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 LichAmnesia/unreal-engine-agent-skills --skill ue5-phase-bansgit clone --depth 1 https://github.com/LichAmnesia/unreal-engine-agent-skillsWrote 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/lichamnesia/unreal-engine-agent-skills/ue5-phase-bans)<a href="https://agentmods.dev/skills/lichamnesia/unreal-engine-agent-skills/ue5-phase-bans"><img src="https://agentmods.dev/badge/skills/lichamnesia/unreal-engine-agent-skills/ue5-phase-bans/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/lichamnesia/unreal-engine-agent-skills/ue5-phase-bans"><img src="https://agentmods.dev/badge/skills/lichamnesia/unreal-engine-agent-skills/ue5-phase-bans.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00112 | $0.01434 |
| Opus 5 | $0.00056 | $0.00717 |
| Sonnet 5 | $0.00022 | $0.00287 |
| Haiku 4.5 | $0.00011 | $0.00143 |
Grade A, and why
ue5-phase-bans 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 11d 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 — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.
UE5 Phase Bans
Every skill you install argues for its own subject. A replication skill argues for replication. An ability-system skill argues for abilities. Each argument is correct in general and expensive right now, and no skill can tell you that, because no skill knows your phase.
The result is the most common failure in agent-driven UE5 work: an agent that solves the problem you have with the architecture of a problem you do not have yet. It is invisible while it happens, because every individual decision looks like good engineering.
A ban is how the phase talks back.
Settle the ban list before the first feature
- Name the phase in one sentence — what this phase must prove, and what it does not have to prove. A ban list without this is arbitrary.
- Ban by structural cost, not by taste. The test: if adopting it later means touching every system you have already written, it is a ban candidate. If it is a container choice or a naming convention, it is not.
- Write each ban with all four parts — banned thing, reason tied to this phase, what
to do instead, and the condition that lifts it. A ban missing "instead" gets
rationalized around, because the agent still has a real problem to solve. See
references/writing-a-ban.md. - Start from the five defaults in
references/ban-catalog.mdand delete the ones that do not apply. Four are widely understood; the fifth — test infrastructure past the minimum — is the one almost nobody bans and often the largest unbanned cost. - Record the result in the project context file via
ue5-project-context. A ban that lives only in a chat message is not a ban. - Adjudicate conflicts in favor of the ban, and log them. The procedure is in
references/writing-a-ban.md— follow the ban, record one line, keep going. Do not stop to ask; the ban already is the answer.
Load only what applies:
What ships with it
4 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.
- 11d ago First seen · 103 lines · 112 tokens per session scan A 4a1bfa24e330
ue5-phase-bans is a skill published in the GitHub repository LichAmnesia/unreal-engine-agent-skills (5 stars, last pushed 26d ago), licensed MIT. It adds 112 tokens to every session and 1,434 once invoked, about $0.0006 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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