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 skills add Italink/UnrealClientProtocol --skill unreal-pie-controlgit clone --depth 1 https://github.com/Italink/UnrealClientProtocolWrote 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/italink/unrealclientprotocol/unreal-pie-control)<a href="https://agentmods.dev/skills/italink/unrealclientprotocol/unreal-pie-control"><img src="https://agentmods.dev/badge/skills/italink/unrealclientprotocol/unreal-pie-control/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.
<a href="https://agentmods.dev/skills/italink/unrealclientprotocol/unreal-pie-control"><img src="https://agentmods.dev/badge/skills/italink/unrealclientprotocol/unreal-pie-control.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 5.1 | $0.00052 | $0.01116 |
| Opus 5 | $0.00026 | $0.00558 |
| Sonnet 5 | $0.00010 | $0.00223 |
| Haiku 4.5 | $0.00005 | $0.00112 |
Grade A, and why
unreal-pie-control 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 10d 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 — 125 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Unreal PIE Control
Control Play In Editor (PIE) and Simulate In Editor (SIE) sessions through UCP's call command.
Prerequisite: The unreal-client-protocol skill must be available and the UE editor must be running with the UCP plugin enabled.
Custom Function Library
UPIEOperationLibrary
CDO Path: /Script/UnrealClientProtocolEditor.Default__PIEOperationLibrary
| Function | Params | Returns | Description |
|---|---|---|---|
StartPIE |
(none) | bool |
Start a Play In Editor session |
StartSimulate |
(none) | bool |
Start a Simulate In Editor session |
StopPIE |
(none) | (void) | Stop the current PIE/SIE session |
IsInPIE |
(none) | bool |
Whether a play session is in progress |
IsSimulating |
(none) | bool |
Whether a simulate session is in progress |
PausePIE |
(none) | bool |
Pause all PIE worlds |
ResumePIE |
(none) | bool |
Resume all PIE worlds |
GetPIEWorlds |
(none) | TArray<UWorld*> |
Get all PIE world instances |
Examples
Start PIE:
{"object":"/Script/UnrealClientProtocolEditor.Default__PIEOperationLibrary","function":"StartPIE"}
Stop PIE:
{"object":"/Script/UnrealClientProtocolEditor.Default__PIEOperationLibrary","function":"StopPIE"}
Start Simulate:
{"object":"/Script/UnrealClientProtocolEditor.Default__PIEOperationLibrary","function":"StartSimulate"}
Check if PIE is running:
{"object":"/Script/UnrealClientProtocolEditor.Default__PIEOperationLibrary","function":"IsInPIE"}
Pause PIE:
{"object":"/Script/UnrealClientProtocolEditor.Default__PIEOperationLibrary","function":"PausePIE"}
Get PIE worlds:
{"object":"/Script/UnrealClientProtocolEditor.Default__PIEOperationLibrary","function":"GetPIEWorlds"}
Engine Built-in APIs
UEditorLevelLibrary
CDO Path: /Script/EditorScriptingUtilities.Default__EditorLevelLibrary
| Function | Description |
|---|---|
GetPIEWorlds() |
Get worlds from Play-In-Editor sessions (alternative to custom library) |
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.
- 10d ago First seen · 125 lines · 52 tokens per session scan A 6737fd4be399
unreal-pie-control is a skill published in the GitHub repository Italink/UnrealClientProtocol (125 stars, last pushed 12d ago), licensed MIT. It adds 52 tokens to every session and 1,116 once invoked, about $0.0003 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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