nextjs-devtools
Next.js development tooling via MCP. Inspect routes, components, build info, and debug Next.js apps.Use when working on Next.js applications, debugging routing, or inspecting app structure.NOT for general React or non-Next.js projects.
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Installation for Agentic Skill
View all platforms →skilz install mjunaidca/mjs-agent-skills/nextjs-devtools skilz install mjunaidca/mjs-agent-skills/nextjs-devtools --agent opencode skilz install mjunaidca/mjs-agent-skills/nextjs-devtools --agent codex skilz install mjunaidca/mjs-agent-skills/nextjs-devtools --agent gemini
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Agentic Skill Details
- Repository
- mjs-agent-skills
- Type
- Technical
- Meta-Domain
- development
- Primary Domain
- javascript
- Market Score
- 17.3
Agent Skill Grade
D
Score: 67/100
Click to see breakdown
Score Breakdown
Areas to Improve
- Scripts referenced (start-server.sh, mcp-client.py) don't exist in skill directory
- File exceeds 100 lines without table of contents for navigation
- Workflows lack validation steps; no run→check→fix patterns for debugging
Recommendations
- Focus on improving Utility (currently 11/20)
- Address 3 high-severity issues first
- Add trigger phrases to description for discoverability
Graded: 1/24/2026
Developer Feedback
I was curious how you'd handle integrating devtools into the Next.js ecosystem—the timing hints at solving some real pain points in the developer experience, but the implementation seems to be missing some structural decisions that would make it production-ready.
Links:
The TL;DR
You're at 67/100, which puts you in D territory. This is graded against Anthropic's skill best practices—specifically their Progressive Disclosure Architecture (PDA) standards. Your strongest area is Spec Compliance (12/15), but Utility is dragging you down hard at 11/20. The good news? You've got a solid foundation; you're just missing the structural pieces that would make this actually useful at scale.
What's Working Well
- Spec compliance is solid — your frontmatter is valid YAML with all required fields, and the hyphen-case naming convention is correct
- Clear trigger phrases — terms like "Next.js debugging," "inspect routes," and "component tree inspection" are discoverable and specific
- Good troubleshooting table — having a dedicated section with common issues shows you're thinking about user pain points
- Concrete command examples — you provide actual bash commands users can run, which is better than abstract explanations
The Big One: Missing Scripts and Layered Structure
Here's what's holding you back the most: you reference scripts (scripts/start-server.sh, scripts/mcp-client.py) that don't exist in your skill package, and everything lives in a single 103-line SKILL.md file with no supporting documentation.
Why it matters: Users can't actually run your examples. When they try bash scripts/start-server.sh, it fails. That breaks trust immediately.
The fix: Either include the actual scripts in your skill's directory structure, or remove the references and document the manual setup steps inline. If you're going with scripts, create a scripts/ subdirectory with those files. If going manual, walk through each setup step explicitly. Additionally, create a references/ directory—pull out the MCP server setup details into references/mcp-setup.md and detailed tool documentation into references/tools-reference.md. This gives you the PDA layering you're missing (+4 points).
Other Things Worth Fixing
Add a table of contents — at 103 lines, your skill needs navigation. Add one right after the title with links to Quick Start, Available Tools, Workflow Patterns, Scripts, and Troubleshooting (+1 point)
Show example outputs — you explain what each tool does, but users don't see what success looks like. Add JSON/text samples showing what
list-routesorinspect-componentactually returns (+1 point)Build validation loops into workflows — your "Workflow Patterns" section shows commands but no verification steps. Add: "Run command → Check output contains X → If missing, verify Y → Re-run after fixes" patterns. This bridges the gap between knowing what to run and knowing if it worked (+3 points)
Consolidate repetitive bash — that full
python3 scripts/mcp-client.py call -s "npx next-devtools-mcp@latest"command appears 7+ times. Define it once as an alias or variable, then reuse it (+1 point)
Quick Wins
- Most impactful: Include actual scripts or document manual setup (verify this works end-to-end)
- Second: Restructure into PDA layers—move MCP details to
references/mcp-setup.md - Third: Add example outputs so users know what to expect
- Easy: Add a TOC, fix terminology consistency (pick "on-demand" OR "per-call"), build validation into workflows
These fixes would bump you to roughly 80/100 and move you from D to B territory.
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