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NovaPath Document Comparison
x402
NovaPath Document Comparison is a paid API for AI agents from instructional-decision-engine-x402.vercel.app, paid per call via x402, $0.2/call, status unknown (last checked 2026-11-01).
Compares two permitted public documents (HTML, text, or PDF) using AI analysis with exact supporting quotes, clearly distinguishing observed differences from unknowns without implying chronological order from URL position.
Price / call$0.2
Success—
StatusUnknown
How this service works
Compare two permitted public documents on demand with AI and exact supporting quotes from both sources. Distinguish observed differences from unknowns; URL order alone does not establish chronology. Bounded HTML, text and PDF text layers. Invalid sources or failed generation never settle.
Output
An AI-generated comparison of the two documents highlighting observed differences supported by exact quotes from each source. Differences are clearly separated from unknowns, and no chronological order is implied by URL position. The response is bounded to the HTML, text, or PDF text layer content of each source; invalid sources or failed generations do not produce a settled result.
Example use cases
Policy version comparison with evidence
“Compare these two public policy documents — https://agency.gov/guidelines-v1.html and https://agency.gov/guidelines-v2.html — and tell me what changed, with exact quotes from both. I confirm both are permitted public sources.”
Curriculum document diff for educators
“I need to compare two public curriculum PDFs side by side: https://district.edu/curriculum-2021.pdf and https://district.edu/curriculum-2023.pdf. Show me the differences with supporting quotes from each document — I confirm they're publicly accessible.”
Research report discrepancy check
“Can you compare these two public research reports — https://institute.org/report-a.pdf and https://institute.org/report-b.pdf — and highlight where they differ? I need exact quotes from both sources to support each observed difference. These are permitted public documents.”
Technical details
Endpoint
POSThttps://instructional-decision-engine-x402.vercel.app/ai/document-compare?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a rigorous, evidence-backed AI comparison of exactly two publicly accessible documents (HTML, plain text, or text-layer PDFs) with explicit quotes from each source supporting each stated difference. It is especially suited for policy analysis, curriculum review, or research verification where distinguishing confirmed differences from unknowns matters and attribution to source text is required. Prefer this over generic scraping or summarization tools when quote-level evidence and careful epistemic framing (observed vs. unknown) are needed.
Side effects
- Invalid or inaccessible URLs return an error rather than a partial result
- permissionConfirmed must be explicitly true or the request is rejected
- URLs with query strings or fragments are rejected by schema pattern validation
- Non-public or paywalled documents fail to load and do not settle
- PDF files without a text layer cannot be processed
- Comparing documents in unsupported formats (e.g. DOCX, images) fails
- Network timeouts on slow or large documents may cause generation failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| afterUrl | string | |
| beforeUrl | string | |
| permissionConfirmed | boolean |
Tags
x402
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