secfilingdex

EDGAR's database, modernized.

Programmatic database surface over SEC EDGAR filings. Comprehensive indexing across 10-K / 10-Q / 8-K / 13F / 13D/G / S-1 / Proxy / Form 4 / 20-F / 6-K and friends, with cross-filer relationship graph, filing-diff visualization, and citation-grade structured-data API for LLM agents.

Stack

• Next.js 15.0.3 (static export)
• React 19 RC
• Tailwind 3.4
• TypeScript 5.6
• Cloudflare Pages (deploy via wrangler)
• Satori (OG images)
• IndexNow (search-engine direct ping)

Status

Day 0 — folder prepared 2026-04-28. Domain registered Cloudflare. First public ship targeting Day 7 per .claude/state/BUILD_SPEC.md.

Local dev

npm install
npm run dev          # localhost:3000
npm run build        # static export to out/
npm run deploy       # build + wrangler deploy + indexnow ping
npm run fetch-edgar  # pull latest SEC EDGAR filings index (no API key needed)

Architecture

• Static export (output: 'export') — every page prebuilt at deploy time
• MANUAL data ingest — scripts/fetch-edgar.ts pulls SEC EDGAR data into data/filings/*.json. ⚠️ It is not wired into prebuild, build, deploy or CI: you must run npm run fetch-edgar and commit the result. (This line used to claim build-time fetching. It was never true, and that false belief is why the corpus silently froze from 2026-09-11 to 2026-09-23 while the site kept deploying a "Live" label over an 11-day-old snapshot.) prebuild now runs scripts/check-data-freshness.mjs, which WARNS in the build log when the newest filing is >2 business days old.
• Per-page JSON twin — every programmatic page has /api/[slug].json for bot/LLM consumption
• No backend, no DB, no auth — finite public dataset, all client-side filter for search

Data source

SEC EDGAR — public, no API key required for filings index. Identify with User-Agent: SecFilingDex hello@caslonmedia.com per SEC guidance (must be a reachable address; see scripts/fetch-edgar.ts). Rate limit: 10 req/sec/IP.

Fleet context

Sibling site: holdlens.com — same data source, different lens. HoldLens is signal-spectrum on superinvestor 13Fs (ranking lens). SecFilingDex is comprehensive filing database (search + lookup lens). Both citation-link each other.

License

All site code: proprietary. Indexed SEC filings: public domain (US government works are not subject to copyright in the US per 17 U.S.C. § 105).

Related

• .claude/state/IDENTITY.md — operator + brand + positioning
• .claude/state/BUILD_SPEC.md — Day 1-7 ship plan
• .claude/state/KNOWLEDGE.md — verified SEC/EDGAR facts
• CLAUDE.md — AcePilot project spec