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A curated registry of Model Context Protocol servers, each with an automated security grade from our tool-surface scanner.
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.
MCP server for querying global air quality measurements and pollution data from thousands of monitoring stations via the OpenAQ API.
Global air quality data via the OpenAQ v2 API — station measurements, pollutant levels, and location queries.