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/ivanmurzak/unity-mcp/editor-selection-setnpx skills add IvanMurzak/Unity-MCP --skill editor-selection-setgit clone --depth 1 https://github.com/IvanMurzak/Unity-MCPWrote 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.
[](https://agentmods.dev/skills/ivanmurzak/unity-mcp/editor-selection-set)<a href="https://agentmods.dev/skills/ivanmurzak/unity-mcp/editor-selection-set"><img src="https://agentmods.dev/badge/skills/ivanmurzak/unity-mcp/editor-selection-set.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00047 | $0.01867 |
| Opus 5 | $0.00023 | $0.00933 |
| Sonnet 5 | $0.00009 | $0.00373 |
| Haiku 4.5 | $0.00005 | $0.00187 |
Grade A, and why
editor-selection-set 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 4d 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 — 245 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Editor / Selection / Set
Set the current Selection in the Unity Editor to the provided objects. Use 'editor-selection-get' tool to get the current selection first.
Inputs
select— array ofObjectRef. Every entry MUST resolve viaFindObject(); otherwise the tool throws before touchingSelection.objects.
Behavior
Assigns the resolved array to Selection.objects, then calls UnityEditorInternal.InternalEditorUtility.RepaintAllViews() so Hierarchy/Inspector reflect the change. Returns the post-change SelectionData snapshot.
How to Call
unity-mcp-cli run-tool editor-selection-set --input '{
"select": "string_value"
}'
For complex input (multi-line strings, code), save the JSON to a file and use:
unity-mcp-cli run-tool editor-selection-set --input-file args.jsonOr pipe via stdin (recommended):
unity-mcp-cli run-tool editor-selection-set --input-file - <<'EOF' {"param": "value"} EOF
Troubleshooting
If unity-mcp-cli is not found, either install it globally (npm install -g unity-mcp-cli) or use npx unity-mcp-cli instead.
Read the /unity-initial-setup skill for detailed installation instructions.
Input
| Name | Type | Required | Description |
|---|---|---|---|
select |
any |
Yes |
Input JSON Schema
{
"type": "object",
"properties": {
"select": {
"$ref": "#/$defs/AIGD.ObjectRef-1"
}
},
"$defs": {
"AIGD.ObjectRef": {
"type": "object",
"properties": {
"instanceID": {
"type": "integer",
"description": "instanceID of the UnityEngine.Object. If this is '0', then it will be used as 'null'."
}
},
"required": [
"instanceID"
],
"description": "Reference to UnityEngine.Object instance. It could be GameObject, Component, Asset, etc. Anything extended from UnityEngine.Object."
},
"AIGD.ObjectRef-1": {
"type": "array",
"items": {
"$ref": "#/$defs/AIGD.ObjectRef",
"description": "Reference to UnityEngine.Object instance. It could be GameObject, Component, Asset, etc. Anything extended from UnityEngine.Object."
}
}
},
"required": [
"select"
]
}
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.
- 4d ago First seen · 245 lines · 47 tokens per session scan A 6eeaf922133a
editor-selection-set is a skill published in the GitHub repository IvanMurzak/Unity-MCP (4,079 stars, last pushed 9d ago), licensed Apache-2.0. It adds 47 tokens to every session and 1,867 once invoked, about $0.0002 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 2026-08-30.
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