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Thanks so much to /u/thelastlokean for raving about this.
I've been spending days writing my own custom scripts with grep, ast-grep, and writing tracing through instrumentation hooks and open telemetry to get Claude to understand the structure of the various api calls and function calls.... Wow. Then Serena MCP (+ Claude Code) seems to be built exactly to solve that.
Within a few moments of reading some of the docs and trying it out I can immediately see this is a game changer.
Don't take my word, try it out. Especially if your project is starting to become more complex.
https://github.com/oraios/serena
Edit: Ive seena few people here and there still struggling to set things up it takes days sometimes you aren't alone luckily a fellow vibe coder has made a site for you to try out https://skeet.build it makes it easy he says so try it out and give him some feedback! (His account is in the comments)
Hey just reaching out because I've already scrapped all the web trying to set this up hope reddit can help
The new Cursor update finally added MCP Servers. I literally only care about "Sequential Thinking" spent 2 hours last night with Cline trying to get it working and we tried so many different ways
Cursor doesn't accept any SSE server I set up or a command just says failed to connect to server.
Cursors document on this is not in the slightest informative or helpful it's like they launched a broken feature.
Anyone know how to set up MCP on cursor? Even AI cant figure it out so your insight would be helpful.
Edit: Two people said this isn't working I will update it with more information soon in the meantime Show Claude Sonnet this file and Use the vscode extension RooCline to set it up he will get it working off this context.
Solution:
Setting up Sequential Thinking MCP Server for Cursor
This guide explains how to set up the Sequential Thinking MCP server using Supergateway to expose it over SSE (Server-Sent Events) for use with Cursor.
Prerequisites
Node.js installed on your system
npm (Node Package Manager)
A code editor (like VSCode)
Setup Steps
Create a new directory for your MCP server:
mkdir cursor-mcp-server cd cursor-mcp-server
2. Create a package.json file with the following content:
{
"name": "sequential-thinking-sse",
"version": "1.0.0",
"dependencies": {
"@modelcontextprotocol/sdk": "latest",
"@modelcontextprotocol/server-sequential-thinking": "latest"
}
}
3. Install the dependencies:
npm install
4. Run the Sequential Thinking server using Supergateway:
npx -y supergateway --port 8001 --stdio "npx @modelcontextprotocol/server-sequential-thinking"
Server Details
SSE Endpoint: http://localhost:8001/sse
Message Endpoint: http://localhost:8001/message
Server Name: sequential-thinking-server
Server Version: 0.2.0
Available Tools
The Sequential Thinking server provides a tool called "sequentialthinking" that enables:
Breaking down complex problems into manageable steps
Chain of thought reasoning
Hypothesis generation and verification
Maintaining context across multiple thought steps
Usage Example
The server accepts requests with the following parameters:
thought: The current thinking step (string)
thoughtNumber: Current thought number (integer)
totalThoughts: Total thoughts needed (integer)
nextThoughtNeeded: Whether another thought step is needed (boolean)
Troubleshooting
If you get a port in use error:
- Try using a different port number (e.g., 8002, 8003)
- Or kill the process using the current port
2. If you see connection issues:
- Ensure no other MCP servers are running on the same port
- Check that the server is properly initialized before sending requests
Important Notes
The server uses SSE (Server-Sent Events) for real-time communication
Each thought is processed sequentially and maintains context
The server automatically handles JSON-RPC messaging
Responses include formatted thought output with progress tracking
Maintenance
To update the server and dependencies:
npm update @modelcontextprotocol/sdk @modelcontextprotocol/server-sequential-thinking
Server Output Format
The server outputs thoughts in a formatted box:
┌─────────────────────────────────┐ │ 💭 Thought 1/5 │ ├─────────────────────────────────┤ │ [Thought content here] │ └─────────────────────────────────┘