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MCP Ts Core MCP Server

local only

MCP Ts Core runs on your own machine — the client starts it, so there is no endpoint to ping. 30 991 installs a week from npm. Last commit 26 Oct 2026.

Agent-native TypeScript framework for building MCP servers.

Installs per day peak 7 884 · avg 2 630 · +242% w/w
a month agotoday
30 991
Installs / week
npm · @cyanheads/mcp-ts-core
153
Stars
210 open issues
26 Oct 2026
Last commit
33 releases in 90 days
Apache-2.0
License
TypeScript

Nothing serious here today

Today is the operative word: we check MCP Ts Core every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

run in your terminal
claude mcp add mcp-ts-core -- npx -y @cyanheads/mcp-ts-core
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "mcp-ts-core": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/mcp-ts-core"
      ]
    }
  }
}
~/.codex/config.toml
[mcp_servers.mcp-ts-core]
command = "npx"
args = ["-y", "@cyanheads/mcp-ts-core"]
.cursor/mcp.json
{
  "mcpServers": {
    "mcp-ts-core": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/mcp-ts-core"
      ]
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "mcp-ts-core": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/mcp-ts-core"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: MCP_TRANSPORT_TYPE (Selects the HTTP transport), MCP_HTTP_HOST (The hostname for the HTTP server), MCP_HTTP_PORT (The port to run the HTTP server on), MCP_HTTP_ENDPOINT_PATH (The endpoint path for the MCP server), MCP_AUTH_MODE (Authentication mode to use: 'none', 'jwt', or 'oauth'), MCP_LOG_LEVEL (Sets the minimum log level for output (e.g., 'debug', 'info', 'warn')).

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MCP Ts Core — questions

Answers built from our own checks of this server.

Why is there no uptime for MCP Ts Core?
MCP Ts Core runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package @cyanheads/mcp-ts-core was installed 30 991 times last week.
How do I connect MCP Ts Core?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls @cyanheads/mcp-ts-core straight from npm; nothing to host, nothing to sign up for.
How many people use MCP Ts Core?
The npm package @cyanheads/mcp-ts-core was installed 30 991 times in the last week. Week over week that is +242%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is MCP Ts Core open source?
Yes — it is published under the Apache-2.0 licence, written in TypeScript, 153 stars on GitHub and 210 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.