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NovaPath Internet Archive Reference Comparator
x402
NovaPath Internet Archive Reference Comparator is a paid API for AI agents from instructional-decision-engine-x402.vercel.app, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-31).
Compares two to four Internet Archive items side-by-side across authorship, publication year, subjects, and license coverage, highlighting metadata gaps and shared subject terms with source links.
Price / call$0.02
Success—
StatusUnknown
How this service works
Compare two to four exact Internet Archive references across authorship, reported publication year, subjects and reported license coverage. Highlights missing metadata and shared subject terms, with direct source links. No full-text comparison, expert ranking or rights certification.
Output
A structured side-by-side comparison of 2–4 Internet Archive items showing: per-item authorship, reported publication year, subject tags, and license coverage; a highlighted list of missing metadata fields per item; a set of subject terms shared across items; and direct source links to each item in the Internet Archive. No full-text content, expert ranking, or certified rights information is returned.
Example use cases
Duplicate archive source detection
“I have two Internet Archive references, 'smithsonian_botany_v3' and 'smithsonian_botany_v3_alt', and I want to know if they're actually the same work — can you compare their authors, publication years, and subjects and tell me what's shared or missing?”
License compatibility check for curriculum
“Before I use these four archive items in my course materials, can you compare 'gutenberg_frankenstein_1818', 'archive_pride_prejudice_text', 'loc_civil_war_docs', and 'hathitrust_americana_poems' to see what licenses they each report and whether any are missing that info?”
Subject overlap for research bibliography
“I'm building a bibliography on environmental science and I want to know which of these three Internet Archive records — 'epa_airquality_1980', 'usgs_waterreport_1975', and 'noaa_climate_study_1990' — share subject terms with each other and which ones have incomplete metadata.”
Technical details
Endpoint
POSThttps://instructional-decision-engine-x402.vercel.app/archive/compare?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick structured comparison of 2–4 specific Internet Archive items on bibliographic metadata dimensions (author, year, subjects, license) without needing full-text analysis, expert curation, or legally certified rights information. Prefer this over general web search when you already have stable Internet Archive identifiers and need metadata gap analysis or subject overlap detection across those specific items.
Side effects
- Invalid or non-existent Internet Archive identifier returns an error or empty metadata for that item
- Fewer than 2 or more than 4 identifiers submitted causes a validation error
- Duplicate identifiers in the array are rejected due to uniqueItems constraint
- Internet Archive metadata snapshot may be stale — recently updated records may not reflect current state
- Items with no metadata return empty fields rather than an error, which may appear as all-missing metadata
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| identifiers | array |
Tags
x402
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