| name | utk |
| description | Use when installing, operating, recovering, or extending Universal Token Killer for GitHub Copilot tool-hook mediation, .utk artifacts, serializer configuration, schema routing, compact tool-output recovery, or RTK-parity token optimization |
UTK Tool-Hook Compression
Use this skill when installing, operating, or recovering Universal Token Killer (UTK) for GitHub Copilot tool-hook mediation.
UTK is hook-first. Do not expose mediation as a public CLI or VS Code extension. It observes shell and non-shell tool calls when the Copilot hook event includes enough input/output to mediate safely, persists raw artifacts under .utk/, infers schemas, routes by schema history, and returns compact references. The local detok MCP helper is only for LLMLingua-2 text rewriting.
References
references/copilot-hooks.md: hook event handling and pass-through rules.references/configuration.md: .utk/config.toml serializer and routing settings.references/artifact-recovery.md: raw output, compact serialization, schema, and route artifact locations.references/schema-route-summaries.md: schema routing and constrained fallback summary.
