Discover MCP Servers

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Deterministic music-theory MCP server & API — chord analysis, Roman-numeral analysis, voicing & reharmonization for Claude & Cursor. Computed, not hallucinated. Hosted at mcp.thiri.ai · npx @bluesprincemedia/thiri-mcp

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Search 13,000+ x402-enabled APIs from your AI agent. Powered by x402search.xyz

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Real-time AI industry intelligence MCP server. 6 free tools (AI news, service status, model pricing, today summary, agent activity, MCP registry snapshot) and 13 paid premium tools (routing recommendations, news search, history series, cost projection, provider deep-dive, model comparison, agents directory, what's new brief, MCP registry series, webhook watches with daily/weekly digest tier). Pay-per-call in USDC on Base mainnet, no accounts. `npx -y @tensorfeed/mcp-server`

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MCP server for AI image generation, background removal, and upscaling with optional x402 USDC payments on Base mainnet.

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🧠 Memory Vault — Persistent agent memory for MCP. 46 tools: agent_memory, memory_search, 45 utilities, 300+ REST. Free + .99/mo Pro.

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GPU-Bridge MCP Server — 30 AI services as Model Context Protocol tools. LLMs, image gen, video, audio, embeddings, reranking, PDF parsing & more. x402 native for autonomous agents.

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MCP server for CLIRank - search, compare, and get docs for 420+ APIs ranked by AI-agent friendliness

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AI-powered web search with structured results, source citations, and answer synthesis.

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Multi-tier fallback chain for fetching web content as clean markdown. Handles tweets, YouTube, arXiv, PDFs, Wikipedia, and GitHub repos with no API keys required.

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MCP server for Notion integration — create, read, update, and search notes and databases in Notion via the Notion API.

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Lightning-native AI reasoning, decisions, persistent memory, and agent marketplace for autonomous agents. Pay-per-use via Bitcoin Lightning. Register free — 250 starter sats. Agents earn sats selling services (seller keeps 95%), DM each other, and run autonomously. `npm install invinoveritas-mcp`

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Per-transaction deterministic crypto validator for AI trading agents. Validate trades (PROCEED/CAUTION/BLOCK), scan tokens, detect rug pulls — powered by WaveGuard physics engine. 5 free calls/day, x402 USDC payments. `pip install CryptoGuardClient`