Skill Evolution Validation Contract
Goal
Define what a skill evolution experiment and its validation evidence must satisfy to be considered governed by AletheIA.
This contract specifies; it does not explain. For conceptual background see governed-skill-optimization.md. The execution surface (validation cases, experiments, validator) lives in the Adaptive Skills repository; this contract governs the decision, not the execution.
Principles
- Optimization is evidence, not authority. An experiment may produce evidence, a comparison, or a recommendation — never a canonical change.
- Governance outranks optimization. No experimental result overrides AletheIA contracts, the Knowledge Governance Layer, or human review.
- Synthetic-first. Validation evidence uses synthetic, public, or explicitly authorized material only.
- Regression matters. A change is acceptable only if it improves the target case without degrading cases already covered.
Normative requirements
Evidence
- R1. Every experiment MUST reference at least one validation case.
- R2. Every validation case MUST declare
sensitivityusing the canonical taxonomy in sensitivity-vocabulary-mapping.md. - R3. Validation cases with sensitivity
confidential,restricted, orregulatedMUST be synthetic-or-capsule only: no raw governed content may appear in any experiment artifact (trace, prompt, example, export). This is bound by restricted-knowledge-usage-policy.md. - R4. Every experiment MUST reference the skill it targets, and that skill MUST exist.
Surfaces
- R5. An experiment’s candidate change MUST target a non-protected skill surface. Protected surfaces (skill identity, purpose, when-to-use boundaries, core moves, taxonomy) MUST NOT be altered by experimental result.
- R6. If an experiment claims to touch a protected surface, it MUST set
human_review_required: true. - R7. No experiment MAY write to a canonical skill document. Auto-writeback is forbidden.
Outcomes
- R8. An experiment’s recommendation MAY only be evidence-level — for example
reinforced,no-change,proposal-created,defer, orrejected. It MUST NOT beapprovedormerged. - R9. The strongest authorized outcome is the creation of a proposal in the Evolution Layer. Promotion beyond a proposal MUST follow human review and a pull request.
- R10.
reinforcedandno-changeare valid, acceptable outcomes — confirming current behavior is governed evidence, not a failure.
Knowledge-aware skills
- R11. Any experiment involving a knowledge-aware skill MUST set
human_review_required: true. - R12. Governed sources MAY appear in such experiments only as simulated metadata or a fictional capsule — never as a copied excerpt of a real source.
Work Slice learning bridge
AletheIA may observe a reusable learning during Work Slice closure or restart review. That learning can become an Adaptive Skills evolution signal only as evidence, never as a direct catalog change.
Before routing a Work Slice learning toward Adaptive Skills, a reviewer must classify it as one of:
observe_only— keep as AletheIA evidence; not ready for Adaptive Skills.validation_case_candidate— convert into a reproducible expectation before any experiment.module_candidate— repeated evidence suggests an optional module may be missing.skill_update_candidate— an existing skill may need a trigger, verification, anti-pattern, template or example adjustment.new_skill_candidate— repeated evidence suggests the current skill boundary may be insufficient.
The routing decision must preserve:
- source Work Slice or Restart Package refs;
- the distilled learning in user-facing language;
- evidence quality and confidence;
- whether the pattern is local, possibly generalizable or generalizable;
- human review requirement;
- technical review requirement;
- the next Adaptive Skills surface, if any.
This bridge does not authorize automatic skill mutation, memory writeback, proposal approval, canonical schema adoption or repository writes. The strongest immediate outcome remains an evidence record or proposal candidate that must follow the authorized flow below.
The authorized flow
Observation → Validation Case → Experiment → Regression Check
→ Proposal → Human Review → Pull Request → Canonical Skill Update
Everything up to and including the experiment is evidence. Everything after the proposal is human authority.
Conformance
A skill evolution experiment is conformant when R1–R12 hold. The Adaptive Skills repository SHOULD enforce the structural subset of these requirements automatically (a dependency-free validator) and leave the judgment subset — whether the evidence is strong enough — to human review. AletheIA does not execute the validator; it requires that conformance be demonstrable before a derived change is accepted.
Relationship to other contracts
- restricted-knowledge-usage-policy.md — binds R3, R12.
- sensitivity-vocabulary-mapping.md — defines the taxonomy R2 uses.
- skill-knowledge-dependency-contract.md — how a skill declares knowledge needs; experiments must not bypass it.
- knowledge-audit-log-spec.md — audit fields when a governed source influences output.