> ## Documentation Index > Fetch the complete documentation index at: https://docs.pcb.new/llms.txt > Use this file to discover all available pages before exploring further. # Registry > Use the web-based registry app to browse, inspect, and work on reusable PCB packages # Registry App The [Registry app](https://registry.diode.computer) is the web interface for managing your part library. Use it when you want to browse the available parts and schematic modules, or when you want to build new ones. ## Browsing the Registry The **Parts** section of the registry shows the contents of the registry. Registry sidebar showing the Diode registry with Components and Modules under Parts The Parts section has two views: Components and Modules. Use Components when you are looking for a physical part. Use Modules when you are looking for a reusable circuit block. Use the table headers to sort by preferred status, name, description, version, footprint, manufacturer, or recency where those fields apply. ### Components Components are physical parts. A component page can show the part symbol, footprint, 3D model, manufacturer metadata, MPN, package image, and sourcing details. This is the view to use before copying a component into a board or adding it as a dependency. Registry component view showing symbol, footprint, 3D model, and part metadata ### Modules Modules are reusable circuits built from components and other modules. A module page focuses on the schematic entrypoint and the package relationships that explain what the module includes. Registry module view showing a reusable RP2350A schematic module and included components ## Search Use the search launcher at the top of the catalog to search for parts. You can search by part number or free-form description. For a more interactive search experience, press the chat button at the top right to ask an agent about available parts. ## Inspect Packages Select a package to open the package viewer. The viewer prepares a read-only sandbox for the selected package and renders the package entrypoint when one is available. The package sidebar includes registry metadata and package relationships: * **Includes**: packages this package depends on. * **Used by**: packages that depend on this package. Those relationship links are useful for understanding the blast radius of a component or module change before editing it. ## Adding Packages To add or update components in your library, use a sandbox. A sandbox is a branch of your component library that you can iterate on with an agent before merging your changes in. To create a sandbox, press the "+" button next to "Sandboxes" in the left bar. Then, just ask the agent for what you would like to do. Here's a few ideas to get you started: 1. Help me find and add a buck converter for a 24 V input, 5 V output, and at least 2 A load current. 2. Let's add `TPSM86638RCGR` to the registry. 3. Rearrange the `TCAN3403DRQ1` symbol into multiple units so the CAN bus pins, logic pins, and power pins can be placed separately.