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-project-contextgit 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-project-context)<a href="https://agentmods.dev/skills/lichamnesia/unreal-engine-agent-skills/ue5-project-context"><img src="https://agentmods.dev/badge/skills/lichamnesia/unreal-engine-agent-skills/ue5-project-context/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-project-context"><img src="https://agentmods.dev/badge/skills/lichamnesia/unreal-engine-agent-skills/ue5-project-context.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 | $0.00127 | $0.01308 |
| Opus 5 | $0.00063 | $0.00654 |
| Sonnet 5 | $0.00025 | $0.00262 |
| Haiku 4.5 | $0.00013 | $0.00131 |
Grade A, and why
ue5-project-context 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 — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.
UE5 Project Context
The most expensive failure in agent-driven UE5 work is not bad code. It is an agent that invents a module name, assumes an engine version, and writes three files against a plugin that is not enabled. Every guess is cheap individually and compounds badly.
Fix it by externalizing project facts into one file that every skill reads before acting.
Establish the contract first
- Discover, never assume. Engine version, engine install path, and plugin state come
from commands run on this machine, not from priors. On macOS, get them via
ue5-macos-apple-silicon. - Write the facts to
.agents/ue5-project-context.mdusingreferences/context-template.md. One file, at the repo root, in version control. - Declare dependency direction between modules, not just names. Presentation must not
drive simulation. See
references/module-boundaries.md. - Declare units and conventions once — centimeters, seconds, degrees, and every conversion the project uses (knots, meters, kilometers). Unit drift is the top source of silent gameplay bugs in vehicle projects.
- Record the phase bans decided by
ue5-phase-bansinto this file. This skill owns the row format and the fact that the section exists; it does not decide what belongs in it. Without the section, an agent that loads a good replication skill will helpfully add replication to a single-player prototype. - Record only commands that have actually run here, with their real absolute paths and their last-succeeded date. A runbook of plausible commands is worse than no runbook.
- Re-verify on drift. Engine upgrade, plugin change, or a failed command invalidates
the file. Stale context is the failure mode this skill creates if unmaintained; treat
last_verifiedas load-bearing.
Load only what applies:
references/context-template.md— the file to write.references/module-boundaries.md— splitting modules and keeping dependency direction one-way.
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.
- 10d ago First seen · 95 lines · 127 tokens per session scan A 2d8af936428b
ue5-project-context is a skill published in the GitHub repository LichAmnesia/unreal-engine-agent-skills (5 stars, last pushed 25d ago), licensed MIT. It adds 127 tokens to every session and 1,308 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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