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product changelog

What changed

A concise record of shipped improvements. Future work lives in GitHub Issues; this page covers verified product outcomes only.

A clearer, product-owned intelligence loop

  • Daily Brief publishing was verified across twelve consecutive days, with a populated five-section brief and 25–33 publishable signals per day in the latest audited window.
  • AI visibility analysis now uses the shared Fleet evaluation package while High Signal continues to own its sources, evidence, schedules, reports, and customer experience.

12,964 source-backed company profiles

  • The company universe now draws only from official YC, Antler, a16z, and Techstars directories and preserves first-party evidence for every company.
  • Search, filters, company pages, and reciprocal competitor links make the directory useful without hiding how each result was assembled.

Delivery, watchlists, and mention reports became dependable

  • Private RSS, Atom, and compact JSON brief feeds joined retryable email delivery, with owner-scoped failure recovery and explicit retry timing.
  • Watched entities now influence signed-in briefs through evidence-backed direct and spillover impacts, while mention reports support controlled sharing.

A public library of company case studies

  • High Signal added browsable, searchable company profiles with source evidence, competitor context, and stable pages that can be cited and shared.