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uefn-mcp

Use UEFN's current Unreal MCP toolsets safely and efficiently.

Skill by RCSnyder

IndexedMIT
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Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/rcsnyder-uefn-mcp

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Use UEFN's current Unreal MCP toolsets safely and efficiently. Use whenever an agent needs to inspect or modify the UEFN editor, Scene Graph, Creative devices, Verse, compilation, or play-session state.

Use cases: agent-building

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Permissions

What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

Tools
No tools found
Secrets
None asked for
Install scripts
None found

Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/uefn-mcp

What's inside

Skill name
uefn-mcp
Description
Use UEFN's current Unreal MCP toolsets safely and efficiently. Use whenever an agent needs to inspect or modify the UEFN editor, Scene Graph, Creative devices, Verse, compilation, or play-session state.
License
MIT
Instructions
34 lines in SKILL.md · view on GitHub

Files (2)

  • SKILL.md
  • recovery.md · references/

SKILL.md (first lines)

# UEFN MCP

Treat the live MCP server as the source of truth for available tools.

## Tool-search loop

1. Discover/list toolsets.
2. Identify the smallest relevant toolset.
3. Describe that toolset to obtain current schemas.
4. Dispatch the required operation.
5. Require explicit success before continuing.
6. Repeat only as needed.

Do **not** preload or memorize hundreds of leaf tools.

## Critical execution rule

Call Unreal MCP operations **serially**.
Do not issue overlapping calls.
The editor executes tool invocations on the game thread.

## Change rule

Prefer small, reviewable editor operations.
Do not batch a giant island rewrite into one opaque call.

## Coordinates

Do not assume transform conventions.
Read the current tool schema and inspect nearby existing transforms before writing coordinates.

For recovery, see [references/recovery.md](references/recovery.md).

From RCSnyder/open-uefn-kit, MIT.

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Last commit (this folder)
Aug 30, 2026 (2 months ago)
Last release
Sep 1, 2026 (1 month ago)

From GitHub (fetched Oct 24, 2026).

Details

License
MIT
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

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Cite this page

uefn-mcp skill. Agent Mart. https://agentmart.dev/skills/rcsnyder-uefn-mcp (last updated 2026-10-24)