MCP Servers
73,490 MCP servers for AI apps. Filter by category, badge and popularity.
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Post-quantum cryptography (PQC) security scanner for blockchain and AI agents. Detects quantum-vulnerable algorithms (ECDSA, RSA, DH) and provides NIST FIPS 203/204/205 migration paths. Free, open-source, privacy-first. Scan any GitHub repository or smart contract via MCP tools
Daily, Ed25519-signed security intelligence for AI-agent stacks: CVEs, supply-chain incidents and advisories (GHSA/CISA-KEV/OSV/NVD + national-CERT) assessed for MCP/LLM-proxy impact, cross-validated and signed. Paid via x402 ($0.10 USDC on Base); free sample, list_available, che
Energy transition intelligence for AI agents — this MCP server gives any LLM client access to 7 live data sources and 4 scoring models covering energy transition readiness, grid stress prediction, stranded asset risk, and EV infrastructure gap analysis.
Free energy intelligence for AI agents — no API key required: check_incentives (honest post-2026 US incentive guidance by ZIP, DSIRE-grounded), estimate_production (honest-range solar kWh from system size or monthly bill), get_node_score (instant 0-100 home Energy Node Score across)
New to MCP?
From what the protocol is to installing your first server, these answers cover most first questions.
An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.
