Tool detail

Mekler: citation source overlap

Finds duplicate URLs and shared links across 2-10 supplied citations, without fetching pages or judging truth.

Categories: Web research

Use when

check whether several cited sources actually overlap
detect duplicate URLs before counting sources as corroboration
find shared links across a set of citation chains

Not for

not a fact-checker - no truth, relevance or independence verdict
not a web fetcher - analyzes only the URLs/HTML you supply

Inputs

POST JSON body: claim (string <=4000, required, label only); citations (array of 2-10 {id, url required; html, derives_from, evidence_locator optional}, required)

Admitted input schema

{
  "type": "object",
  "properties": {
    "citations": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "derives_from": {
            "type": "string",
            "minLength": 0,
            "maxLength": 64,
            "description": "Caller-declared parent citation ID. Requires evidence_locator; cycles rejected."
          },
          "evidence_locator": {
            "type": "string",
            "minLength": 1,
            "maxLength": 256,
            "description": "Location supporting declared lineage; not independently verified."
          },
          "html": {
            "type": "string",
            "minLength": 0,
            "maxLength": 4096,
            "description": "Supplied article HTML; limit 131072 UTF-8 bytes. Never executed."
          },
          "id": {
            "type": "string",
            "minLength": 0,
            "maxLength": 4096,
            "pattern": "^[A-Za-z0-9_.-]{1,64}$"
          },
          "url": {
            "type": "string",
            "minLength": 0,
            "maxLength": 2048,
            "pattern": "^https://",
            "format": "uri"
          }
        },
        "required": [
          "id",
          "url"
        ],
        "additionalProperties": false
      },
      "minItems": 2,
      "maxItems": 10
    },
    "claim": {
      "type": "string",
      "minLength": 1,
      "maxLength": 4000,
      "description": "Context label only; truth and semantic relevance are not assessed."
    }
  },
  "required": [
    "claim",
    "citations"
  ],
  "additionalProperties": false
}

Endpoint

Method: POST
URL: https://tkivbru614.execute-api.us-east-1.amazonaws.com/v1/sources/check

Payment

Protocol: x402
Listed price: 0.05 USDC per call (Solana)
Payment method: exact
Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
Asset: EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v

Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.

Source

Directory: Coinbase x402 Bazaar
Record: POST https://tkivbru614.execute-api.us-east-1.amazonaws.com/v1/sources/check
Retrieved: 2026-09-30T20:37:07.382Z
Catalog file SHA-256: 6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524
Catalog built: 2026-09-30T22:31:58.034Z