Best for
- Development teams using TypeScript
- Building production-grade MCP servers quickly
- Needing streamable HTTP or stdio transports
- Requiring OpenTelemetry observability
M
MCP Ts Core
Community
Building MCP servers with TypeScript infrastructure handled.
GitHub source repository ↗
43FMRS · D
mcp-ts-core is a powerful TypeScript framework suitable for developers wanting to build custom MCP servers. It provides many built-in features (auth, storage, telemetry) that can significantly accelerate development. Verified to support stdio and streamable-http transports, but this server provides no specific tools.
mcp-ts-core is an agent-native TypeScript framework for building MCP servers. It features declarative definitions (tool, resource, prompt), authentication, multi-backend storage, OpenTelemetry observability, and first-class support for Bun, Node, and Cloudflare Workers. The framework handles plumbing like transports, config, logging, lifecycle, and graceful shutdown, letting developers focus on their tools.
Tools
The tool list has not been reviewed yet.
Setup
Initialize a new project with 'bunx @cyanheads/mcp-ts-core init my-mcp-server', then cd into the directory and run 'bun install'.
claude_desktop_config.json
{
"mcpServers": {
"mcp-ts-core": {
"command": "bun",
"args": [
"run",
"start:stdio"
],
"env": {
"MCP_LOG_LEVEL": "info"
}
}
}
}
Fit and risk
Not for
- End-users who don't want to write code
- Those needing a pre-defined set of business tools
- Simple JSON-RPC services without framework overhead
Required permissions
- Access to environment variables for configuration
- May access filesystem (for storage) or network (for external APIs)
- If using Supabase or Cloudflare D1/KV/R2, those credentials are needed
Risks and side effects
- Dependency on external services (like Supabase) introduces security risks
- Misconfigured setups may expose the wrong transport (e.g., HTTP when stdio intended)
- OpenTelemetry may generate additional network traffic
Troubleshooting
- Check that Bun is installed (v1.3.0+)
- Run 'bun install' to ensure dependencies are complete
- Review environment setup (e.g., MCP_LOG_LEVEL, MCP_HTTP_PORT)
- Verify the .env file has correct values
Use cases
Building custom MCP servers
Integrating multiple tools into one server
Servers requiring authentication and multi-tenant storage
Deploying to Cloudflare Workers
Supported clients
Claude DesktopFull support
Claude CodeFull support