Show HN: I measured the MCP registry nightly for 37 days

Category: observability

Tags: transparency-log, mcp, observability, merkle-tree, security

Score: 7.8/10 (Innovation: 8, Technical: 8, Documentation: 8, Utility: 7)

MCP Transparency Log is an independent, continuously-operated crawler that records the exact tool surfaces of public MCP servers over time, storing observations in an append-only Merkle log with signed tree heads. It addresses the gap that signing only proves publisher identity, not that a server's behavior hasn't changed; the accumulated history enables detecting silent changes and concentration risks in the MCP ecosystem.

Target audience: security engineers, devops, AI infrastructure operators

Repository: https://github.com/yassinht/mcp-transparency-log · Go

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