# SEC Filing Proof Verifier

> 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 2026-09-16).

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.

## Facts

- Endpoint: POST https://sec-filing-proof.mattskowronis.workers.dev/v1/verify
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sec-filing-proof-verifier-9f16aaab
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_J-UukFqqf5IIYDCKdG3eB

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability sec-filing-proof-verifier-9f16aaab -d '<json body>'
```

Example prompt: Can you verify whether Apple's (ticker: AAPL) claim that they reported $383 billion in total revenue for fiscal year 2023 is actually supported by their official SEC 10-K filing?

## When to prefer this

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.

## Known failure modes

- 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

## 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.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "cik": {
   "type": "string",
   "maxLength": 10,
   "description": "SEC Central Index Key. Provide ticker or CIK."
  },
  "claim": {
   "type": "string",
   "maxLength": 500,
   "minLength": 3,
   "description": "One atomic financial claim to check against official SEC filings."
  },
  "ticker": {
   "type": "string",
   "maxLength": 12,
   "description": "Issuer ticker symbol. Provide ticker or CIK."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sec-filing-proof-verifier-9f16aaab/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from sec-filing-proof.mattskowronis.workers.dev](https://www.zero.xyz/host/sec-filing-proof.mattskowronis.workers.dev/llms.txt)