Preflight: MCP server security check
Check an MCP server for auth gaps before you connect
What is Preflight: MCP server security check?
Preflight checks an MCP server for real security gaps before your agent connects: unauthenticated transport, capability grants with no scoping, known-bad description signatures, and a semantic pass reading tool descriptions for injected instructions aimed at the model. Free tier is real: 20 scans/minute, no signup. Tested against real production servers (Linear, Sentry, Atlassian) so it doesn't cry wolf on things already secured properly. Built by All the Possibles.
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