Hermes Prime MCP Server

by hermes-labs-aiio.github.hermes-labs-ai/hermes-primev0.2.1-alpha.1

Read-only stdio MCP server for a versioned convention card in Claude Code.

2Pythonstdioofficial registry

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Active16d ago

Install Hermes Prime MCP server

claude mcp add hermes-prime -- uvx hermes-prime-mcp hermes-prime-mcp

{
  "mcpServers": {
    "hermes-prime": {
      "command": "uvx",
      "args": [
        "hermes-prime-mcp",
        "hermes-prime-mcp"
      ]
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "hermes-prime": {
      "command": "uvx",
      "args": [
        "hermes-prime-mcp",
        "hermes-prime-mcp"
      ]
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "hermes-prime": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "hermes-prime-mcp",
        "hermes-prime-mcp"
      ]
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "hermes-prime": {
      "command": "uvx",
      "args": [
        "hermes-prime-mcp",
        "hermes-prime-mcp"
      ]
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
HERMES_PRIME_FRAGMENT_ROOT	—	—	Directory containing a trusted custom CLAUDE-fragment.md (default: the versioned card bundled with the installed package).

Freshness

Active — last maintenance signal 16d ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-09-23 · 16d ago · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-09-18 · 22d ago · official registry · v0.2.1-alpha.1

FAQ

›How do I install the Hermes Prime MCP server in Claude Code?

Run: claude mcp add hermes-prime -- uvx hermes-prime-mcp hermes-prime-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Hermes Prime require an API key?

No required environment variables are declared in its published metadata.

›Can I use Hermes Prime as a remote (hosted) MCP server?

No hosted endpoint is published; it runs locally over stdio.

›Is Hermes Prime in the official MCP registry?

Yes, as io.github.hermes-labs-ai/hermes-prime.