next-devtools-mcp
io.github.vercel/next-devtools-mcp · version 0.3.6 · 157,313 weekly npm downloads · audited 2026-11-03
Notes
Findings
No hidden-instruction or invisible-character findings in any tool, prompt, or resource description.
Claude Connectors Directory readiness
- ❌ Every tool has a title Missing on 7 of 7: browser_eval, enable_cache_components, init, nextjs_docs and 3 more
- ❌ Every tool declares readOnlyHint or destructiveHint Missing on 7 of 7: browser_eval, enable_cache_components, init, nextjs_docs and 3 more
- ✅ Tool names are 64 characters or fewer All within limit
- ❌ Descriptions avoid instructions about model behavior or other tools 5 of 7 descriptions reference other tools or tell the model what it must do: browser_eval, init, nextjs_docs, nextjs_index and 1 more
- ✅ No hidden instructions or invisible characters in tool metadata None found
Checks the directory's published tool requirements that are visible from tools/list. Passing them does not guarantee acceptance.
What this server's tools can do
- Runs shell commands or code:
browser_eval
Not a vulnerability by itself. It tells you what an injected prompt could ask this server to do, so you can decide which tools need approval.
Supply chain
- Install scripts: none
- npm provenance: no
- Source repository linked: yes
- License: MIT
- Direct dependencies: 5
Tools (7)
| Name | Title | Hint | Description |
|---|---|---|---|
browser_eval | none | Automate and test web applications using Playwright browser automation. This tool connects to playwright-mcp server and provides access to all Playwright capabilities. CRITICAL FOR PAGE VERIFICATION: When verifying page… | |
enable_cache_components | none | Migrate Next.js applications to Cache Components mode and complete setup for Next.js 16. Use this tool when you need to: - Migrate to Cache Components mode - Migrate to cache components - Enable Cache Components - Set u… | |
init | none | ⚠️ CALL THIS FIRST - Initialize Next.js DevTools MCP context and establish MANDATORY documentation requirements. **IMPORTANT: This tool MUST be called at the START of every Next.js development session.** This tool fetc… | |
nextjs_docs | none | Search and retrieve Next.js official documentation. Three actions: 1) 'get' - Fetch full docs with a path (preferred after init). 2) 'search' - Find docs by keyword (redirects to use llms.txt index if init was called). 3… | |
nextjs_index | none | Discover all running Next.js development servers and list their available MCP tools. WHEN TO USE THIS TOOL - Use proactively in these scenarios: 1. **Before implementing ANY changes to the app**: When asked to add, mod… | |
nextjs_call | none | Call a specific MCP tool on a running Next.js development server. REQUIREMENTS: - Port number of the target Next.js dev server - Tool name to execute - Optional arguments object (if the tool requires parameters) Use 'n… | |
upgrade_nextjs_16 | none | Guide through upgrading Next.js to version 16. CRITICAL: Runs the official codemod FIRST (requires clean git state) for automatic upgrades and fixes, then handles remaining issues manually. The codemod upgrades Next.js,… |
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