How to Build a Private Component Registry From Your Codebase
Turn proven UI patterns from existing projects into a private, searchable component registry for developers and coding agents.
Most teams already have a component library. It is just spread across product repositories, named inconsistently, and difficult for a coding agent to search.
A private component registry creates a deliberate inventory of the patterns that have already survived real product work.
Start With Proven Components
Do not index every file in the first pass. Start with components that have been used in more than one feature or project:
application navigation
empty states
data tables
confirmation dialogs
file uploads
pricing sections
These categories map naturally to existing catalog patterns such as application tables, modals, and file uploaders.
Create a Small Manifest
Each registry item needs enough information for a person or agent to decide whether it is safe to reuse.
{
"name": "customer-table",
"title": "Customer table with row actions",
"sourcePath": "src/components/customer-table.tsx",
"useWhen": ["browsing a pageable customer list"],
"avoidWhen": ["showing a small summary of customer metrics"],
"dependencies": ["@tanstack/react-table"],
"related": ["filters", "pagination", "empty-states"]
}
The sourcePath makes the original implementation inspectable. The useWhen
and avoidWhen fields help an agent avoid treating every table-shaped request
as the same component.
Preserve Context, Not Just Files
Copying a component without its context often creates more work. Record the information that explains why the source works:
- expected data shape
- required tokens or styles
- accessibility behavior
- responsive rules
- dependencies and setup steps
For example, a responsive side menu is not only navigation markup. Its collapsed state, current-page indicator, and keyboard behavior are part of the reusable pattern.
Add Search Before Automation
The first useful registry does not need a complex installation system. A searchable manifest and a source preview are enough to validate that people and agents can find the right components.
query: "filterable customer table"
matches: customer-table, filters, pagination
Once the catalog is trustworthy, it can power a CLI, an API, or MCP tools. The important order is inventory first, automation second. A fast installation path cannot fix a registry full of unclear or outdated components.