API Integration
| Server | Language | Stars | Downloads |
|---|---|---|---|
| Unit Converter API Unit conversion — length, weight, temperature, volume, speed, data. x402 micropayment. | — | 0 | - |
| Unit & Currency Converter 60+ units, live FX, timezones, and date arithmetic for AI agents. | — | - | - |
| United Kingdom Payments (Stripe — Stripe checkout) United Kingdom payments for AI agents — Stripe checkout via Stripe. Never holds funds. | — | - | - |
| United States Payments (Stripe — Stripe checkout) United States payments for AI agents — Stripe checkout via Stripe. Never holds funds. | — | - | - |
| United States Weather Provide real-time and forecast weather information for locations in the United States using natural language queries. Access current conditions, multi-day and hourly forecasts, weather alerts, and nearby weather stations without requiring an API key. Enable users to get official, government-sourced weather data easily through intuitive tools. | — | - | - |
| Unitrends Backup MCP server for Unitrends Backup — appliances, jobs, recovery points, restores, alerts. | — | - | - |
| Unity AI Bridge Remote-control Unity Editor from any AI IDE via file-based IPC. 62 tools, zero dependencies. | — | 13 | - |
| Unity API Documentation Accurate Unity API docs (2022/2023/6) for AI agents. Prevents hallucinated signatures. | Python | 61 | - |
| Universal Blockchain MCP Universal blockchain MCP - swaps bridges staking lending Ethereum Arbitrum | — | - | - |
| Universal Brute Workpack Stdio-first Agent MCP workpack for local tools, audit chains, search, memory, and pipelines. | TypeScript | - | - |
| universal-openapi-mcp | TypeScript | 2 | - |
| Universal Screenshot MCP MCP server for web page and cross-platform system screenshots (macOS, Linux, Windows) | TypeScript | - | - |
| universities Universities MCP — Hipolabs Universities API (free, no auth) | — | - | - |
| Unla 🧩 MCP Gateway - A lightweight gateway service that instantly transforms existing MCP Servers and APIs into MCP servers with zero code changes. Features Docker deployment and management UI, requiring no infrastructure modifications. | TypeScript | 2.2k | - |
| unlimited-mcp Delegate coding and sysops tasks to cheaper agents or local LLMs via durable background job queues. | Python | - | - |
| Unlock SaaS Playbook engine: non-dev founders land first paying customer in 60 days or refund | — | - | - |
| Unmarkdown The document publishing layer for AI tools. Convert markdown to 6 destinations, 62 templates. | TypeScript | - | - |
| Unofficial Apple Music for macOS Ask for a playlist. Get a real one, playing in Apple Music — no account, nothing stored. | Python | - | - |
| unofficial-streamio-mcp-server Unofficial MCP server for Stream.io Chat, Video, Users, Moderation and App APIs | TypeScript | - | - |
| Unpaywall Unpaywall MCP — open-access lookup for scholarly papers (free, no key) | — | 8 | - |
| unpaywall-mcp-server MCP server for the Unpaywall API — open-access availability for 120M+ scholarly articles | Python | - | - |
| Unphurl URL intelligence for AI agents and developers. 16 tools, 25 signal weights, 20 free checks. | TypeScript | - | - |
| unraid Query, monitor, and manage Unraid servers via GraphQL API through MCP tools. Supports system info, Docker, VMs, array/parity, notifications, plugins, rclone, and live telemetry. | Python | 131 | - |
| unraid-mcp Query, monitor, and manage Unraid servers via GraphQL API through MCP tools. Supports system info, Docker, VMs, array/parity, notifications, plugins, rclone, and live telemetry. | Python | 99 | - |
| unreal-api-mcp Instant, accurate Unreal Engine API lookups instead of expensive source file reads, saving your agent tokens, context, and hallucinations. | Python | 90 | - |