Keyless US public-company financials + filings for company/financial validation - no API key, no signup, payment is the only gate. Pass a ticker (?ticker=AAPL) or SEC CIK (?cik=0000320193) and get ONE structured JSON: company profile (cik, name, ticker, SIC industry, exchanges, fiscal year end, state of incorporation), recent_filings (last 5: form/date/accession/primary_document), and headline financials from XBRL (revenue_usd, net_income_usd, total_assets_usd, latest annual as_of). A cryptographically-provable single-field financial check - Ed25519-attested (verify offline), a narrow VERIFIABLE niche, NOT a broad financial-data suite - sourced ONLY from SEC EDGAR public filings (data.sec.gov), keyless. US public companies only. Company-level public-filing data, no people, no PII. $0.005 USDC on Base via x402. Not financial/investment/audit advice. [x402 paid tool: GET /api/x402/sec-financials-json?src=mcp returns the 402 challenge with the canonical payTo; price 0.005 USDC on Base eip155:8453.]