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Only 1 of 4,356 reachable MCP servers is ready for the 2026-07-28 spec

by roee_tsur·Jul 12, 2026·12 points·1 comment

AI Analysis

●●●BangerBig BrainDark Horse

Scanned 4,356 servers and found only one ready for the new stateless MCP spec.

Strengths
  • Provides concrete data on protocol adoption across the entire public MCP registry.
  • Checks critical stateless requirements like routing headers without needing code access.
  • Clear grading system distinguishes between ready, not ready, and inconclusive servers.
Weaknesses
  • Utility window is narrow until the spec officially releases and migration pressure builds.
  • Black-box probing may miss servers behind auth or with non-standard endpoint paths.
Category
Target Audience

MCP server maintainers and AI infrastructure developers

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SSL Labs · Security Headers · Mozilla Observatory

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