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.
npx agentmods add skills/arktarusov/unity-cli-plugin/unity-pipelinenpx skills add ArkTarusov/unity-cli-plugin --skill unity-pipelinegit clone --depth 1 https://github.com/ArkTarusov/unity-cli-pluginWhat 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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00097 | $0.02776 |
| Opus 5 | $0.00048 | $0.01388 |
| Sonnet 5 | $0.00019 | $0.00555 |
| Haiku 4.5 | $0.00010 | $0.00278 |
Grade A, and why
unity-pipeline 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 2d 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.
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.
Driving the Unity Editor via UnityCLI
The Unity Pipeline package (com.unity.pipeline) runs a local HTTP server inside the Editor; unity command executes commands against it live — no relaunch, no batch mode. The exposed surface is full authoring (scenes, GameObjects, prefabs, materials, animation, script creation, packages, tests, builds) — the same command set MCP-based Unity integrations wrap, reachable without an MCP bridge. Prerequisite basics (PATH, --json, auth): see skill unity-cli-core.
Argument syntax — the #1 source of silent failures
The only working form is --flag value with snake_case names:
unity command set_transform --gameobject Player --position "[1,2,3]"
Every other form — key=value, positional, -- key=value, kebab-case (--save-path) — is dropped silently: the command reports success and runs with defaults. Verified failure mode: a click command "succeeds" while clicking at (0,0); a path=... argument becomes a literally-named folder. Missing required parameters do fail loudly (400) — only unknown/malformed forms vanish.
Two mandatory habits:
- Verify the echo. Every response carries
data.parameters— the arguments the server actually received. After any mutating or surprising call, check your arguments are in there. An emptyparameters: {}when you passed arguments means they were dropped. - Verify the schema on doubt. Argument names are not uniform across commands (
delete_asset --asset, butopen_scene --path). references/editor-commands.md lists the core commands with arguments; on a mismatch, the live truth isunity --json command(full JSON schemas, per-project).
Prerequisites — check, don't install
Live control needs BOTH: UnityCLI on the machine AND the Unity Pipeline package (com.unity.pipeline) inside the target project. The CLI alone can install/open editors but cannot talk to a running Editor.
unity status— is an Editor running? GUI editors only: an editor launched with-batchmodeserves commands but never appears here — probe it withunity command --project-path <path>instead.unity pipeline list— does the project show Pipeline: Installed?
What ships with it
3 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.
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.
- 2d ago First seen · 124 lines · 97 tokens per session scan A 538bbd05c248
unity-pipeline is a skill published in the GitHub repository ArkTarusov/unity-cli-plugin (6 stars, last pushed 14d ago), licensed MIT. It adds 97 tokens to every session and 2,776 once invoked, about $0.0005 per session on Opus 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 2026-08-31.
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