methods",
                    "gapScore": 23.1,
                    "phraseCount": 12,
                    "examplePhrases": [
                      "methods",
                      "language by giving methods",
                      "syntactic sugar for methods",
                      "words many other methods",
                      "receive all its methods",
                      "adds pile of methods"
                    ],
                    "competitorConsensus": 1
                  }
                ],
                "yourWordCount": 657,
                "missingPhrases": [
                  {
                    "words": 1,
                    "phrase": "ruby",
                    "status": "missing",
                    "gapScore": 200,
                    "yourWeight": 0,
                    "competitorWeight": 200,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 2,
                    "phrase": "ruby ruby",
                    "status": "missing",
                    "gapScore": 21.3,
                    "yourWeight": 0,
                    "competitorWeight": 19,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 3,
                    "phrase": "table of contents",
                    "status": "missing",
                    "gapScore": 14.9,
                    "yourWeight": 0,
                    "competitorWeight": 12,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 1,
                    "phrase": "languages",
                    "status": "under-covered",
                    "gapScore": 14,
                    "yourWeight": 1,
                    "competitorWeight": 15,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 1,
                    "phrase": "table",
                    "status": "missing",
                    "gapScore": 12,
                    "yourWeight": 0,
                    "competitorWeight": 12,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 1,
                    "phrase": "contents",
                    "status": "missing",
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                    "competitorWeight": 12,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 1,
                    "phrase": "matz",
                    "status": "missing",
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                    "competitorWeight": 11,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 2,
                    "phrase": "news rss",
                    "status": "missing",
                    "gapScore": 10.1,
                    "yourWeight": 0,
                    "competitorWeight": 9,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 1,
                    "phrase": "creator",
                    "status": "missing",
                    "gapScore": 10,
                    "yourWeight": 0,
                    "competitorWeight": 10,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 1,
                    "phrase": "perl",
                    "status": "missing",
                    "gapScore": 10,
                    "yourWeight": 0,
                    "competitorWeight": 10,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 1,
                    "phrase": "blocks",
                    "status": "missing",
                    "gapScore": 9,
                    "yourWeight": 0,
                    "competitorWeight": 9,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 1,
                    "phrase": "libraries",
                    "status": "missing",
                    "gapScore": 9,
                    "yourWeight": 0,
                    "competitorWeight": 9,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 1,
                    "phrase": "rss",
                    "status": "missing",
                    "gapScore": 9,
                    "yourWeight": 0,
                    "competitorWeight": 9,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 1,
                    "phrase": "methods",
                    "status": "missing",
                    "gapScore": 9,
                    "yourWeight": 0,
                    "competitorWeight": 9,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 4,
                    "phrase": "ruby is so popular",
                    "status": "missing",
                    "gapScore": 8.2,
                    "yourWeight": 0,
                    "competitorWeight": 6,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 4,
                    "phrase": "popular its fans call",
                    "status": "missing",
                    "gapScore": 8.2,
                    "yourWeight": 0,
                    "competitorWeight": 6,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 4,
                    "phrase": "fans call it beautiful",
                    "status": "missing",
                    "gapScore": 8.2,
                    "yourWeight": 0,
                    "competitorWeight": 6,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 4,
                    "phrase": "ruby in twenty minutes",
                    "status": "missing",
                    "gapScore": 8.2,
                    "yourWeight": 0,
                    "competitorWeight": 6,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 4,
                    "phrase": "ruby from other languages",
                    "status": "missing",
                    "gapScore": 8.2,
                    "yourWeight": 0,
                    "competitorWeight": 6,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 1,
                    "phrase": "java",
                    "status": "missing",
                    "gapScore": 8,
                    "yourWeight": 0,
                    "competitorWeight": 8,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 2,
                    "phrase": "started explore",
                    "status": "missing",
                    "gapScore": 7.8,
                    "yourWeight": 0,
                    "competitorWeight": 7,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 3,
                    "phrase": "wondering why ruby",
                    "status": "missing",
                    "gapScore": 7.4,
                    "yourWeight": 0,
                    "competitorWeight": 6,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 3,
                    "phrase": "popular its fans",
                    "status": "missing",
                    "gapScore": 7.4,
                    "yourWeight": 0,
                    "competitorWeight": 6,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 3,
                    "phrase": "call it beautiful",
                    "status": "missing",
                    "gapScore": 7.4,
                    "yourWeight": 0,
                    "competitorWeight": 6,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 3,
                    "phrase": "yet they say",
                    "status": "missing",
                    "gapScore": 7.4,
                    "yourWeight": 0,
                    "competitorWeight": 6,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 3,
                    "phrase": "say it handy",
                    "status": "missing",
                    "gapScore": 7.4,
                    "yourWeight": 0,
                    "competitorWeight": 6,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 3,
                    "phrase": "handy and practical",
                    "status": "missing",
                    "gapScore": 7.4,
                    "yourWeight": 0,
                    "competitorWeight": 6,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 3,
                    "phrase": "practical what gives",
                    "status": "missing",
                    "gapScore": 7.4,
                    "yourWeight": 0,
                    "competitorWeight": 6,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 3,
                    "phrase": "ruby in twenty",
                    "status": "missing",
                    "gapScore": 7.4,
                    "yourWeight": 0,
                    "competitorWeight": 6,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 3,
                    "phrase": "ruby from java",
                    "status": "missing",
                    "gapScore": 7.4,
                    "yourWeight": 0,
                    "competitorWeight": 6,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 3,
                    "phrase": "ruby from perl",
                    "status": "missing",
                    "gapScore": 7.4,
                    "yourWeight": 0,
                    "competitorWeight": 6,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 3,
                    "phrase": "ruby from php",
                    "status": "missing",
                    "gapScore": 7.4,
                    "yourWeight": 0,
                    "competitorWeight": 6,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 3,
                    "phrase": "ruby from python",
                    "status": "missing",
                    "gapScore": 7.4,
                    "yourWeight": 0,
                    "competitorWeight": 6,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 3,
                    "phrase": "ruby reference manual",
                    "status": "missing",
                    "gapScore": 7.4,
                    "yourWeight": 0,
                    "competitorWeight": 6,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 3,
                    "phrase": "recent news rss",
                    "status": "missing",
                    "gapScore": 7.4,
                    "yourWeight": 0,
                    "competitorWeight": 6,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 1,
                    "phrase": "popular",
                    "status": "missing",
                    "gapScore": 7,
                    "yourWeight": 0,
                    "competitorWeight": 7,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 1,
                    "phrase": "mixin",
                    "status": "missing",
                    "gapScore": 7,
                    "yourWeight": 0,
                    "competitorWeight": 7,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 1,
                    "phrase": "explore",
                    "status": "missing",
                    "gapScore": 7,
                    "yourWeight": 0,
                    "competitorWeight": 7,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 1,
                    "phrase": "php",
                    "status": "missing",
                    "gapScore": 7,
                    "yourWeight": 0,
                    "competitorWeight": 7,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  },
                  {
                    "words": 1,
                    "phrase": "recent",
                    "status": "missing",
                    "gapScore": 7,
                    "yourWeight": 0,
                    "competitorWeight": 7,
                    "competitorsTotal": 1,
                    "competitorConsensus": 1
                  }
                ],
                "contentGapScore": 94,
                "yourPageFetched": true,
                "questionIntentGaps": [],
                "competitorsAnalyzed": 1,
                "competitorsRequested": 1,
                "competitorMedianWordCount": 1360,
                "coverageOfCompetitorTopics": 6
              }
            ]
          }
        }
      },
      "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": {
                "required": [
                  "yourUrl",
                  "competitorUrls"
                ],
                "properties": {
                  "yourUrl": {
                    "type": "string",
                    "description": "The page you want to rank, e.g. \"https://your-site.com/guide\". Its content is compared against the competitors."
                  },
                  "competitorUrls": {
                    "type": "array",
                    "items": {
                      "type": "string"
                    },
                    "maxItems": 3,
                    "description": "Competing pages that rank for your topic, e.g. [\"https://competitor-a.com/guide\", \"https://competitor-b.com/guide\"]. One gap analysis is produced comparing your page against all of them."
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      }
    }
  },
  "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.

0.05USDC≈ $0.05 USD
on Base · exact scheme

Pay 0.05 USDC on Base to 0x8d38…2B120. The signed payment is good for 5 minutes.

USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
50000 smallest units
50000units
on Polygon · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Token contract
0x3c49…c3359
Payment window
5 minutes
50000units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Token contract
EPjFWd…TDt1v
Payment window
5 minutes
The catalog’s raw entry
[
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    "extra": {
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    },
    "payTo": "0x8d38D6026cf3A9805DE9c5F0611ceE95B532B120",
    "amount": "50000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
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      "version": "2"
    },
    "payTo": "0x8d38D6026cf3A9805DE9c5F0611ceE95B532B120",
    "amount": "50000",
    "scheme": "exact",
    "network": "eip155:137",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
    },
    "payTo": "3644DrcePengCVjznEa59Dm7Mu7Acr522NvYyapHRHQh",
    "amount": "50000",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "yourUrl": "https://www.python.org/about/",
          "competitorUrls": [
            "https://www.ruby-lang.org/en/about/"
          ]
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "items": [
            {
              "signal": "large-content-gap",
              "yourUrl": "https://www.python.org/about/",
              "checkedAt": "2026-10-23T11:32:13+00:00",
              "yourTitle": "About Python™ | Python.org",
              "missingTopics": [
                {
                  "topic": "ruby",
                  "gapScore": 403.1,
                  "phraseCount": 116,
                  "examplePhrases": [
                    "ruby",
                    "ruby ruby",
                    "wondering why ruby",
                    "ideals of ruby",
                    "implementations of ruby",
                    "creator of ruby"
                  ],
                  "competitorConsensus": 1
                },
                {
                  "topic": "languages",
                  "gapScore": 39.8,
                  "phraseCount": 16,
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                {
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            }
          ]
        }
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    },
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                  },
                  "maxItems": 3,
                  "description": "Competing pages that rank for your topic, e.g. [\"https://competitor-a.com/guide\", \"https://competitor-b.com/guide\"]. One gap analysis is produced comparing your page against all of them."
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            },
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              "type": "string"
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          "additionalProperties": false
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        "output": {
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          "required": [
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          ],
          "properties": {
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              "type": "string"
            },
            "example": {
              "type": "object"
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          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-10-25 17:34Z
Last indexed by Roundhouse
2026-10-26 17:40Z
Last enriched (probe, favicon, geo)
2026-10-23 18:18Z
x402 version
2
Max timeout
300s
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. 3 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 SEO Content Gap Analyzer 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=SEO%20Content%20Gap%20Analyzer'
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://agent-data.centorprat.workers.dev/tools/seo-content-gap-analyzer, 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.