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    "title": "PDF Revision Monitor - Text, Pages & Change Evidence",
    "description": "Extract text from public PDFs with page citations and hashes. Compare complete observations for text or byte-only changes. Bounded downloads and parsing; no OCR or API key.",
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  "components": {
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            "title": "Public PDF URLs and document IDs",
            "type": "array",
            "description": "Up to 20 URLs or objects {url,documentId,externalId}. documentId intentionally links changing source URLs to one report; default identity is the supplied URL. No passwords or private downloads.",
            "default": [
              {
                "url": "https://www.census.gov/retail/marts/www/marts_current.pdf",
                "documentId": "census-monthly-retail-release"
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            ]
          },
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            "title": "Maximum pages per document",
            "minimum": 1,
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            "description": "Read from page 1 through this cap. Larger documents return a partial observation; no baseline update or removed-page assertion.",
            "default": 100
          },
          "maxFileSizeMb": {
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            "maximum": 20,
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            "description": "Reject a larger response before parsing. Applies to every document; redirects and DNS destinations are checked.",
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          },
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            "title": "Maximum extracted characters per document",
            "minimum": 1000,
            "maximum": 1000000,
            "type": "integer",
            "description": "Stop extraction at this bound and mark the observation partial. Partial text never replaces a complete baseline.",
            "default": 250000
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            "type": "boolean",
            "description": "Opt in to named-store history. First complete run establishes a baseline. Unchanged checks still return and bill a real observation.",
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          "baselineKey": {
            "title": "Saved baseline namespace",
            "pattern": "^[-\\w]{1,80}$",
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            "description": "One writer per namespace. A separate namespace starts independent history. Letters, digits, underscores and hyphens only.",
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              "status": {
                "type": "string",
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              },
              "meta": {
                "type": "object",
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                  "origin": {
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                  "userAgent": {
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