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Tern MCP Server

local only

Tern runs on your own machine — the client starts it, so there is no endpoint to ping. 29 installs a week from npm.

Model Context Protocol (MCP) server for Tern E2E testing platform

Installs per day peak 74 · avg 6 · -5% w/w
a month agotoday
29
Installs / week
npm · @zyf8827/tern-mcp
—
Stars
on GitHub
—
Last commit
1 release in 90 days
—
License
language unknown

Nothing serious here today

Today is the operative word: we check Tern 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 tern -- npx -y @zyf8827/tern-mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "tern": {
      "args": [
        "-y",
        "@zyf8827/tern-mcp"
      ],
      "command": "npx"
    }
  }
}
~/.codex/config.toml
[mcp_servers.tern]
command = "npx"
args = ["-y", "@zyf8827/tern-mcp"]
.cursor/mcp.json
{
  "mcpServers": {
    "tern": {
      "args": [
        "-y",
        "@zyf8827/tern-mcp"
      ],
      "command": "npx"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "tern": {
      "args": [
        "-y",
        "@zyf8827/tern-mcp"
      ],
      "command": "npx"
    }
  }
}

This one needs environment variables set before it will start: TERN_URL (Base URL of the Tern server instance (defaults to http://127.0.0.1:7430)), TERN_TOKEN (API Bearer token for authenticating with the Tern server). The author declared them in the registry entry; get the values from the project itself.

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Tern — questions

Answers built from our own checks of this server.

Why is there no uptime for Tern?
Tern 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 @zyf8827/tern-mcp was installed 29 times last week.
How do I connect Tern?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls @zyf8827/tern-mcp straight from npm; nothing to host, nothing to sign up for.
How many people use Tern?
The npm package @zyf8827/tern-mcp was installed 29 times in the last week. Week over week that is -5%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.