Mcpsnoop is a new transparent proxy designed to debug MCP traffic between AI clients and servers in real-time. It allows developers to visualize JSON-RPC communications without prior setup, enhancing the troubleshooting process for tool interactions.
Mcpsnoop offers a streamlined way for developers to debug the traffic between AI clients and MCP servers. By integrating as a transparent proxy directly in the data path, it captures real-time JSON-RPC communications. This approach eliminates the limitations of traditional debugging tools, which often miss information about calls not made or unexpected arguments.
The tool provides a live terminal user interface that showcases requests, responses, and notifications, color-coded for clarity. It includes features such as a capability inspector to examine what agreements were made during the handshake and a hung-call detection mechanism to identify requests stuck in a pending state.
To initialize Mcpsnoop, users can wrap their server command with it in their client's MCP configuration. For instance, the command structure allows any previously used commands to be executed with mcpsnoop included, facilitating a quick setup.
Mcpsnoop supports the ability to replay captured tool calls against a fresh server instance. This feature significantly accelerates the development cycle by allowing for rapid testing and iteration on tool interactions.
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Mcpsnoop is a new transparent proxy designed to debug MCP traffic between AI clients and servers in real-time. It allows developers to visualize JSON-RPC communications without prior setup, enhancing the troubleshooting process for tool interactions.