next-devtools

next-devtools is an MCP server for Claude Code, Codex, Cursor, Gemini CLI, OpenCode from Asymmetric-al/core. Its token cost is not measured, scanned A, original, AGPL-3.0.

A local MCP server that provides development tools for Next.js, a framework for building web applications with React.

In plain words
What is it for?
It supports checking live errors, logs, routes, and page metadata during Next.js development.
Why use it?
It gives the assistant access to development information needed when diagnosing a running Next.js application.

MCP server for Claude CodeCodexCursorGemini CLIOpenCode

Written for no agent in particular: it speaks MCP, so any client can run it. Also seen: listed in a Claude config.

One of 4 entries in .mcp.json upstream. Installing this one merges just its entry into your config; the other 3 are separate, each on its own page.

Good fit It supports checking live errors, logs, routes, and page metadata during Next.js development.

Compare 6 mcp servers from other repositories ↓
Install with agentmods
npx agentmods add mcp/asymmetric-al/core/next-devtools
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/Asymmetric-al/core

Made for: Claude Code, Codex, Cursor, Gemini CLI, OpenCode.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for next-devtools

README.md
[![agentmods](https://agentmods.dev/badge/mcp/asymmetric-al/core/next-devtools.svg)](https://agentmods.dev/mcp/asymmetric-al/core/next-devtools)
Your own site
<a href="https://agentmods.dev/mcp/asymmetric-al/core/next-devtools"><img src="https://agentmods.dev/badge/mcp/asymmetric-al/core/next-devtools.svg" alt="Measured on agentmods" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Security

Grade A, and why

next-devtools scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.mcp.json · 9 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Same file

What else .mcp.json configures

This page is one entry in a file that holds 4. Installing the file brings all of them; each is measured and scanned on its own page.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 9 lines scan A c1e8f646cdfe

Subscribe to this mod's changes

next-devtools is an MCP server published in the GitHub repository Asymmetric-al/core (391 stars, last pushed 5d ago), licensed AGPL-3.0. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.