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SEC Filing Proof Verifier
x402
SEC Filing Proof Verifier is a paid API for AI agents from sec-filing-proof.mattskowronis.workers.dev, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).
Verifies whether an official SEC filing (10-K, 10-Q, XBRL) supports, contradicts, or provides insufficient evidence for a specific financial claim about a company.
Price / call$0.05
Success—
StatusUnknown
How this service works
Verify whether an official SEC filing supports a financial claim. Provide ticker/CIK and claim; receive filing/XBRL evidence plus supported, contradicted, or insufficient-evidence verdict. 10-Q / 10-K / XBRL fact verification. Not a data feed, stock picker, or investment advice.
Output
Returns a structured verdict indicating whether the SEC filing evidence 'supported', 'contradicted', or provided 'insufficient evidence' for the claim, along with specific XBRL facts and filing references (e.g. form type, period) that back the determination.
Example use cases
Fact-checking analyst revenue claim
“I've seen a report claiming Tesla had operating income of $8.9 billion in 2023 — can you check whether that claim is actually supported by their official SEC 10-K filing? Their ticker is TSLA.”
Verifying earnings before investment decision
“Before I make a decision, can you verify the claim that Microsoft reported cloud segment revenue of $87.9 billion for fiscal year 2023 against their actual SEC filing? Ticker is MSFT.”
Checking debt figure for due diligence
“I need to fact-check a claim that AMC Networks (ticker AMCX) had long-term debt of $2.7 billion as of their last 10-Q — can you confirm if their SEC filing actually supports that?”
Technical details
Endpoint
POSThttps://sec-filing-proof.mattskowronis.workers.dev/v1/verifyWhen to prefer
Choose this endpoint when you need an authoritative, evidence-backed verdict on whether a specific financial claim is consistent with what a company actually reported to the SEC. It is the right tool when accuracy and traceability to official regulatory filings matter — such as investment research, compliance reviews, journalism fact-checking, or due diligence — rather than a general financial data feed or stock analysis tool. Prefer this over general financial APIs when you need a true/false/uncertain verdict with cited evidence rather than raw data retrieval.
Side effects
- Ticker or CIK not found in SEC EDGAR — returns an error indicating unrecognized issuer
- Claim is too vague or compound — may return insufficient-evidence verdict due to ambiguity
- No relevant 10-K or 10-Q filing found for the requested period — insufficient evidence returned
- XBRL data not available for the filing — verification may fall back to text-based evidence only
- Claim references a future projection rather than a reported figure — may not be verifiable
- Malformed input (claim too short, invalid CIK format) — returns validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| cik | string | SEC Central Index Key. Provide ticker or CIK. |
| claim | string | One atomic financial claim to check against official SEC filings. |
| ticker | string | Issuer ticker symbol. Provide ticker or CIK. |
Tags
x402
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