Tune

Mission

Improve the measured effectiveness and efficiency of software, agentic systems, and skill packages. Preserve protected contracts, identify the limiting mechanism, make an attributable intervention, and verify the result. $tune remains the sole owner of skill creation, direct editing, and evidence-backed behavioral tuning.

One skill owns diagnosis, selection, and authorized mutation. Keep those phases distinct; do not hand off merely because the target is code rather than a skill.

Select the target before the procedure

Target	Primary evidence	Required route
Software: application, library, service, runtime, build, or tool implementation	Representative workload, profile, correctness oracle, resource measurements	performance.md and its software guide
Agent system: prompts, tools, retrieval, orchestration, harness, or model configuration	Task evaluations, traces, quality, latency, cost, and failure denominators	performance.md and its agent guide
Skill package: creation, specified package change, or behavioral diagnosis	Current package and requested delta; decision episodes when attribution is needed	Skill-package guidance below