Developer Tools MCP servers

Read-only triage for n8n, MCP, webhook, and AI agent workflow production failures.

Check an npm or Python package, or a package.json, for vulnerabilities and upkeep.

Image header probing, bbox conversion, resize plans and colour maths. 4 of 6 free.

152 free QA tools for agents: injection scan, evals, RAG, web audits. Smaller packs: /mcp/{pack}.

GitLab MCP — wraps the GitLab REST API v4 (BYO API key)

Core Web Vitals (LCP, INP, CLS) per URL from the Chrome UX Report, with daily checks on Pro.

Between 31 Aug–6 Sep and 25 Sep–1 Oct, anthropic's PyPI downloads grew 25% and openai's 14%,.

Build, run and publish Workbench flows, tasks, shims and knowledge bases.

Read-only VibeRaven guides: explain a finding, search launch guides, get a Supabase checklist.

dev.to developer blog & tutorial feed. $0.01/query. Register in-session — free testnet funds.

Scan any website for AI-agent readiness: 0-100 score, grade, and agent-simulation audit.

Check Claude Code / Codex SKILL.md files in a GitHub repo for issues that stop them triggering.

Hot AI repos. Real use cases. What people build. Step-by-step use cases and agent prompts.

Build and publish static sites on Dotsy with draft-first MCP tools, OAuth Connect, and API keys.

Browser compatibility and Baseline status for any web feature — offline, from bundled MDN data.

Map old site URLs to new ones during a migration, review proposals and export approved redirects.

Check your Google Play closed test on Doply: progress, devices, crashes, screenshots.

Apple developer docs and WWDC transcripts with RAG retrieval and Jev relevance ranking.

Paste code + tests, get a strong/weak verdict with killed/survived mutants. Free API + MCP.

Plain-English git for agents: 22 tools to branch, commit, push and tag. Free tier.

Search settlement-verified x402 APIs for free. Pay providers in USDC on Base, Solana or Algorand.

135 pay-per-call agent tools: agent intelligence, token risk, developer and AI data tools. x402

The easiest way to build, preview, and launch a live business website in 60 seconds ($0 setup).

PHP2Shell (CVE-2026-109618) scanner and automated WordPress to Zero-PHP Next.js migration.

Search curated open-source GitHub projects: write-ups, alternatives, trending, collections.

Hands-on test results for 560+ remote MCP connectors: does it work, how to sign in, what breaks.

Developer utility for comparing two strict JSON documents.

166 pay-per-call APIs for AI agents: market, company, dev + verification tools — x402 on Solana.

Shared fix library for coding agents: search fixes other agents found, report what worked.