"How to obtain an API key" matching MCP servers:

Acts as a bridge between standard REST/OpenAPI web APIs and the Model Context Protocol, dynamically converting REST endpoints into MCP tools for LLM clients like Cursor, Claude Desktop, and n8n.

Dynamically converts any API with an OpenAPI v3 specification into MCP tools for AI assistants. It supports multiple authentication methods including OAuth2, Bearer tokens, and API keys for flexible integration.

Search, document and execute authenticated API calls across all your apps (Gmail, Slack, Stripe, Notion, GitHub, and more) through 4 universal tools whose context footprint stays constant no matter how many connections you add. Hosted remote server with OAuth at https://mcp.withone.ai/mcp, or run locally via npx @withone/mcp.

Enables agents to convert Markdown into WhatsApp-compatible formatting, including styled text, lists, and tables that fit a phone's monospace width.

Provides AI-powered educational tools for teachers including lesson planning, quiz creation, student progress analysis, learning path recommendations, and rubric generation. Enables educators to automate administrative tasks and personalize learning experiences through natural language interactions.

Real-time last-minute tour and activity booking across 18 suppliers in 15 countries via the OCTO open standard. Search available slots, create Stripe checkout sessions, and check booking status.

MCP server for LazyRelay: schedule posts, check analytics, and read mentions from any MCP-compatible AI agent. Local (stdio, API key) or hosted (OAuth, no install).

Lets AI agents pack shipping containers using the Kubova calculator, with tools for container loading and API key verification.

Minimal MCP server for sending messages to Poke via the inbound webhook.

A generic MCP server that dynamically exposes any OpenAPI-documented REST API to LLMs by auto-discovering endpoints. It provides tools for exploring API capabilities and making authenticated requests directly through natural language interfaces.

Enables reading and writing WiseGrid sheets, including listing sheets, paginating rows, adding and updating records, and running reports, all from an MCP client with API key authentication.

An MCP server that exports PDF documents to markdown format optimized for LLM processing.

Remote-control Unity Editor from any AI IDE via file-based IPC — 62 tools, zero dependencies

Converts any OpenAPI/REST API into MCP tools with dynamic server switching, variable substitution, and runtime configuration. Enables seamless interaction with multiple API environments through natural language without pre-configuration.

Create disposable email inboxes, extract OTP codes in 15 languages, and receive webhooks — all from your AI agent. One call: create inbox → wait for email → get the verification code. Supports 7 domains, email forwarding, and HMAC-signed webhooks with OTP included in payload. Free tier available.

Enables deploying pre-built AI agent blueprints for RFx procurement and employee onboarding, with no signup or API key required.

Manage Job using MCP: Manage Job, Candidates, Resumes, Salaries all within this one MCP tools It can solve problems like: You have 50 resumes to screen. Your AI assistant can reason about candidates, but it can't: Read PDFs/DOCX — The AI can't open binary files Extract structured data — Copy-pasting loses formatting, metrics, and context Compare at scale — No consistent scoring across candida

Enables Claude to interact with Jira, Salesforce, and n8n through MCP tools, allowing automated reading of Jira stories, deploying Salesforce metadata, and triggering n8n workflows.

Enables AI assistants to generate images from text prompts and transform existing images using Google Gemini's nano banana model through the Nanana AI service. Supports both text-to-image generation and image-to-image transformation capabilities.

Book a table, an appointment or a place in a class at a real local business. Live availability, instant confirmation, no account and no API key. Eight tools: search, fetch, get_business, check_availability, create_booking, check_booking, cancel_booking and request_listing. Guest emails in eight languages. Hosted at https://g-guest.app/api/mcp