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

# Fill API Reference

> Shift Filling API endpoints

The Fill API provides endpoints to solve and manage employee shift scheduling optimization problems.

## Available Operations

### Optimization

* **[Solve](/api-reference/fill/solve)** - Find optimal shift assignments for employees

### Results

* **[Status](/api-reference/fill/status)** - Check the status of a running optimization job
* **[Solution](/api-reference/fill/solution)** - Retrieve the optimized solution
* **[Explanation](/api-reference/fill/explanation)** - Get detailed insights into the solution

## Authentication

All endpoints require authentication via API key in the `Authorization` header:

```bash theme={null}
Authorization: YOUR_API_KEY
```

## Base URL

```
https://api.solvice.io/v2/fill
```

## OpenAPI Specification

<Card title="Download OpenAPI Spec" icon="download" href="/api-reference/fill.yaml">
  Download the Fill API OpenAPI specification (YAML)
</Card>