Investigate

by catlog22

Investigate is a Quality skill for Claude Code, published by catlog22 in Claude-Code-Workflow.

2.1K stars164 forkson catlog22/Claude-Code-WorkflowAdded 2026/08/18Repository updated 2026/06/18

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claudeclaude-codecli-toolscodexcontext-managementgemini-clijson-drivenqwen-codetask-orchestrationworkflow-automation

Install in seconds

Install Investigate

Copy Investigate into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/catlog22/Claude-Code-Workflow/tree/main/.claude/skills/investigate ~/.claude/skills/investigate

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/catlog22/Claude-Code-Workflow.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: .claude/skills/investigate/SKILL.md in catlog22/Claude-Code-Workflow
Installs to: ~/.claude/skills/investigate
Collection: One of 25 skills cataloged from this repository
Category: Quality — 1354 skills

What Investigate does

Investigate is a systematic debugging skill that enforces the Iron Law: never fix without a confirmed root cause. It walks through 5 phases from evidence collection to verified fix, producing structured debug reports.

Investigate is cataloged under Quality on DirSkills. Investigate comes from a repository tagged claude, claude-code, cli-tools, codex and context-management.

Documentation

README

Excerpt

Investigate

Systematic debugging skill that enforces the Iron Law: never fix without a confirmed root cause. Produces a structured debug report with full evidence chain, minimal fix, and regression test.

Iron Law Principle

No fix without confirmed root cause. Every investigation follows a strict evidence chain:

Reproduce the bug with concrete evidence
Analyze patterns to assess scope
Form and test hypotheses (max 3 strikes)
Implement minimal fix ONLY after root cause is confirmed
Verify fix and generate structured report

Violation of the Iron Law (skipping to Phase 4 without Phase 3 confirmation) is prohibited.

This is the opening of the README. Read the full README on GitHub.

Frequently asked about Investigate

What else does catlog22 publish alongside Investigate?
Investigate is one of 25 skills that DirSkills catalogs from catlog22/Claude-Code-Workflow, the repository it ships in. Its siblings there include Brainstorm, CCW Chain and CCW Help. Each one is a separate skill with its own page in this directory, installs the same way Investigate does, and is maintained by catlog22 in that same repository. The rest of the collection is listed on the catlog22/Claude-Code-Workflow page.
How does Investigate compare to other Quality skills?
Investigate ranks #553 by stars among the 1354 Quality skills in this catalog. The most-starred ones next to it are Benchmark, Benchmark Optimization Loop and API Design Patterns. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Investigate against them. Open each page to compare what they document and how they install.