Hermes Prime MCP Server

by hermes-labs-ai Your server? Claim it

local only

Hermes Prime runs on your own machine — the client starts it, so there is no endpoint to ping. 99 installs a week from pypi. Last commit 23 Sep 2026.

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

Installs per day peak 35 · avg 16 · -3% w/w

a month agotoday

Installs / week

pypi · hermes-prime-mcp

Stars

0 open issues

23 Sep 2026

Last commit

from GitHub

MIT

License

Shell

What changed 1

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 25 September 2026. No other catalogue keeps this.

25 Sep the owner changed

Nothing serious here today

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

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.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

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

~/Library/Application Support/Claude/claude_desktop_config.json

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

~/.codex/config.toml

[mcp_servers.hermes-prime]
command = "uvx"
args = ["hermes-prime-mcp"]

.cursor/mcp.json

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

.vscode/mcp.json

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

Optional settings from the registry entry, left out of the block above: HERMES_PRIME_FRAGMENT_ROOT (Directory containing a trusted custom CLAUDE-fragment.md (default: the versioned card bundled with the installed package)).

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Hermes Prime — questions

Answers built from our own checks of this server.

Why is there no uptime for Hermes Prime?

Hermes Prime 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 pypi package hermes-prime-mcp was installed 99 times last week.

How do I connect Hermes Prime?

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 hermes-prime-mcp straight from pypi; nothing to host, nothing to sign up for.

How many people use Hermes Prime?

The pypi package hermes-prime-mcp was installed 99 times in the last week. Week over week that is -3%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Hermes Prime open source?

Yes — it is published under the MIT licence, written in Shell and 2 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.