Canonical taxonomy enforced by /api/public/ingest/news. Fetch the JSON version at /api/public/spec/classification.
Send the exact key in the flag field. Anything else is queued for admin review and not published.
S-1 filings, direct listings, de-SPAC, first-day pops, lockup expiries.
Definitive acquisitions, takeovers, divestitures, buyouts, asset sales, structural merger closes.
JVs, supply agreements (e.g. compute / spectrum / hardware), integrations, co-development, channel deals.
Venture rounds, private debt, secondaries (private), grants, government co-investment structured as a round.
Government is a PARTY: agency contract awards, export controls, sanctions, legislation, executive orders, rulemaking.
New product unveilings, GA releases, major version launches, hardware reveals, facility openings that ship a product.
Scientific results, clinical readouts, R&D firsts, technical world-firsts (e.g. net-positive fusion, first orbital catch).
FDA, FAA, NRC, EU AI Act, EPA, SEC enforcement, Nasdaq compliance — approvals, denials, sanctions, recalls, deadlines.
Quarterly/annual results, guidance changes, KPI disclosures, pre-announcements (SEC 8-K item 2.02).
Chapter 11, going-concern, fatal incidents, disclosed-scope security breach, layoffs ≥5%, short-seller report, federal investigation, major outage.
Boardroom and balance sheet: board and proxy outcomes, entity or segment changes, executive appointments and departures, dividends, buybacks, treasury purchases, credit facilities, committed capex, and 5%+ beneficial-owner or activist stakes.
Awards, index and list placements, analyst leader positions, substantial third-party profiles, executive essays and keynotes, and community or CSR activity.
Required on every item. No default.
Original reporting, regulatory filings, or official company disclosure.
Reuters, Bloomberg, FT, WSJ, NYT, SEC EDGAR, FDA/FAA/NRC releases, company IR, Nature, Science
Solid trade press or analyst coverage; may aggregate Tier A but adds reporting.
TechCrunch, The Information, Axios, Ars Technica, IEEE Spectrum, SpaceNews, Endpoints, CNBC
Signal-only; requires corroboration before trusting standalone.
Substacks, Medium, Reddit, X threads, PR wires (unless original), niche blogs
Set is_big_event: true only if at least one applies. Items without structured evidence pass through but are flagged in classification_warnings.
Codes you may include in notes[]. The server may also auto-append SINGLE_PAYWALLED_SOURCE and SINGLE_SOURCE_TIER_C.