Developer Tools MCP Servers
Code, Git, APIs, SDKs, CI/CD, developer workflows, and local developer tooling.

Package Registry Mcp
Published by GitHub account mrfentmen
Lets an assistant look up npm and PyPI packages to retrieve versions, descriptions, and metadata.

Osv Mcp
Published by GitHub account mrfentmen
Local MCP server that gives an assistant access to OSV open source vulnerability data for package security checks.

Openapi Scout Mcp
Published by GitHub account mrfentmen
Local, read-only MCP server that summarizes local OpenAPI or Swagger JSON files so an assistant can explain an API contract before coding.

Open Vsx Mcp
Published by GitHub account mrfentmen
Keyless MCP server that lets an assistant look up VS Code extensions on Open VSX, including versions, descriptions and download stats.

Number Tools Mcp
Published by GitHub account mrfentmen
A local MCP server that converts numbers between bases, builds Roman numerals, and spells numbers out in words.

Nuget Mcp
Published by GitHub account mrfentmen
A local MCP server that lets an assistant search .NET packages on NuGet, with no API key required.

Npms Mcp
Published by GitHub account mrfentmen
Keyless MCP server that lets an assistant look up npm package quality, popularity and maintenance scores from npms.io, plus package search.

Npm Search Mcp
Published by GitHub account mrfentmen
A local MCP server that lets an assistant search npm packages and inspect their metadata from the public npm registry, with no API key needed.

Nix Packages Mcp
Published by GitHub account mrfentmen
Local MCP server that lets an assistant search Nix packages in nixpkgs, with no API key required.

Name Generator Mcp
Published by GitHub account mrfentmen
Lets an assistant generate random names, usernames, and project codenames locally, with no network access or API key.

Migration Map Mcp
Published by GitHub account mrfentmen
A local MCP server that inspects database migration filenames and reports numbering gaps, duplicates and rollback pairing signals.

Merge Conflict Forecaster Mcp
Published by GitHub account mrfentmen
A local stdio MCP server that predicts merge-conflict pressure in a local Git repository, per its one-line registry description.

Mdn Search Mcp
Published by GitHub account mrfentmen
A local MCP server that lets an assistant search MDN web docs for HTML, CSS and JavaScript reference material, with no API key required.

Maven Info Mcp
Published by GitHub account mrfentmen
A local MCP server that lets an assistant search Java libraries and artifacts on Maven Central, with no API key required.

Math Tools Mcp
Published by GitHub account mrfentmen
A local MCP server that gives an assistant math tools: prime checks, factorization, GCD, and basic statistics, all computed on your machine.

Markdown Mcp
Published by GitHub account mrfentmen
Local MCP server that converts markdown to HTML and extracts headings, with no network access or API key required.

Mac Lookup Mcp
Published by GitHub account mrfentmen
Lets an assistant look up the hardware vendor behind a MAC address using the MAC Vendors database.

Lorem Mcp
Published by GitHub account mrfentmen
A local MCP server that lets an assistant generate lorem ipsum and filler text offline, with no network access or API key.

Lockstep Mcp
Published by GitHub account mrfentmen
A local MCP server for analyzing lockfiles and package-manager reproducibility, without exposing dependency details.

Leetcode Mcp
Published by GitHub account mrfentmen
A local MCP server that gives an assistant access to a LeetCode problem database, letting it list problems by difficulty and search by title.

Languagetool Mcp
Published by GitHub account mrfentmen
Keyless local MCP server that lets an assistant run LanguageTool grammar, spelling and style checks in 30+ languages.

Jwt Tools Mcp
Published by GitHub account mrfentmen
Lets an assistant decode and verify JSON Web Tokens locally, without network access or signing keys.

Jsonplaceholder Mcp
Published by GitHub account mrfentmen
A local MCP server that supplies placeholder JSON test data to an assistant, with no API key required.

Json Tools Mcp
Published by GitHub account mrfentmen
A local MCP server that lets an assistant validate, format and inspect JSON, running entirely on the user's machine with no network or key.