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Signal Nodus SEC Filing Diff
x402
Signal Nodus SEC Filing Diff is a paid API for AI agents from api.signalnodus.ai, paid per call via x402, $0.5/call, status unknown (last checked 2026-09-14).
Returns year-over-year text diffs of specific SEC filing sections, comparing added and removed content between filings pinned to accession numbers.
Price / call$0.5
Success—
StatusUnknown
How this service works
Signal Nodus: year-over-year diffs of SEC filing sections, pinned to accession numbers. The diff is the product; raw data is the on-ramp.
Output
A JSON object containing an array of added text lines, an array of removed text lines, and a summary object with counts of added, removed, and unchanged lines plus a changeRatio (e.g. 0.325 means 32.5% of the section changed). All diffs are anchored to specific SEC accession numbers for reproducibility.
Example use cases
Track risk factor language shifts
“Pull the year-over-year diff for Microsoft's 10-K risk factors section and tell me what new risks they added or removed compared to the prior filing.”
Due diligence on acquisition target
“I'm doing due diligence on Nvidia — can you compare their most recent 10-K MD&A section against the previous year's and highlight everything that was added or removed?”
Compliance audit of disclosure changes
“We need to audit how much our client's 10-Q liquidity disclosures changed between this quarter and the same quarter last year — get me the full diff with the change ratio.”
Technical details
Endpoint
GEThttps://api.signalnodus.ai/v1/compareWhen to prefer
Choose this endpoint when you need structured, reproducible year-over-year text diffs of specific SEC filing sections anchored to accession numbers. It is the right choice for investment research, compliance auditing, or change detection workflows where you need to know exactly what language was added or removed — not just a summary. Prefer it over general SEC EDGAR scrapers when you need a clean diff format with change metrics rather than raw filing text.
Side effects
- Invalid or nonexistent accession number returns an error
- Filing section not available for the specified accession number
- Rate limiting or payment failure if x402 payment is not properly handled
- Accession numbers from non-comparable filing types may produce misleading diffs
- Network timeout for very large filing sections
Output
Schema · Response
{
"type": "json",
"example": {
"added": [
"..."
],
"removed": [
"..."
],
"summary": {
"added": 161,
"removed": 141,
"unchanged": 335,
"changeRatio": 0.325
}
}
}Tags
x402
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