LibreSprite MCP

LibreSprite-MCP

Prompt your way into LibreSprite

Model Context Protocol (MCP) server for prompt-assisted editing, designing, and scripting inside LibreSprite.

https://github.com/user-attachments/assets/71440bba-16a5-4ee2-af10-2c346978a290

Prerequisites

uv is the recommended way to install and use this server. Here are quick one-liners to install it if you haven't:

• Windows: (run as administrator)
  powershell -ExecutionPolicy ByPass -c "irm https://astral.sh/uv/install.ps1 | iex"
• Unix:
  curl -LsSf https://astral.sh/uv/install.sh | sh

More on installing uv.

The package is published on PyPI, so feel free to consume it any other way you prefer (pipx, etc)

Usage

Step 1: Setting up the client

Add the MCP server with the following entrypoint command (or something else if you are not using uv) to your MCP client:

Examples:

• Claude Desktop & Cursor Edit Claude > Settings > Developer > Edit Config > claude_desktop_config.json or .cursor > mcp.json to include the server:
  { "mcpServers": { // ...existing servers... "libresprite": { "type": "stdio", "command": "uvx", "args": [ "libresprite-mcp" ] } // ...existing servers... } }
  You can also use this fancy badge to make it quick:

Step 2: Setting up LibreSprite

Download the latest stable remote script mcp.js from releases and add it to LibreSprite's scripts folder:

Step 3: Connect and use

Run the mcp.js script (that you see in the screenshot above), and make sure your MCP server is running (Claude Desktop/Cursor is loaded and running). If all went well, you should see the following screen:

Click the "Connect" button and you can now start talking to Claude about your next big pixel-art project!

Some pointers

• You can only run one instance of the MCP server at a time.
• The server expects port 64823 to be free.
• The server has a hacky and brittle implementation (see ARCHITECTURE), and is not extensively tested.
• The MCP resources are kinda low quality with unclear API reference and limited examples, leaving the LLM confused at times. If you're a LibreSprite expert, we need your help.