Rebrickable LEGO MCP. Get full parts inventories for any set in seconds.

This MCP Server hooks up your AI agent directly to the whole Rebrickable catalog data. You don't gotta mess around opening a dozen tabs; your agent handles complex LEGO queries just by chatting with it. It treats every set, every brick, and every character like structured data you can actually use.

You want to build a massive custom model (MOC)? You can check the full parts inventory for any specific set number using get_set_parts, which lists every required piece along with quantities, and it even flags spare pieces so you know what's left over. If you need to plan out a MOC, you can use get_part_colors on any given part number to list all the color IDs and names that brick is manufactured in.

Need to find a specific minifigure? You can run list_minifigs to search for characters by name or theme, getting back their numbers, years, and image URLs. If you already know the figure's ID, get_minifig pulls all its details: the theme, year, and piece count associated with that single character.

When you’re deep into catalog research, you can use list_parts to search the entire parts database using patterns or keywords, getting back names, categories, and images for anything you throw at it. You also can pinpoint a specific part number using get_part, which retrieves its name, category, and available colors right away.

To plan big builds, list_sets lets you search for entire sets by filtering based on theme ID, year, or even a required part number, giving you the set numbers and total piece counts. For any given set number, get_set provides all its specs: the theme, the overall piece count, and how many minifigures it includes.

For mapping out big LEGO eras, your agent can use list_themes to list every major LEGO theme and sub-theme, showing you their parent/child relationship and exactly how many sets belong in each category. If you want details on a specific theme's structure, get_theme returns that info for one particular ID.

To manage color data across the board, list_colors provides a master list of every official LEGO color in the catalog, giving you their IDs and RGB values. When you need to pull details for an entire set, use get_set to get its theme, piece count, and minifig count.

It's all about data retrieval: you can search the full parts catalog with list_parts, or narrow your focus by checking a specific part number using get_part. You’ll find that list_themes details every major LEGO category, showing its hierarchy (parent/child) and associated set count. Your agent doesn't just check one thing; it can look up the complete parts inventory for any given set number, including required quantities and identifying spare pieces.