MCP server CX Codex

Lumen · qompassai — Claude Code MCP server: features and setup

Q: How does Lumen enforce tool-call rules?

Each call is checked against `lumen-policy.toml` before execution. Decisions can be replayed, and a denial identifies the violated rule.

Lumen converts 2D art, 3D models, and game-engine formats through MCP. Use it to work with game assets from an AI coding client.

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What Lumen does

Its MCP tools handle sprite operations, asset inspection, palettes, text, and style presets. Other capabilities include dream-animation automation, QA gates, and export targets such as PNG sheets, WASM-4, TIC-80, and VoidSprite. File paths stay within the project root.

Lumen builds named converter chains around code-first records that can produce 2D or 3D output. The same record yields the same result across platforms. Before a tool runs, its call is checked against lumen-policy.toml; policy decisions can be replayed. Live interop checks found mismatches between Lumen’s assumptions and real Aseprite and Bevy behavior, so those integrations need attention during setup.

What it helps with

convert sprites between formats
inspect project assets and palettes
export sprite sheets as PNG
automate dream-animation work
block tool calls that violate project policy

Example prompts for the agent

Inspect the project sprites and report any issues.
Create a palette for this set of images.
Export the sprites as PNG sheets.

How to install Lumen

Install

The MCP registry has no launch command for it: see the repository README

Step by step, with commands for each platform: How to add an MCP server to Claude Code, Codex, Cursor, VS Code, Gemini CLI and more

Questions about Lumen

How do I install Lumen in Claude Code?

Lumen is an MCP server listed for Claude Code. No Claude Code install command is provided.

What does Lumen do?

It offers MCP tools for working with and checking 2D and 3D assets, plus converting game-related formats.

How does Lumen enforce tool-call rules?

Each call is checked against lumen-policy.toml before execution. Decisions can be replayed, and a denial identifies the violated rule.

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