API Changelog
Release notes for the Signal8 public API — new endpoints, behavioral changes, fixes, and deprecations. For the full endpoint reference, see the API documentation.
Added
- AddedPublic REST API at https://api.signal8.ai — programmatic access to AI-extracted SEC filing intelligence.
- AddedEndpoint groups: Companies, Extractions, Dilution, Intelligence, Compliance, Screener, Events, and ATM.
- AddedAPI-key authentication via the X-Api-Key header (the Authorization: Bearer sk_live_* form is also accepted).
- AddedPer-minute and per-day rate limits scoped by subscription tier, surfaced on every response via X-RateLimit-* and X-DailyLimit-* headers.
- AddedSignal8 MCP server for Claude, Cursor, and other MCP clients — connect to the hosted endpoint at https://mcp.signal8.ai/mcp or run it locally with npx @signal8ai/mcp.
