Best Developer Tools Skills for Claude Code
Skills for debugging, testing, code review, and engineering workflow. Each one has been evaluated on six dimensions with written rationale — the full scorecard lives on its detail page.
Reference for the Claude API / Anthropic SDK — model ids, pricing, params, streaming, tool use, M…
Comprehensive official Claude API reference with explicit TRIGGER/SKIP rules, per-language docs, drift tables and a precise reading guide; only cost is a 570-line SKILL.md.
Extracts resources and JavaScript from any installed Electron app (`.asar` bundle), restoring ori…
Outstanding tool-wrapper skill: bilingual trigger phrases, dry-run mode, output-dir safety guards, path-traversal protection, source-map restoration with unit tests, JSON and report output; only npx on-the-fly installs add minor supply-chain exposure.
Establishes a project's quality bar as a written contract and stops agents quietly lowering it. I…
Outstanding skill: rich trigger description with When-Not, seven-step process with defaults, ratchets, escalation path, and an offloaded floor-guard reference implementation with exit-code contract; security-aware throughout.
Create polished, validated architecture, workflow, sequence, data-flow, and lifecycle/state diagr…
Impressive pipeline skill with a 5-type diagram generator, validate/deliver/visual-check acceptance chain, and strict truthfulness guards; docked for a bloated 9.4MB package with full test suite and some over-dense prose.
Analyzes code diffs and files to identify bugs, security vulnerabilities (SQL injection, XSS, ins…
Excellent reviewer skill: intent-summarization checkpoint, two-stage spec-then-quality review architecture, prioritized report with verdict, allowed-tools scoped to read-only; only lacks an explicit When-Not trigger boundary.
Use when implementing infrastructure as code with Terraform across AWS, Azure, or GCP. Invoke for…
Outstanding IaC skill: validation re-run loops, explicit user-approval gate before terraform apply with refusal on unaccepted destructive changes, and a dedicated error-recovery matrix for drift, auth, and dependency failures.
Extracts what the user actually wants instead of what they think they should want. Achieves this …
Outstanding interactive elicitation skill: hypothesis-with-confidence format, one-question-at-a-time rules, explicit-yes gate, non-interactive guard, and checkable stop condition; near-production-quality with no real weaknesses.
Generate and validate music with Google Lyria 3 through the Gemini Interactions API. Use before c…
Excellent procedural wrapper: approval-before-spend workflow, model selection table, ffprobe verification, credential hygiene and a quality checklist. Only minor trigger-boundary gaps.
Use when building CLI tools, implementing argument parsing, or adding interactive prompts. Invoke…
Excellent CLI specialist: five-step workflow with --help/--version verification, startup-time benchmark target, TTY/SIGINT handling constraints and five load-when references; only lacks an explicit When-Not trigger boundary.
Generates, formats, and validates technical documentation — including docstrings, OpenAPI/Swagger…
Excellent documentation skill: six-step workflow with per-language validation commands (doctest, tsc --noEmit, redocly lint) and re-validate loop, format-preference elicitation, eight load-when references; only lacks When-Not boundary.
FAQ
What is a developer tool skill?
A SKILL.md package that teaches your agent a specific engineering practice — systematic debugging, test-driven development, code review protocol. It fires when your work matches its trigger description.
Do these skills replace my existing workflow?
No — they augment it. Your agent follows the skill's methodology when relevant tasks come up, while your tools, editor, and CI stay exactly as they are.
How do I install a skill?
One line: curl -fsSL https://skill123.me/install/{slug}.sh | bash — or paste a single prompt into Claude Code and it installs itself. Each detail page shows all three install methods.
Every skill here was scored on the same six-dimension rubric — the full scorecard with written rationale is on each skill's page. Browse all Developer Tools skills.