Discover MCP Servers

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Universal MCP server for CalDAV protocol integration. Works with any CalDAV-compatible calendar server including Yandex Calendar, Google Calendar (via CalDAV), Nextcloud, ownCloud, Apple iCloud, and others. Supports creating events with recurrence, categories, priority, attendees, reminders, searching events, and retrieving events by UID.

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Connect Claude Code with E2B cloud sandboxes — 29 tools for creating isolated Linux VMs, cloning repos, running commands, managing files, and performing git operations without touching the local machine.

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Azure cloud cost management — spending analysis, forecasts, anomaly detection, budgets, optimization recommendations, idle resource detection, tag-based cost allocation, and cross-subscription queries through natural language.

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Unified deployment dashboard MCP server across Vercel, Render, Railway, and Fly.io. 9 tools for deploy status, logs, environment variables, rollback, and health checks across all platforms. Free tier with x402 micropayments.

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Token-budgeted web fetch for AI agents. Auto-routes between Trafilatura, Jina Reader, FireCrawl, and pypdf based on URL pattern. `estimate_tokens` before `fetch_url`, 6h Redis cache, server-side `max_tokens` truncation. Open source MCP server (MIT) plus hosted REST API at [agentfetch.dev](https://www.agentfetch.dev) — 500 free fetches/mo, no card.

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Web scraping MCP server for AI agents. 6 tools: clean content extraction, structured scraping with CSS selectors, full-page screenshots via Playwright, link extraction, metadata extraction (OG/Twitter cards), and Google search. Free tier with x402 micropayments.

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MCP server for AI Diagram Maker — generate flowcharts, sequence diagrams, ERDs, system/network architecture, UML, mindmap, and workflow from natural language, code, ASCII, images, or Mermaid. Inline rendering using MCP Apps UI and editable diagram URLs. Requires API key.

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IO Aerospace MCP Server: a .NET-based MCP server for aerospace & astrodynamics — ephemeris, orbital conversions, DSS tools, time conversions, and unit/math utilities. Supports STDIO and SSE transports; Docker and native .NET deployment documented.

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1,500+ developer infrastructure deals, free tiers, and startup programs across 54 categories. Search deals, compare vendors, plan stacks, and track pricing changes. REST API and web browser at [agentdeals.dev](https://agentdeals.dev).

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Agent-to-agent referral network where AI agents discover, recommend, and refer users to each other. Features bilateral trust model, credit economy, and 7 MCP tools for agent registration, discovery, and referral tracking.

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Unified data API for AI agents — 300+ free, public, and government data sources behind a single API key. Access economic (FRED, BLS), environmental (EPA, NOAA), health (CDC, FDA), weather (NWS), financial (SEC, CFPB), science (NASA, arXiv), and 30+ more categories. Install: `npx @katzilla/mcp`.

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API intelligence for AI coding agents. 387 APIs scored on agent-friendliness with tools to recommend, compare, check scores, and discover APIs. Install: `npx clirank-mcp-server`. Web: [clirank.dev](https://clirank.dev).