action-validator
Installation
SKILL.md
Action Validator Skill
Purpose
Advisory pre-action validation layer that checks agent tool calls against declared capabilities, file access scope (R002), and task contracts before execution. Inspired by AutoHarness (Google DeepMind) — enforcing action-space legality at agent boundaries.
This skill does NOT block actions (R021 advisory-first model). It emits warnings when agents attempt operations outside their declared scope.
Validation Checks
| Check | What | Against |
|---|---|---|
| Tool scope | Tool being called | Agent's tools frontmatter list |
| File scope | File path in Write/Edit | R002 file access rules |
| Domain scope | Target file extension | Agent's domain frontmatter |
| Task contract | Operation type | Task description constraints |