MCP Observatory

4

Drop-in MCP debugging proxy that intercepts stdio, SSE, and HTTP transports to log, replay, and diff all JSON-RPC messages between AI clients and servers.

GitHub
Category MCP Servers
Added May 23, 2026
Views 82

About

MCP Observatory sits transparently between MCP clients and servers, capturing every JSON-RPC message with timestamps and latency metrics, storing them in a local SQLite database with automatic secret redaction. It provides a web UI for real-time message visualization, request replay against live servers, response diffing, and session history review. Distributed as a single Rust binary with no external dependencies.

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