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A curated registry of Model Context Protocol servers, each with an automated security grade from our tool-surface scanner.
Context for the grades below — how inspection, tool poisoning, and the grade-vs-gate split work. Directory letters are Andrax scanner grades (mcpgrade-1.4.0), not Guard runtime scores.
Soft CTA: a grade finds risk on a snapshot; Guard enforces runtime controls on live MCP traffic (Free / Pro $49 / Team $399). Do not equate Andrax grades with Guard scores.
Run an MCP server? Paste its remote endpoint — we'll scan it (read-only) and publish a free, reproducible security grade. Genuine MCP servers get listed instantly.
Manage the full AdButler ad platform including advertisers, campaigns, zones, creatives, reporting, and programmatic ads via 600+ tools through the official hosted MCP server.
PayPerByte — per-byte data for AI agents: x402 USDC on Base, EIP-712-attested. No token.
Access GBIF species taxonomy, occurrence records, biodiversity datasets, and publisher data via a hosted remote endpoint.
Search Comic Vine's database of characters, issues, volumes, creators, and publishers.
Search and retrieve datasets from the Spanish government open-data catalogue datos.gob.es.