> ## Documentation Index
> Fetch the complete documentation index at: https://docs.comfy.org/llms.txt
> Use this file to discover all available pages before exploring further.

# API Overview

## Overview

The Custom Node Registry follows this structure:

```mermaid theme={null}
erDiagram
    PUBLISHER {
        string id PK
    }

    USER {
        string id PK
        string name
        string publisher_id FK
    }

    CUSTOM_NODE {
        string id PK
        string name
        string publisher_id FK
    }

    NODE_VERSION {
        string id PK
        string version
        string node_id FK
    }

    PUBLISHER ||--o{ USER: "has many"
    PUBLISHER ||--o{ CUSTOM_NODE: "has many"
    CUSTOM_NODE ||--o{ NODE_VERSION: "has many"
```

## Commonly Used APIs

* **List All Nodes** [API](/registry/api-reference/nodes/retrieves-a-list-of-nodes)
* **Install a Node** [API](/registry/api-reference/nodes/returns-a-node-version-to-be-installed)