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

# API Introduction

> Introduction to the Capital Check In API endpoints

# API Introduction

The Capital Check In API provides comprehensive endpoints for managing employee check-ins, authentication, user management, and more.

## Base URL

```
https://api.capitalcheckin.app/v1
```

## Authentication

All API endpoints require authentication using OAuth2 access tokens. Include your access token in the Authorization header:

```
Authorization: Bearer YOUR_ACCESS_TOKEN
```

## Content Type

All requests should use `application/json` as the Content-Type header.

## Response Format

All API responses are returned in JSON format with the following structure:

```json theme={null}
{
  "data": {
    // Response data
  },
  "meta": {
    // Metadata about the response
  }
}
```

## Available Endpoints

### Authentication

* `GET /oauth/authorize` - OAuth2 authorization
* `POST /oauth/token` - OAuth2 token exchange

### Users

* `GET /auth/user` - Get user profile

### Collaborators

* `POST /collaborators` - Create collaborator
* `GET /collaborators` - Get collaborators list
* `GET /collaborators/{id}` - Get collaborator by ID
* `PUT /collaborators/{id}` - Update collaborator
* `DELETE /collaborators/{id}` - Delete collaborator
* `POST /collaborators/bulk` - Add multiple collaborators
* `POST /collaborators/{id}/role` - Assign role
* `POST /collaborators/{id}/documents` - Upload document
* `GET /collaborators/{id}/documents` - Get collaborator documents
* `PUT /collaborators/{id}/photo` - Update profile photo
* `GET /collaborators/{id}/status` - Get collaborator status
* `GET /collaborators/{id}/history` - Get collaborator history
* `GET /collaborators/{id}/notifications` - Get notification preferences
* `PUT /collaborators/{id}/notifications` - Update notification preferences
* `POST /collaborators/{id}/resend-invitation` - Resend invitation
* `GET /collaborators/import-template` - Download import template
* `POST /collaborators/import` - Upload import template
* `GET /collaborators/export/individual` - Export by collaborator
* `GET /collaborators/export/group` - Export by group
* `GET /collaborators/export/list` - Export by list

## Rate Limiting

The API implements rate limiting to ensure fair usage. See the [Rate Limiting](/api-reference/ratelimiting) documentation for details.

## Error Handling

All errors follow a consistent format. See the [Errors](/api-reference/errors) documentation for details.