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mixinmcp-tools

mixinmcp-tools is a skill for Claude Code, Codex from muon-rw/MixinMCP. It costs 202 tokens per session (5,482 once invoked), scanned B, original, GPL-3.0.

An IntelliJ-based tool for finding and changing code across a JVM project's full classpath, including libraries, the JDK, Gradle plugins, and Minecraft sources.

In plain words
What is it for?
Use it to inspect dependency and library source code and refactor code across a JVM or Minecraft project.
Why use it?
It helps when code you need is outside your project's own files, where ordinary text search may not find or understand it.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

not rated 7repo changed 15d ago B scan 202 tokens GPL-3.0

Good fit Use it to inspect dependency and library source code and refactor code across a JVM or Minecraft project.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/muon-rw/mixinmcp/mixinmcp-tools
View source ↗ muon-rw/MixinMCP
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.

Any agent
npx skills add muon-rw/MixinMCP --skill mixinmcp-tools
Clone the repo
git clone --depth 1 https://github.com/muon-rw/MixinMCP

Made for: Claude Code, Codex.

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 mixinmcp-tools

README.md
[![agentmods](https://agentmods.dev/badge/skills/muon-rw/mixinmcp/mixinmcp-tools/github.svg)](https://agentmods.dev/skills/muon-rw/mixinmcp/mixinmcp-tools)
Your own site
<a href="https://agentmods.dev/skills/muon-rw/mixinmcp/mixinmcp-tools"><img src="https://agentmods.dev/badge/skills/muon-rw/mixinmcp/mixinmcp-tools/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 mixinmcp-tools

Your own site · 80×15
<a href="https://agentmods.dev/skills/muon-rw/mixinmcp/mixinmcp-tools"><img src="https://agentmods.dev/badge/skills/muon-rw/mixinmcp/mixinmcp-tools.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 202 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,482 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00202 $0.05482
Opus 5.5 $0.00081 $0.02193
Sonnet 5.5 $0.00040 $0.01096
Haiku 4.5 $0.00020 $0.00548

Measured 15d ago against content hash 7f6c3f7664b6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

mixinmcp-tools scanned grade B with 1 finding 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 15d 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.

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

3. Verify the IntelliJ MCP server is connected in Antigravity: `agy mcp list` (or **Additional Options (`...`) → MCP Servers** in the UI) should show it. If not, use `agy mcp add jetbrains http://127.0.0.1:64342/stream`
antigravity-plugin/skills/mixinmcp-tools/SKILL.md · 196 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 15d ago Changed · +1 lines · +11 tokens per session scan A → B 7f6c3f7664b6
  2. 1mo ago Changed · +2 lines c48405b0e3e7
  3. 1mo ago Changed 81cd27669ef2
  4. 1mo ago Changed · +24 lines 6d6c3d9943d0
  5. 2mo ago Changed · +3 lines 0c453af69dee
  6. 2mo ago First seen · 166 lines · 191 tokens per session scan A 09a40a543597

Subscribe to this mod's changes

mixinmcp-tools is a skill published in the GitHub repository muon-rw/MixinMCP (7 stars, last pushed 15d ago), licensed GPL-3.0. It adds 202 tokens to every session and 5,482 once invoked, about $0.0008 per session on Opus 5.5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Related

mixinmcp-tools compared with skills from other repositories

mixinmcp-tools next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
mixinmcp-toolsmuon-rw/MixinMCPSkill715d agoGPL-3.0B202Claude Code, Codex
imagegenopenai/codexSkill133kyesterdayApache-2.0A113Codex
playwright-climicrosoft/playwrightSkill99kyesterdayApache-2.0A19Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginnersSkill79k4d agoMITA200Claude Code, Codex
systematic-debuggingobra/superpowersSkill313k3d agoMITA21Claude Code
next-cache-components-adoptionvercel/next.jsSkill143kyesterdayMITA95Claude Code
next-partial-prefetching-adoptionvercel/next.jsSkill143kyesterdayMITA103Claude Code