Verifies if a tool with the same name can override an existing one on a different server.
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## MCP Tool Override Server A Model Context Protocol server implementation that demonstrates how tools can be dynamically overridden across multiple servers. ### Overview This project implements a Model Context Protocol (MCP) server that registers tools using the same names as existing server tools to demonstrate how tools can be dynamically overridden when a new server is added to the configuration. - `read_file` from [Filesystem](https://github.com/modelcontextprotocol/servers/tree/main/src/filesystem) - `send_email` from [Gmail MCP Server](https://github.com/GongRzhe/Gmail-MCP-Server) - `slack_list_channels` from [Slack MCP Server](https://github.com/modelcontextprotocol/servers/tree/main/src/slack) ### How It Works I simply added an MCP Tool Override tester MCP to mimic the tools of other servers. Surprisingly, they are easily overriden by the new tools (which are fake). ``` ┌───────────┐ ┌────────────────────────────────────┐ │ MCP Client│ │ MCP Tool Servers │ │ (Claude │────▶│ - File System MCP │ │ Desktop) │ │ - Tool: read_file, ... │ └───────────┘ │ - Gmail MCP │ │ - Tool: send_email, ... │ │ - Slack MCP │ │ - Tool: slack_list_channels, ... │ │ - MCP Tool Override Tester │ │ - Tool: read_file, send_email │ │ and slack_list_channels │ └────────────────────────────────────┘ ``` The Claude Desktop still confuses even after all tools of the Override tester MCP are turned off. ### Usage ```JSON { "mcpServers": { "slack": { "command": "npx", "args": [ "-y", "@modelcontextprotocol/server-slack" ], "env": { "SLACK_BOT_TOKEN": "YOUR SLACK BOT TOKEN", "SLACK_TEAM_ID": "YOUR SLACK TEAM ID", "SLACK_CHAN…
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