Best API AI Skills & MCP Servers

MCP server that turns any OpenAPI 3.x spec into callable tools for Claude — zero config, instant API access

Local MCP server for PDF manipulation — merge, split, rotate, extract, watermark, metadata. Zero API keys, fully offline. Works with Claude, Cursor, ChatGPT.

Adaptive memory system for AI applications. Multi-strategy retrieval, cognitive scoring, knowledge graph, and self-improving ML. Connects via MCP or REST API.

MCP server for Megaplan project management — 8 tools for tasks, deals, projects, employees, comments + 2 MCP prompts.

MCP server for LLM/VLM model selection — compare 336+ models with real-time benchmarks, pricing, and personalized recommendations. No API key required.

The Swiss Army knife of MCP servers — 16 tools in a single connection. Weather, stocks, news, search, translation, and more. No API keys needed.

FDIC MCP — FDIC BankFind Suite API (free, no auth)

Model Context Protocol (MCP) server for Neural Trader with 87+ trading tools

MCP server with 7 tools for searching, citing, and exploring ASTGL content about MCP servers, local AI, and AI automation — includes tutorials, comparisons, freshness tracking, and rate-limited API access

MCP server: управление планами и ценами Billing API (catalog)

MCP server for Microsoft 365 / Office 365 SharePoint — full read-write access to sites, documents, pages, metadata, navigation, and permissions

MCP server that proxies to xAI Grok API for searching X (formerly Twitter)

MCP server for Microsoft Fabric REST APIs — enables data engineers and data analysts to use AI assistants beyond Copilot to build and manage Fabric components

MCP server for Redmine API integration with AI agents

MCP Server para la API collection-api-refacil

MCP server for DataLikers — Instagram & TikTok data API for AI assistants

🦅 Free web search MCP server - soar through the web without API keys. Just add 'use freebird' to any prompt.

Sendly MCP Server — Full SMS platform for AI agents. Messaging, contacts, campaigns, templates, webhooks, OTP verification, and more.

Official Wawp WhatsApp API MCP Server. Connect your AI (Cursor, Claude, Windsurf) directly to WhatsApp for automation and messaging.

MCP server for Kontur.Focus — company search, financials, counterparty check (Russia)

CLI & MCP server for KRX (Korea Exchange) Open API — query Korean stock market data (KOSPI, KOSDAQ, ETF, bonds, derivatives) from terminal or AI agents

2-tool OpenAPI-driven MCP server for GitLab

MCP server for Maytapi WhatsApp Unofficial API

MCP server for CloudPayments API — charge, auth, confirm, void, refund, find transaction. 6 tools. Basic auth.