MCP Transparency Log

An independent, continuously-operated record of what public MCP servers actually served.

Every night a crawler visits every server in the official MCP registry that declares a network endpoint, and records the exact tool surface it served. Observations go into an append-only Merkle log with a signed tree head published daily, so these figures can be recomputed rather than taken on trust.

This page is a derived view. The record is the log — verify it yourself:

go install github.com/yassinht/mcp-transparency-log/cmd/mcpobs@latest
mcpobs verify

Latest census

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Endpoints observed, by day

Amber marks a census that did not reach every endpoint. Its meta.json records it as incomplete.

Daily outcomes

dateendpointsenumerable authnot MCPunreachable tools

Servers

Type at least three characters to search by name or host. The index is loaded on first search.