API Reference
Complete documentation for all endpoints. Base URL: https://research.usegalen.com/api/v1
All requests require an X-API-Key header. Get your free API key →
Knowledge Graph
Search, explore, and traverse 855,000+ cancer biology entities and 7.7 million relationships — every one traced to its original data source with a Pearl Causal Hierarchy layer.
Databases
Query 10+ integrated biomedical databases through a unified API — real experimental measurements, not LLM interpretations.
Causal Inference
Simulate interventions, run do-calculus queries, and explore counterfactual scenarios using formal Pearl causal inference over a Structural Causal Model.
Predictions
Predict drug responses, gene essentiality, and mutation effects — each prediction grounded in experimental data with confidence scores and independent verification.
Hypotheses
Discover knowledge gaps and explore the frontier of cancer biology — algorithmically identifying where new experiments would have the highest impact.
Patient Interpretation
Interpret multi-mutation profiles, find evidence-based treatments, analyze resistance mechanisms, and match clinical trials.
System
Health checks, system statistics, data source information, and real-time monitoring of Galen's autonomous learning progress.