cigar

cigar is an MCP server for Claude Code, Codex, Cursor, Gemini CLI, OpenCode from hashgraph-online/hol-cigar. Its token cost is not measured, scanned A, original, Apache-2.0.

An MCP server, which lets an agent use external tools, for the CIGAR system.

In plain words
What is it for?
Starting the CIGAR service with the plugin’s configured data and installation paths.
Why use it?
It provides CIGAR through Claude Code’s tool-connection interface instead of requiring direct manual commands.

MCP server for Claude CodeCodexCursorGemini CLIOpenCode

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the cigar plugin — 5 skills, 3 agents, 18 hooks, 1 MCP server shipped together

Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add hashgraph-online/hol-cigar
Claude Code
/plugin install cigar

Made for: Claude Code, Codex, Cursor, Gemini CLI, OpenCode.

Or install cigar, the plugin that ships this one along with the rest of its 5 skills, 3 agents, 18 hooks, 1 MCP server.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for cigar

README.md
[![agentmods](https://agentmods.dev/badge/mcp/hashgraph-online/hol-cigar/claude-code-cigar.svg)](https://agentmods.dev/mcp/hashgraph-online/hol-cigar/claude-code-cigar)
Your own site
<a href="https://agentmods.dev/mcp/hashgraph-online/hol-cigar/claude-code-cigar"><img src="https://agentmods.dev/badge/mcp/hashgraph-online/hol-cigar/claude-code-cigar.svg" alt="Measured on agentmods" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

cigar scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

adapters/claude-code/.mcp.json · 12 lines

What it actually says

{
  "cigar": {
    "command": "${CLAUDE_PLUGIN_ROOT}/bin/cigar-mcp",
    "args": [
      "serve"
    ],
    "env": {
      "CIGAR_CLAUDE_PLUGIN_ROOT": "${CLAUDE_PLUGIN_ROOT}",
      "CIGAR_CLAUDE_PLUGIN_DATA": "${CLAUDE_PLUGIN_DATA}"
    }
  }
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 12 lines scan A 0c8301e9cd8e

Subscribe to this mod's changes

cigar is an MCP server published in the GitHub repository hashgraph-online/hol-cigar (8 stars, last pushed 2d ago), licensed Apache-2.0. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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