# Retro Diffusion Pixel Art

Connects AI assistants to an authentic pixel art engine that outputs grid-aligned sprites, animations, and tilesets. Useful for game developers prototyping visual assets inside their IDE.

- MCP server · `type=mcp` · Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed, Gemini CLI · ★ 7
- Author: Retro-Diffusion
- License: MIT · policy=link-only · description only; the file stays with the author
- Source: https://github.com/Retro-Diffusion/retro-diffusion-mcp
- Updated: 2026-09-02
- HTML: https://affpapa.org/en/nevibecode/mcp/retro-diffusion-pixel-art

## What it does

This remote service operates over Streamable HTTP at `https://mcp.retrodiffusion.ai/mcp`. No local process is required. To send requests, provide an API key beginning with `rdpk-` in the authorization header. Pricing works on a pay-per-generation basis from prepaid credits. Checking prices with `estimate_inference_cost` is free.

The server exposes RD Fast, RD Plus, RD Pro, and RD Mini models alongside 90+ style presets. It outputs static sprites and animated sheets. Built-in edit tools handle background clearing and palette conversions. The `fix_pixel_art` utility cleans up blurry or scaled pixel graphics at zero credit cost.

Image jobs are non-idempotent and charge your account immediately. If a network call drops or times out, never restart the process blindly. Instead, pass the initial `request_id` into `get_inference_result` to recover signed output URLs without paying twice.

## Requirements
- Remote server: `https://mcp.retrodiffusion.ai/mcp`

## Install

### Claude Code (native platform)

**Platform CLI: remote server**
```bash
claude mcp add --transport http retro-diffusion-pixel-art https://mcp.retrodiffusion.ai/mcp
```

### Codex

**Platform CLI: remote server**
```bash
codex mcp add retro-diffusion-pixel-art --url https://mcp.retrodiffusion.ai/mcp
```

### Cursor

**Config file**
File `.cursor/mcp.json`:
```json
{
    "mcpServers": {
        "retro-diffusion-pixel-art": {
            "url": "https://mcp.retrodiffusion.ai/mcp"
        }
    }
}
```

### GitHub Copilot

**Config file**
File `.vscode/mcp.json`:
```json
{
    "servers": {
        "retro-diffusion-pixel-art": {
            "type": "http",
            "url": "https://mcp.retrodiffusion.ai/mcp"
        }
    }
}
```

### Gemini CLI

**Platform CLI: remote server**
```bash
gemini mcp add -t http retro-diffusion-pixel-art https://mcp.retrodiffusion.ai/mcp
```

## When to use it
- Generate sprite sheets and animations with transparent backgrounds
- Construct repeating tilesets for 2D level design
- Restore native pixel grids on blurry or resized images
- Convert graphics to match specific project color palettes
- Calculate generation costs prior to spending prepaid balance

## Example prompts
- Estimate the cost of making a walk cycle animation with RD Pro before running it.
- Generate a 32x32 knight idle animation with a transparent background using create_inference.
- Clean up the blurry grid on this uploaded sprite using fix_pixel_art.

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