| FMRS | 63 / 100 · C | 80 / 100 · B | 79 / 100 · B |
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| Reliability | 10 / 20 | 14 / 20 | 12 / 20 |
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| Security and permissions | 12 / 20 | 16 / 20 | 16 / 20 |
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| Maintenance | 12 / 20 | 17 / 20 | 18 / 20 |
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| Documentation | 14 / 20 | 15 / 20 | 18 / 20 |
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| Setup experience | 15 / 20 | 18 / 20 | 15 / 20 |
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| Best for | - Front-end developers on Next.js 16+ who want coding agents to read live dev server state directly
- Teams using MCP-capable agent workflows such as Claude Code, Cursor, or Codex
- Next.js projects that need version-accurate docs instead of fetching docs over the network
| - Developers using fast-moving frameworks/libraries worried about the AI suggesting stale code
- Scenarios wanting zero-config documentation lookup
| - Developers auditing NPM dependencies within AI workflows
- Teams performing supply chain security assessments
- Users of Claude Desktop, Cursor, or VS Code
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| Not for | - Projects not using Next.js or below version 16 (nextjs_index / nextjs_call need a running Next.js 16+ dev server)
- Users expecting the server to fetch docs itself or drive the browser directly (nextjs_docs and browser_eval are gateways only)
- Deployments needing non-stdio transports such as remote HTTP
| - Looking up internal/private codebase documentation (Context7 targets publicly published open-source libraries)
- Cases needing very high coverage of obscure, niche libraries (coverage depends on what Context7's platform has indexed)
| - Projects outside the NPM ecosystem (e.g., pure Python/Go)
- Environments without network access to deps.dev, OSV.dev, and the npm registry
- Scenarios requiring maintenance by an official upstream vendor
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| Required permissions | - Read the project's next/package.json locally to resolve the installed Next.js version and docs path
- Network access to local dev server ports (e.g. localhost:3000) to discover and call the /_next/mcp endpoint
- Write local files under ~/.next-devtools-mcp/ (telemetry-id, telemetry-salt, and debug log mcp.log)
- browser_eval may prompt installation of a global CLI: npm install -g agent-browser
| - Usable without an API key (subject to a free-tier rate limit); CONTEXT7_API_KEY is an optional credential for higher quota
- Read-only documentation lookup — no code execution or local filesystem access involved
| - Network access to the NPM registry and external services (deps.dev, OSV.dev, OpenSSF, npms.io, GitHub)
- Read access to workspace lockfiles (pnpm-lock.yaml, package-lock., yarn.lock) for cache invalidation
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| Risks and side effects | - Anonymous usage telemetry is collected by default (tool usage, anonymous error messages, session ID, timestamps, and basic environment such as OS and Node.js version); your code, file contents or paths, personal data, credentials, and tool arguments are not collected. Opt out with export NEXT_TELEMETRY_DISABLED=1, and delete local telemetry data with rm -rf ~/.next-devtools-mcp.
- Upstream requests for runtime tool calls, including response-body reads, have a 60-second deadline.
- nextjs_docs falls back to https://nextjs.org/docs when an installed release has no bundled docs and asks the agent to verify APIs against the installed version.
- Using next-devtools-mcp@latest keeps clients on the latest version, which may introduce unexpected changes.
| - The free tier has limited quota — high-frequency use may hit rate limits
- Documentation content comes from Context7's platform index, so its accuracy and freshness depend on that platform's crawl cadence
| - Third-party READMEs and changelogs are untrusted external content; they are wrapped in tags with _meta flags but should still be handled cautiously
- Depends on availability and accuracy of external services
- Batch requests are capped at 25 packages to prevent registry enumeration; larger sets require batching
- Third-party open source project, not officially maintained by NPM or Anthropic
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| Supported clients | Claude Code, Cursor, Codex, Amp, Gemini, Google Antigravity, VS Code / Copilot, Warp | Claude Code, VS Code, Cursor, Cline, Amp | Claude Desktop, VS Code, Cursor, Smithery.ai |
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| Tools | 4 | 2 | 19 |
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