# Darbs Signal (DARBS) > Quantitative verification engine filtering public market data and institutional flows into single-composite rating indexes for stocks, crypto, and macroeconomic assets. ## Core Resources - [API Documentation](https://darbsignal.com/docs/api): RESTful JSON endpoints for real-time market signals, composite scores, and factor breakdowns. - [OpenAPI Specification](https://darbsignal.com/docs/api/openapi.json): Complete OpenAPI 3.1 schema definition. - [API Catalog](https://darbsignal.com/.well-known/api-catalog): RFC 9727 API catalog discovery linkset. - [Agent Skills](https://darbsignal.com/.well-known/agent-skills/index.json): Reusable agent skill packages and MCP integration specs. - [Model Context Protocol Server Card](https://darbsignal.com/.well-known/mcp/server-card.json): SEP-1649 / SEP-2127 server definition. - [Authentication Guide](https://darbsignal.com/auth.md): Agent authentication and API token specifications. - [Market News & Research](https://darbsignal.com/#blog): Real-time analysis of AI capex, interest rates, Bitcoin ETF flows, Big Tech earnings, clean energy, and 0DTE options microstructure. ## Key APIs - `GET /api/v1/signals/{symbol}`: Returns composite Darbs Score (0-100), directional bias (LONG / SHORT / WAIT), price, and 4-factor breakdown. - `GET /api/health`: Health status and engine status. - `POST /api/apply`: Submit beta access application.