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Preflight: MCP server security check

Check an MCP server for auth gaps before you connect

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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.

PH · launched Sep 14, 2026 · 1 upvote (top 69%) · 0 views

Niche: ai agent security and monitoring tools · 297 launches, 14 in the last 7 days ▼ -44% · Explore this niche →

Category and tags
  • Security
  • Compliance & governance
  • Developer
  • AI feature
  • Commercial product
  • Developer Tools
  • Security

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More like this: all 297 launches in ai agent security and monitoring tools →

Could you build this?

Yes An MCP security scanner simply connects to an MCP JSON-RPC server, inspects advertised tool schemas/descriptions, and runs heuristic and LLM checks for prompt injections.

Competitors

Other products that read as similar to this one : 229 launches clear the similarity bar, closest 8 shown.

Attention rank: #186 of 230 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 301 days after the earliest competitor.

  • Glimind · ph · 2026-10-19 · 1 upvotes · similarity 0.55
  • SentinelAgent Guard · ph · 2026-09-23 · 2 upvotes · similarity 0.50
  • mcpscore · ph · 2026-10-30 · 5 upvotes · similarity 0.50
  • MCPShip · ph · 2026-09-12 · 3 upvotes · similarity 0.50
  • TrustedMCP · ph · 2026-11-10 · 3 upvotes · similarity 0.49
  • Sitejar MCP Server · ph · 2026-09-22 · 1 upvotes · similarity 0.49
  • PlugMCP · ph · 2026-11-06 · 1 upvotes · similarity 0.48
  • MCP Compass · ph · 2026-09-15 · 3 upvotes · similarity 0.47

Related data

The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.