mc-agent-toolkit

mc-agent-toolkit is a plugin for Claude Code from monte-carlo-data/mc-agent-toolkit. Its token cost is not measured, scanned A, original, Apache-2.0.

A collection of add-ons for AI coding agents working with data systems. It helps inspect data quality, alerts, monitoring coverage, incidents, and related dbt or database changes.

In plain words
What is it for?
Use it for data-observability tasks such as incident response, proactive monitoring, monitor-gap checks, catalog work, storage-cost analysis, and pushing data into Monte Carlo.
Why use it?
It gives an agent context about possible data problems and the effects of editing data transformations before changes are made.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Good fit Use it for data-observability tasks such as incident response, proactive monitoring, monitor-gap checks, catalog work, storage-cost analysis, and pushing data into Monte Carlo.

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Install in Claude Code
/plugin marketplace add monte-carlo-data/mc-agent-toolkit
/plugin install mc-agent-toolkit
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/monte-carlo-data/mc-agent-toolkit

Made for: Claude Code.

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 mc-agent-toolkit

README.md
[![agentmods](https://agentmods.dev/badge/plugins/monte-carlo-data/mc-agent-toolkit/claude-code/github.svg)](https://agentmods.dev/plugins/monte-carlo-data/mc-agent-toolkit/claude-code)
Your own site
<a href="https://agentmods.dev/plugins/monte-carlo-data/mc-agent-toolkit/claude-code"><img src="https://agentmods.dev/badge/plugins/monte-carlo-data/mc-agent-toolkit/claude-code/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for mc-agent-toolkit

Your own site · 80×15
<a href="https://agentmods.dev/plugins/monte-carlo-data/mc-agent-toolkit/claude-code"><img src="https://agentmods.dev/badge/plugins/monte-carlo-data/mc-agent-toolkit/claude-code.svg" alt="Reviewed on agentmods" width="80" 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. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

mc-agent-toolkit 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 3d 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.

plugins/claude-code/.claude-plugin/plugin.json · 40 lines

What it actually says

{
  "name": "mc-agent-toolkit",
  "version": "1.28.0",
  "description": "Monte Carlo Agent Toolkit — data observability for AI coding agents. Surfaces blast radius, active alerts, and monitor coverage gaps before you edit dbt SQL. Includes skills for incident response, proactive monitoring, storage cost analysis, and push ingestion. Hooks enforce data-safety checks automatically as you work.",
  "author": {
    "name": "Monte Carlo",
    "url": "https://www.montecarlodata.com",
    "email": "[email protected]"
  },
  "homepage": "https://docs.getmontecarlo.com/docs/agent-toolkit",
  "repository": "https://github.com/monte-carlo-data/mc-agent-toolkit",
  "license": "Apache-2.0",
  "keywords": [
    "monte-carlo",
    "data-observability",
    "agent-toolkit",
    "prevent",
    "push-ingestion",
    "onboarding",
    "validation-notebook",
    "monitoring-advisor",
    "dbt",
    "schema"
  ],
  "skills": "./skills/",
  "mcpServers": "./.mcp.json",
  "commands": [
    "./commands/prevent/",
    "./commands/push-ingestion/",
    "./commands/monitoring-advisor/",
    "./commands/catalog/",
    "./commands/incident-response/",
    "./commands/proactive-monitoring/",
    "./commands/instrument-agent/",
    "./commands/troubleshoot-agent-traces/",
    "./commands/onboarding/"
  ],
  "hooks": ["./hooks/prevent/hooks.json", "./hooks/telemetry/hooks.json"]
}
Contents

What it installs

The manifest is a name and a version. 1 MCP server travel with it, and installing the plugin installs all of them. Each is measured on its own page, and each can be installed alone.

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. 3d ago Changed 72d2de0e9c79
  2. 9d ago Changed d9dbb486d41d
  3. 10d ago Changed 0a7e2804118d
  4. 15d ago Changed 3b1ad2bffa56
  5. 16d ago Changed d67cbd419f55
  6. 17d ago Changed 6b2964cb4abc
  7. 18d ago Changed da4c81179612
  8. 21d ago Changed c4b1e9f1da1d
  9. 22d ago Changed · +2 lines 86f358447d4c
  10. 1mo ago First seen · 38 lines scan A 54ef1a53ec6c

Subscribe to this mod's changes

mc-agent-toolkit is a plugin published in the GitHub repository monte-carlo-data/mc-agent-toolkit (93 stars, last pushed today), licensed Apache-2.0. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-08-30.