# Hexis: a fixed 64-state structure for governing cognitive disposition in language-model agents

From: Hexis: a fixed 64-state structure for governing cognitive disposition in language-model agents. Simon Herko (何根初) and Chris Pidcock. Version 1.0, 15 October 2026.

Reading copy. Version of record: https://doi.org/10.5281/zenodo.23393632. If this copy and the version of record differ, the version of record governs. Licence: CC BY 4.0, https://creativecommons.org/licenses/by/4.0/.

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Each file below is one chapter of the paper, sized for tools that cut off long pages. Read them in order, or open the chapter you need. The full paper in one file: https://trigrammatic.com/papers/hexis-v1.0.md

- Abstract: https://trigrammatic.com/papers/hexis-v1.0/chapters/abstract.md
- U1. Introduction: when should an AI agent act?: https://trigrammatic.com/papers/hexis-v1.0/chapters/u1.md
- U2. The structure Hexis adopts: https://trigrammatic.com/papers/hexis-v1.0/chapters/u2.md
- U3. Planning, monitoring and recall: https://trigrammatic.com/papers/hexis-v1.0/chapters/u3.md
- U4. A tradition of changing interpretations: https://trigrammatic.com/papers/hexis-v1.0/chapters/u4.md
- U5. Structural results and the execution boundary: https://trigrammatic.com/papers/hexis-v1.0/chapters/u5.md
- U6. Interdisciplinary foundations and their limits: https://trigrammatic.com/papers/hexis-v1.0/chapters/u6.md
- U7. The proposed Hexis architecture: https://trigrammatic.com/papers/hexis-v1.0/chapters/u7.md
- U8. Claims and tests that could refute them: https://trigrammatic.com/papers/hexis-v1.0/chapters/u8.md
- L1. Measuring timely and appropriate action: https://trigrammatic.com/papers/hexis-v1.0/chapters/l1.md
- L2. Pre-registration and measurement discipline: https://trigrammatic.com/papers/hexis-v1.0/chapters/l2.md
- L3. Engineering value and adoption: https://trigrammatic.com/papers/hexis-v1.0/chapters/l3.md
- L4. Safety, governance and affected parties: https://trigrammatic.com/papers/hexis-v1.0/chapters/l4.md
- L5. Open contributions and reusable components: https://trigrammatic.com/papers/hexis-v1.0/chapters/l5.md
- L6. Related work and competing explanations: https://trigrammatic.com/papers/hexis-v1.0/chapters/l6.md
- L7. Scope, uncertainty and ethical limits: https://trigrammatic.com/papers/hexis-v1.0/chapters/l7.md
- L8. Roadmap, replication and openness: https://trigrammatic.com/papers/hexis-v1.0/chapters/l8.md
- Contributions, acknowledgements, glossary and references: https://trigrammatic.com/papers/hexis-v1.0/chapters/contributions-acknowledgements-glossary-and-references.md
- Glossary: https://trigrammatic.com/papers/hexis-v1.0/chapters/glossary.md
- References: https://trigrammatic.com/papers/hexis-v1.0/chapters/references.md