What is ue-official-mcp-5.8.0?

Routing guidance for controlling a running Unreal Engine 5.8.0 editor through its official MCP server, a connection that lets an agent call editor tools.

Use it for Unreal Engine editor automation such as actors, Blueprints, materials, animation, meshes, UI, data tables, and tests.

It helps choose the correct tool and account for the editor’s version and serial execution requirements.

ue-official-mcp-5.8.0 — Skill for Claude Code and Codex by tc-imba

Install

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.

Any agent

npx skills add tc-imba/ue-official-mcp --skill ue-official-mcp-5.8.0

Clone the repo

git clone --depth 1 https://github.com/tc-imba/ue-official-mcp

Made for: Claude Code, Codex.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/tc-imba/ue-official-mcp/ue-official-mcp-5.8.0/github.svg)](https://agentmods.dev/skills/tc-imba/ue-official-mcp/ue-official-mcp-5.8.0)

Your own site

<a href="https://agentmods.dev/skills/tc-imba/ue-official-mcp/ue-official-mcp-5.8.0"><img src="https://agentmods.dev/badge/skills/tc-imba/ue-official-mcp/ue-official-mcp-5.8.0/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/tc-imba/ue-official-mcp/ue-official-mcp-5.8.0"><img src="https://agentmods.dev/badge/skills/tc-imba/ue-official-mcp/ue-official-mcp-5.8.0.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 145 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,336 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00145	$0.01336
Opus 5	$0.00072	$0.00668
Sonnet 5	$0.00029	$0.00267
Haiku 4.5	$0.00015	$0.00134

Measured 12d ago against content hash c4479fafe7df, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

ue-official-mcp-5.8.0 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 12d 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.

skills/ue-official-mcp-5.8.0/SKILL.md · 70 lines

How it starts

The opening of the file, as written. The whole thing — 70 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ue-official-mcp-5.8.0 — pick the right UE 5.8.0 MCP tool

Operational routing for the official Unreal Engine 5.8.0 MCP server (the ModelContextProtocol plugin). This skill is the decision layer + an index into the generated tool catalog under references/. All schemas in this skill are captured from UE 5.8.0 — for other engine versions (including UE 5.8 patch releases) use the matching ue-official-mcp-<X.Y.Z> skill, since the MCP plugin is Experimental and surfaces drift between releases.

With AllToolsets enabled, the server exposes dozens of toolsets / hundreds of tools over HTTP (streamable, default http://127.0.0.1:8000/mcp). It requires the editor running and runs serially on the game thread — never issue overlapping calls. For the exact live counts and the snapshot date this reference was generated from, see references/index.md.

When to use

Before any official-MCP editor-automation call — to choose which toolset/tool fits the task, then read the matching references/*.md for tool names and (in the raw per-toolset file under references/toolsets/) the full input/output JSON schemas. Call directly from those schemas — no describe_toolset pre-flight needed.

How to call

Tool Search is on, so tools/list shows only 3 meta-tools. In a Claude Code session they surface as mcp__<server-key>__*, where <server-key> is the name given to the server in the MCP client's .mcp.json (Epic's setup example uses unreal-mcp → mcp__unreal-mcp__*). The three meta-tools:

list_toolsets — names + summaries of the enabled toolsets. Don't call for discovery: use the routing table below.
describe_toolset(toolset_name) — the tools (names + schemas) in one toolset. Only call as the recovery path when a call_tool returns a schema-shaped error (missing/unknown field, wrong type), to check whether the live schema has drifted from the file.
call_tool(name, arguments) — dispatch a tool; result returns on the same turn.

Read the full file on GitHub · 70 lines

Files

What ships with it

60 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.

Changes

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.

12d ago First seen · 70 lines · 145 tokens per session scan A c4479fafe7df

Subscribe to this mod's changes

ue-official-mcp-5.8.0 is a skill published in the GitHub repository tc-imba/ue-official-mcp (2 stars, last pushed 2mo ago), licensed MIT. It adds 145 tokens to every session and 1,336 once invoked, about $0.0007 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.

Game development agent-skill claude documentation mcp model-context-protocol ue5

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