isuzu-unity-cli

isuzu-unity-cli is a skill for Claude Code, Codex from isuzu-shiranui/UnityMCP. It costs 73 tokens per session (2,153 once invoked), scanned A, original, MIT.

A command-line tool for controlling a running Unity Editor, the application used to build games with Unity. It can run C# code, inspect scenes and objects, read console messages, capture screenshots, check compilation, control play mode, and run menu commands.

In plain words
What is it for?
Use it to inspect Unity projects and scene hierarchies, change GameObjects, run code, check compile status, manage play mode, view logs, and capture screenshots.
Why use it?
It lets an agent inspect and operate Unity directly, while using existing console errors and warnings to investigate problems.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to inspect Unity projects and scene hierarchies, change GameObjects, run code, check compile status, manage play mode, view logs, and capture screenshots.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/isuzu-shiranui/unitymcp/isuzu-unity-cli
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 isuzu-shiranui/UnityMCP --skill isuzu-unity-cli
Clone the repo
git clone --depth 1 https://github.com/isuzu-shiranui/UnityMCP

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 isuzu-unity-cli

README.md
[![agentmods](https://agentmods.dev/badge/skills/isuzu-shiranui/unitymcp/isuzu-unity-cli/github.svg)](https://agentmods.dev/skills/isuzu-shiranui/unitymcp/isuzu-unity-cli)
Your own site
<a href="https://agentmods.dev/skills/isuzu-shiranui/unitymcp/isuzu-unity-cli"><img src="https://agentmods.dev/badge/skills/isuzu-shiranui/unitymcp/isuzu-unity-cli/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 isuzu-unity-cli

Your own site · 80×15
<a href="https://agentmods.dev/skills/isuzu-shiranui/unitymcp/isuzu-unity-cli"><img src="https://agentmods.dev/badge/skills/isuzu-shiranui/unitymcp/isuzu-unity-cli.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 73 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,153 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Excessive Agency · line 137
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
How audits are shown
Origin original 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 $0.00073 $0.02153
Opus 5.5 $0.00029 $0.00861
Sonnet 5.5 $0.00015 $0.00431
Haiku 4.5 $0.00007 $0.00215

Measured 1mo ago against content hash 7a7062b48ecc, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

isuzu-unity-cli 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 1mo 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.

isuzu-unity-cli/skills/isuzu-unity-cli/SKILL.md · 124 lines

How it starts

The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.

isuzu-unity-cli

Each command talks to the Unity Editor that has this project open and prints compact JSON. A call returns when its work is done: play_mode_play returns once play mode has started, and a call that takes long waits for its result.

Rules

  • Do not list tools. The table below covers common work; for anything else run isuzu-unity-cli tools --search <words>, then isuzu-unity-cli tools <name>.
  • Put every call you already know into one shell command with the template below. Do not read again to confirm a change: each reply already shows the result, and you can answer from it.
  • Windows PowerShell deletes double quotes inside arguments, so never pass JSON text. Use --name value; repeat an option for a list (--paths a --paths b); --values.m_Mass 2 sets one field of an object argument; a vector is --position '1,0,2'; anything else goes in a file: --args-file args.json.
  • Single-quote values with spaces, commas or @: '/Main Camera', 'error,warning', '@scene:/Boss/Enemy/health'. Unquoted, PowerShell splits 1,0,2 into three words.
  • Scene paths start with /. Siblings that share a name take a 0-based index: /Audio/Speaker[1].
  • Property paths are serialized names (m_Mass, m_LocalPosition.x, a script's field name); the C# name (mass) also works when it is unambiguous, and a miss lists the nearest names.

Template

function u { isuzu-unity-cli @args; if ($LASTEXITCODE) { throw "isuzu-unity-cli $args failed ($LASTEXITCODE)" } }
try {
  u call play_mode_play
  u call ui_click --text Start
} finally { isuzu-unity-cli call play_mode_stop }

A failed call throws, so the calls after it do not run on a broken state, and finally leaves play mode. Without play mode, the try/finally is not needed.

Tasks

Task Calls
Fix compile errors u verify prints each error with the source lines around it; after the edit, u verify --test --filter <regex> compiles and runs the tests in one call
Run tests u verify --no-compile --test --filter <regex> (EditMode; tests: none matched when nothing matched)
Console errors and warnings u call console_read_logs --type 'error,warning' --limit 30
Find objects u call scene_browse_hierarchy --name <text> or --component <Type>
Objects matching a condition execute_code with McpSnippet.All<T>(true) and McpSnippet.PathOf (below)
Every property of an object u call inspect_list --object_path <path> --detail full
Read or write a property u call inspect_read --object_path <path> --property_path <prop>; inspect_write also takes --value <v>, or --values.<prop> <v> for several. The component is found from the property; add --component_type <Type> when several have it
Change a prefab asset u call inspect_write --asset_path Assets/X.prefab --property_path <prop> --value <v> saves it; overriddenBy lists scene instances that keep their own value; --object_path Child/Name for a child
Create an object u call gameobject_create --name <n> --parent_path <path> --position '1,0,2'
Add a component u call gameobject_add_component --object_path <path> --component_type <Type> --values.<field> <v>
Many objects by a formula foreach ($i in 0..9) { u call gameobject_create --name "Item$i" --parent_path /Root --position "$($i * 2),0,0"; u call gameobject_add_component --object_path "/Root/Item$i" --component_type Rigidbody --values.m_Mass ($i + 1) }, then u call scene_save
Add a script, then use it one command: write the file, u verify, u call gameobject_add_component --object_path /<name> --component_type <Class> --values.<field> <v>, u call scene_save. A name without a leading / is looked up anywhere in the scene
Why a camera does not draw an object the second snippet below gives every usual cause in one call; fix the one it shows with inspect_write, then u call scene_save
Exception in play mode u call play_mode_play, u call play_mode_step --count 150, u call console_read_logs --type error --stack_trace true --limit 5
A value while playing, or its value after each call that changes it u call play_mode_play --paused, then u call play_mode_step --seconds 3 --changes --paths '@scene:/<object>/<Component>/<field>': changes lists [frame, time, value] each time the value changed, which is its value right after the code that changed it. No breakpoints or source reading needed
Press a uGUI button u call ui_click --text <label> (or --object_path): textChanges shows the text it changed
Save the scene u call scene_save

Read the full file on GitHub · 124 lines

Files

What ships with it

2 files 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. 1mo ago Changed · +13 lines 7a7062b48ecc
  2. 1mo ago Changed · -127 lines · -24 tokens per session 72847dfaa975
  3. 1mo ago Changed · +3 lines 3cf94dbad111
  4. 1mo ago Changed · -163 lines 8d9ac779bd45
  5. 1mo ago Changed · +20 lines 072ff3c487c3
  6. 1mo ago Changed · +50 lines 1188383345c2
  7. 1mo ago First seen · 328 lines · 97 tokens per session scan A 33e094c8c6ca

Subscribe to this mod's changes

isuzu-unity-cli is a skill published in the GitHub repository isuzu-shiranui/UnityMCP (336 stars, last pushed 14d ago), licensed MIT. It adds 73 tokens to every session and 2,153 once invoked, about $0.0003 per session on Opus 5.5. 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 2026-09-05.