Development MCP Servers

Local AI code security harness and MCP server (npx -y gadriel code mcp) for Claude Code, Cursor, GitHub Copilot, Windsurf, and Codex. Runs 6 local security engines (SAST across 12 languages, SCA/SBOM with OSV reachability, secrets, IaC/config, container, and OWASP LLM Top 10 / Agentic Skills checks) 100% on the developer's machine.

MCP server that bridges AI coding tools on macOS. mcp-bridge-go is a free, lightweight MCP server in Go that lets AI coding tools on macOS, such as Gemini CLI, Antigravity and Claude Desktop, pass tasks to each other through AppleScript automation, so you don't have to copy and paste between them. Source-available (PolyForm Shield).

Look up an API, SDK or MCP error; get the source-linked breaking change, deprecation or advisory and its fix.

Diff two texts by line, word or char: unified diff, HTML redline, patch apply, similarity.

Find Quasar Framework (Vue) UI Components and paste their source. Free Components need no key.

Free temporary email for agents and apps: create and read temp inboxes via MCP, REST API, or CLI. Custom handles, password reclaim, 6-month retention, free plan 1,000 emails received per account per month. Receives mail only, not for banking or important accounts.

ZUUZ helps sales teams manage the important signals hidden inside busy inboxes.

Lets an AI agent test a network change in a real containerlab lab before it is applied: BGP checks, pass/fail verdict with evidence.

Free MCP server that checks AI-agent code for guard patterns: idempotency keys, approval gates, API-key privilege audits. Static checks only — never executes your code.

Run PHP inside your own project from any MCP client, locally or over SSH, and get back what every statement returned as structured data, with the queries it ran and a rollback or sandbox guard for production.

Local-first Python MCP server for Claude Desktop and Cursor that scores any URL across 65 GEO and technical SEO checkpoints, verifies AI crawlers (GPTBot, ClaudeBot, PerplexityBot), and generates JSON-LD, llms.txt, and 4-page PDF reports.

AI product team: builds, edits and publishes websites from a brief, draws logos with a brand kit, checks public websites and GitHub repos for security issues. Sign in with a Pugi account (OAuth).

Curated skills & prompts for AI builders — SkillStack's MCP server gives coding agents instant access to its curated agent skills and AI prompts

Multi-model AI second opinions with a reviewed conclusion, consensus level, and preserved dissent.

eroq is a remote MCP server. Connect it once and Claude, ChatGPT or your coding agent can generate images, video clips and voice lines on your eroq account, and run your Flows — no key to paste, same credits as the studio.

An MCP server that empowers AI agents to generate structured, professional technical documentation using The Good Docs Project templates and authoring guidelines.

Memmo gives AI coding agents the memory of the team. Sessions and merged pull requests propose memories (rules, decisions, risks, past failures); a person approves them; approved memories are served to Claude Code, Codex, Cursor or any MCP client, and ground pull request reviews.

ExchangeRebel — 180 pay-per-call APIs for AI agents (market, company, weather, dev tools and more), paid per call via x402 on Solana. 184 MCP tools. You only pay for delivered answers.

All-in-one Mac networking for AI agents and humans: diagnostics, per-app and agent network usage, hotspot controls and traffic-aware keep-awake, with a menu-bar app and free open-source CLI + MCP.

LLM Benchmark ranks LLMs on public LLM benchmarks for coding, agents, reasoning and math, with API prices and cost per solved task. Updated daily.

Hosted, read-only MCP server with 68 website and domain checks: SSL/TLS certificates, DNS records, SPF/DKIM/DMARC email authentication, WHOIS, HTTP and security headers, redirects and more. Remote Streamable HTTP endpoint at https://a2z.tools/mcp, no install; free tier with an optional API key.

Check app locale files for missing keys and broken placeholders, and translate them into 46 languages. 13 formats (JSON, YAML, .po, ARB, .xcstrings, XLIFF and more).

FiveM and GTA V tools: convert, merge, optimize and build resources, and make AI props and liveries.

Read-only MCP server for EventSend: search your product events, follow one customer's timeline, and find out why a Slack, Discord or webhook notification failed.

Add, check, diagnose and remove your SaaS customers' custom domains from any MCP client.

Firecracker micro-VMs for AI agents. Own kernel per sandbox, private networking, pause-to-zero with state preserved, no egress fees. SDK, CLI, MCP, REST.

Release intelligence for AI coding tools (Claude Code, Codex CLI, Cursor, Gemini CLI, Copilot CLI and more): latest releases, what changed since a version, breaking changes, upgrade notes and release cadence. Free, read-only, no sign-in. Endpoint: https://mcp.havoptic.com/mcp

Official SMSPVA documentation MCP: search Activation V2, Rental and Private Email API guides and get code examples in English, Spanish and Chinese.

Communicate with Kubernetes clusters in a secure way, with limited permissions and expiring credentials

Tamper-evident, quantum-sealed audit logs for AI agents: log every action, prove it later, sealed compliance reports (EU AI Act, OMB AI inventories, post-quantum plans), agent trust passports, wallet Know-Your-Agent, spending mandates. Remote MCP, free tier, x402.