sem
local MCP serversem is a local MCP server: Entity-level code intelligence: semantic diff, impact analysis, blame, and context for AI agents. Install it from npm as @ataraxy-labs/sem.
Installation
Terminal
claude mcp add sem -- npx -y @ataraxy-labs/sem
Run in your project folder. Add --scope user to use it everywhere.
Claude Desktop, Cursor & other clients
Add to claude_desktop_config.json or .cursor/mcp.json.
{
"mcpServers": {
"sem": {
"command": "npx",
"args": [
"-y",
"@ataraxy-labs/sem"
]
}
}
}What you need
- Runtime: Node.js 18+ (runs with npx).
- MCP client: Claude Code, Codex, Antigravity, Claude Desktop, Cursor or any other client that speaks MCP over stdio.
Summary
Entity-level code intelligence: semantic diff, impact analysis, blame, and context for AI agents
sem vs similar servers
| Server | Stars | Type | API key | Runtime |
|---|---|---|---|---|
| sem | 3,364 | Local | No | npm |
| Entroly | 470 | Local | Yes | pypi |
| ckb | 109 | Local | No | npm |
| codegraph | 102 | Local | No | npm |
| Level MCP | 46 | Local | Yes | mcpb |
Questions
No. The registry entry lists no keys or environment variables.
Node.js 18+ (runs with npx), plus an MCP client such as Claude Code, Codex, Claude Desktop or Cursor.
sem is a local MCP server distributed as the npm package @ataraxy-labs/sem.
Run: claude mcp add sem -- npx -y @ataraxy-labs/sem
Run: codex mcp add sem -- npx -y @ataraxy-labs/sem
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