LibreSprite-MCP

Prompt your way into LibreSprite

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

demo.mp4

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:

uvx libresprite-mcp

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:

  

Note

You will have to restart Claude Desktop to load the MCP Server.

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.

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