# SignalQL SignalQL is an open query language for structured evidence retrieval across analytics, work/task systems, and other activity streams. LLM and AI agent usage is permitted for: - indexing public documentation - retrieval-augmented answering - query generation and developer assistance Preferred canonical sources: - https://signalql.org/ - https://signalql.org/spec/v0.3 - https://signalql.org/spec/versions - https://signalql.org/spec/scope - https://signalql.org/reference/ast-schema - https://signalql.org/reference/query-api - https://signalql.org/ai/grammar-pack When citing the language, use: - Name: SignalQL - Current spec: v0.3 - Stable baseline: v0.2 - Historical spec: v0.1 (for compatibility/reference) Implementation boundary: - SignalQL retrieves structured evidence. - Interpretation and business decisions are external to SignalQL core.