vercel/next-devtools-mcp

MCP Developer Tools

A Model Context Protocol (MCP) connector that lets AI coding agents like Claude, Cursor, and Amp interact with a running Next.js dev server for live errors, routes, logs, docs, and browser automation.

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TypeScript Latest v0.4.0 · 1mo ago Security brief →

Features

Discovers active Next.js 16+ dev servers and proxies their built‑in MCP endpoint
Provides `nextjs_index` to list discovered servers and their runtime tools
Offers `nextjs_call` for querying errors, logs, route metadata, and Server Actions
Includes gateways (`nextjs_docs`, `browser_eval`) that point agents at version‑accurate docs and the `agent-browser` CLI

Recent releases

View all 17 releases →

Review required

v0.4.0 Breaking risk 1mo

Breaking upgrade Auth

Tools removed, docs & browser eval changes

Open

v0.3.8 Bug fix 6mo

Minor fixes and improvements.

Full changelog

What's Changed

fix: filter base64 image from screenshot result by @Burry in https://github.com/vercel/next-devtools-mcp/pull/105
fix(init): avoid agent idle caused by strict reply prohibition (fix #109) by @MapleCity1314 in https://github.com/vercel/next-devtools-mcp/pull/110

New Contributors

@Burry made their first contribution in https://github.com/vercel/next-devtools-mcp/pull/105
@MapleCity1314 made their first contribution in https://github.com/vercel/next-devtools-mcp/pull/110

Full Changelog: https://github.com/vercel/next-devtools-mcp/compare/v0.3.7...v0.3.8

View release on GitHub

v0.3.7 Security relevant 7mo

Security fixes

CVE-2025-66414 in @modelcontextprotocol/sdk 1.24.3
CVE-2025-55182 in Next.js 16.0.7

Full changelog

Fixes

fix: upgrade @modelcontextprotocol/sdk to 1.24.3 (CVE-2025-66414) by @gaojude in https://github.com/vercel/next-devtools-mcp/pull/107

Misc

fix: upgrade Next.js to 16.0.7 (CVE-2025-55182) by @ctate in https://github.com/vercel/next-devtools-mcp/pull/106
@ctate made their first contribution in https://github.com/vercel/next-devtools-mcp/pull/106

Full Changelog: https://github.com/vercel/next-devtools-mcp/compare/v0.3.6...v0.3.7

View release on GitHub

v0.3.6 Bug fix 7mo

Notable features

Improved port discovery

Full changelog

Improvements

Fix screenshot action using wrong Playwright MCP tool name by @gaojude in https://github.com/vercel/next-devtools-mcp/pull/98
Improve port discovery by @gaojude in https://github.com/vercel/next-devtools-mcp/pull/101

Misc

ci: update server.json for mcp registry when bump version by @huozhi in https://github.com/vercel/next-devtools-mcp/pull/102
Add troubleshooting section for common user issues by @gaojude in https://github.com/vercel/next-devtools-mcp/pull/97

Full Changelog: https://github.com/vercel/next-devtools-mcp/compare/v0.3.5...v0.3.6

View release on GitHub

v0.3.5 New feature 8mo

Notable features