MCP Server Boilerplate

git clone <your-repo> cd mcp-server-playground

curl -fsSL https://bun.sh/install | bash

Set up the MCP server for local development

helm repo add chrisleekr https://chrisleekr.github.io/helm-charts/ helm repo update helm install mcp-server-playground chrisleekr/mcp-server-playground

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Create MCP configuration file for local build

Create a.cursor/mcp.jsonfile in your project directory (for project-specific setup) or~/.cursor/mcp.jsonin your home directory (for global setup):

{ "mcpServers": { "mcp-server-playground-cursor": { "type": "http", "url": "http://localhost:3000/mcp" } } }

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Copymcp-config.example.jsontomcp-config.json

Editmcp-config.jsonto point to the correct MCP server

docker compose up -d # Then run the inspector bunx @modelcontextprotocol/inspector -y --config ./mcp-config.json --server mcp-server-playground-inspector

docker compose up -d bun run test:inspector

- Name: MCP Server Playground
- Application Type: Regular Web Application

- Click on "Settings"
- Set the following settings:

- Allowed Callback URLs:http://localhost:3000/oauth/auth0-callback
- Allowed Web Origins:http://localhost:3000

- Click on "APIs"
- Click on "Create API"

- Name: MCP Server Playground
- Identifier:urn:mcp-server-playground
- JSON Web Token (JWT) Profile: Auth0
- JSON Web Token (JWT) Signature Algorithm: RS256

How to make stateful session with multiple MCP Server instances?

When the MCP server is deployed as a cluster, it is not possible to make it stateful with multiple MCP Server instances because the transport is not shared between instances by design.

To make it truly stateful, I used Valkey to store the session id with the initial request.

When the request comes in to alternative MCP server instance, it will check if the session id is in the Valkey. If it is, it will replay the initial request and connect the transport to the server.

- Streaming is not working as expected. It returns the final result instead of streaming the data.

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