skillkit

name	skillkit
version	0.10.4
description	Local-first analytics for AI agent skills. Use when user asks about skill usage, analytics, health, context budget, cost/burn rate, trigger conflicts, dead weight analysis, or wants to clean up unused skills.

SkillKit

Production observability for AI agent skills. Monitors usage, detects conflicts, analyzes cost, and prunes what you don't use.

Commands

SkillKit is a standalone CLI. Run with bunx @crafter/skillkit <command> or install globally (bun i -g @crafter/skillkit).

Usage & Budget

• skillkit scan - Discover skills + index session data (auto-runs on first use)
• skillkit scan --include-commands - Also track slash commands (not just skills)
• skillkit stats - Usage analytics with sparklines, streak count, weekly velocity (last 30 days)
• skillkit stats --all --days 90 - Full list over 90 days
• skillkit stats --json - JSON output
• skillkit list - Installed skills with size and context budget
• skillkit health - Unused skills + metadata budget check
• skillkit health --json - JSON output

Sessions & Activity

• skillkit sessions - Daily usage across all agents
• skillkit graph - 52-week contribution heatmap
• skillkit graph --json - JSON output
• skillkit auto - Auto-scan after Claude Code sessions (SessionEnd hook)

Cost Analysis

• skillkit context - Context tax: tokens + cost of CLAUDE.md, skills, memory per API call
• skillkit context --sonnet --turns 60 - Custom model pricing and session length (default: sonnet)
• skillkit context --opus / --haiku - Other model pricing
• skillkit context --json - JSON output
• skillkit burn - Subscription burn rate analysis (cost, models, daily)
• skillkit burn --days 7 - Custom range
• skillkit burn --plan 200 - Monthly plan cost in USD (default: 200)
• skillkit burn --json - JSON output

Quality & Conflicts

• skillkit conflicts - Detect trigger collisions between skills
• skillkit coverage <skill-path> - Find dead weight (unreferenced sections + files)

Cleanup

• skillkit prune - List unused skills
• skillkit prune --yes - Confirm deletion
• skillkit prune --skill <name> - Prune a single skill
• skillkit prune --yes --json - Confirm and output JSON

Trace (Internal)

• skillkit trace <prompt> - Record skill execution trace (powers conflicts + coverage)
• skillkit trace --list - List recent traces
• skillkit trace --list --json - List recent traces as JSON
• skillkit trace --show <id> - Show trace details
• skillkit trace --model <model> - Model to use for trace

Agent Filters

Any command accepts agent filters: --claude, --cursor, --codex, --gemini, --windsurf, --amp, --goose, --kiro, --roo, --opencode

When to Use

• "which skills do I use the most?" -> skillkit stats
• "are there unused skills?" -> skillkit health then skillkit prune
• "what's my context tax?" -> skillkit context
• "how much am I spending?" -> skillkit burn
• "do any skills conflict?" -> skillkit conflicts
• "is this skill bloated?" -> skillkit coverage <path>
• "show my activity heatmap" -> skillkit graph
• "daily usage breakdown" -> skillkit sessions

Decision Guide

1. First time? skillkit stats -- auto-discovers and indexes everything
2. Full picture? skillkit stats --all --days 90
3. Activity? skillkit sessions then skillkit graph
4. Context tax? skillkit context
5. Cost check? skillkit burn
6. Conflicts? skillkit conflicts
7. Dead weight? skillkit coverage ~/.claude/skills/my-skill/
8. Cleanup? skillkit health then skillkit prune --yes

How It Works

Discovers skills across 12 agents: Claude Code, Cursor, Codex, Gemini CLI, Windsurf, Amp, Continue, Goose, Kiro, Roo Code, Antigravity, OpenCode. Session connectors parse JSONL/JSON traces for Claude, Cursor, Codex, Gemini, and OpenCode. Deduplicates skills by name and inode. Self-healing DB deduplication on open. All data local in ~/.skillkit/analytics.db. Plan config stored in ~/.skillkit/config.json.