the_vampiire_mcp_sse
by the-vampiireMCP SSE Server Limitations Demo
Overview
This project demonstrates the limitations of an MCP SSE (Server-Sent Events) server when using the Bun runtime compared to Node.js. The demo provides a reproducible setup to observe the differences in behavior between the two runtimes.
Tools
- Bun Runtime: A fast JavaScript runtime.
- Node.js: A JavaScript runtime built on Chrome's V8 JavaScript engine.
- MCP Inspector: A tool to inspect and debug MCP SSE connections.
Configuration
To set up the demo, follow these steps:
-
Install Dependencies:
shell bun install -
Run the MCP Inspector:
shell npm run inspect -
Open the Inspector:
Navigate to http://localhost:5173. -
Select SSE as the Transport:
Enterhttp://localhost:3500/sseas the URL. -
Inspect Traffic:
Open the Dev Tools Network tab to monitor traffic. -
Run the Server Using Bun:
shell npm run start:bun -
Observe Behavior:
Attempt to connect to the server using the inspector. Observe the network, server, and inspector logs. -
Run the Server Using Node.js:
shell npm run start:node -
Observe Behavior:
Attempt to connect to the server using the inspector. Observe the network, server, and inspector logs.
Usage
The demo is designed to highlight the differences in SSE server behavior between Bun and Node.js. By following the steps, users can observe how the Bun runtime may fail to maintain SSE connections, whereas Node.js succeeds.
About
This project is a demo showcasing the limitations of an MCP SSE server when using the Bun runtime. It provides a clear, step-by-step guide to reproduce the observed issues.
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