{"slug": "i-built-3-mcp-servers-for-ai-agents-here-s-how-they-work", "title": "I Built 3 MCP Servers for AI Agents — Here's How They Work", "summary": "A developer built and published three production-ready MCP servers to PyPI and GitHub: crewai-web-search-mcp, code-review-automation, and document-intelligence-server. The servers enable AI agents to perform web searches, automated code reviews, and document processing through a unified interface. A shared credit system offers free and paid tiers, with the billing backend open-sourced on GitHub.", "body_md": "The Model Context Protocol (MCP) is an open standard that lets AI agents use external tools through a unified interface. Think of it as USB-C for AI — one protocol connects any AI client (Claude Desktop, Cursor, VS Code with Cline) to any tool or data source.\n\nI built three production-ready MCP servers and published them to PyPI and GitHub. Here's what they do and how to use them.\n\n`uvx crewai-web-search-mcp`\n\nTwo tools:\n\nUse cases: Ask your AI about current events, research competitors, pull documentation, verify facts in real time.\n\n```\n{\n  \"mcpServers\": {\n    \"web-search\": {\n      \"command\": \"uvx\",\n      \"args\": [\"crewai-web-search-mcp\"]\n    }\n  }\n}\n```\n\n`uvx code-review-automation`\n\nThree tools:\n\nUse cases: Paste a PR diff and get an instant review. Catch issues before they reach production.\n\n`uvx document-intelligence-server`\n\nThree tools:\n\nUse cases: Process uploaded PDFs, extract data from scanned forms, summarize long reports.\n\nAll three servers use a shared credit system:\n\n| Tier | Price | Credits |\n|---|---|---|\n| Free | $0 | 50 calls/day |\n| Starter | $20 | 2,000 calls |\n| Pro | $100 | 12,000 calls |\n\nBuy credits once, use them across any server. Credits never expire.\n\n**How it works:**\n\n`uvx crewai-web-search-mcp`\n\n`MCP_LICENSE_KEY`\n\n→ all limits removedThe billing backend is open source too: [github.com/KennyWayn3/mcp-billing-api](https://github.com/KennyWayn3/mcp-billing-api)\n\n`pip install crewai-web-search-mcp`\n\nWhat MCP servers would you like to see built next? I'm curious what the community actually needs.", "url": "https://wpnews.pro/news/i-built-3-mcp-servers-for-ai-agents-here-s-how-they-work", "canonical_source": "https://dev.to/kenneth_doster_5d86c3cf4f/i-built-3-mcp-servers-for-ai-agents-heres-how-they-work-5dbj", "published_at": "2026-06-28 06:16:10+00:00", "updated_at": "2026-06-28 06:33:26.822684+00:00", "lang": "en", "topics": ["ai-agents", "developer-tools", "artificial-intelligence", "ai-tools", "ai-infrastructure"], "entities": ["PyPI", "GitHub", "Claude Desktop", "Cursor", "VS Code", "Cline", "KennyWayn3", "MCP"], "alternates": {"html": "https://wpnews.pro/news/i-built-3-mcp-servers-for-ai-agents-here-s-how-they-work", "markdown": "https://wpnews.pro/news/i-built-3-mcp-servers-for-ai-agents-here-s-how-they-work.md", "text": "https://wpnews.pro/news/i-built-3-mcp-servers-for-ai-agents-here-s-how-they-work.txt", "jsonld": "https://wpnews.pro/news/i-built-3-mcp-servers-for-ai-agents-here-s-how-they-work.jsonld"}}