# microon > microon is an open specification for knowledge that AI agents can trust — quads that carry their context: layer, time window, origin. Whether a fact is current, who asserted it, and whether an agent may change it are queries against the same store. Five principles are normative; everything else is implementation-defined. Stewarded by PDAT (https://pdat.cz). ## Specification - [Specification (English, canonical)](https://microon.org/spec/index.md): the quad, the five principles, the layer set, the minimal operation set, non-normative conventions - [Specifikace (Czech)](https://microon.org/cs/spec/index.md) ## Full content - [llms-full.txt](https://microon.org/llms-full.txt): site overview plus the complete specification in one plain-text file ## Implementations - pda-lore (Go, SQLite, NATS) — reference implementation by PDAT - WHW MicroOn Store (PostgreSQL) — independent implementation