Agent Skill
Investigate First skill
investigate-firstJuliusBrussee/cavemanskills/investigate-first/SKILL.md
Diagnose ambiguous failures before editing. Use for unknown causes, intermittent behavior, performance regressions, or investigations needing evidence-ranked hypotheses.
always on
29 tokname + description
once used
84 tokSKILL.md body
bundled files
11 KB
installs
101kskills.sh
Install the Investigate First skill
Skills CLI (Claude Code, Codex, Cursor and others)
npx skills add https://github.com/JuliusBrussee/caveman --skill investigate-first
Claude Code, by hand (all projects)
git clone --depth 1 https://github.com/JuliusBrussee/caveman.git /tmp/caveman mkdir -p ~/.claude/skills cp -R /tmp/caveman/skills/investigate-first ~/.claude/skills/investigate-first
For one project only, copy the folder into .claude/skills/ in that project instead. The agent picks it up when a task matches its description.
What it costs your context
Agent Skills load in three steps. Tokens counted with the o200k tokenizer; your model's count will differ a little.
| When | What loads | Cost |
|---|---|---|
| Every session | Name and description | 29 tok |
| When the agent uses it | The SKILL.md instructions | 84 tok |
| Only if opened | 1 bundled files (1 KB) | varies |
Until it is used, investigate-first costs about 47× less than the median MCP server we measured (1,362 tokens on every turn). Installing all 28 skills from JuliusBrussee/caveman would load 1,303 tokens of descriptions. Skills vs MCP study
Checks
Our checks found nothing to flag: it follows the Agent Skills specification's naming and size guidelines and doesn't pipe downloads into a shell.
Checked 2026-10-22 · method
What's inside
The headings of its SKILL.md. Read the full file on GitHub.
- Investigate first
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