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

# Capabilities

> Capabilities determine what your agent can do. Enable them per-project, then optionally filter per-request.

## Available Capabilities

| Capability | Value       | Free | Paid | Description                                   |
| :--------- | :---------- | :--: | :--: | :-------------------------------------------- |
| Chat       | `chat`      |  Yes |  Yes | Conversational AI with memory and context     |
| Research   | `research`  |   —  |  Yes | Web search, page scraping, and synthesis      |
| Documents  | `documents` |   —  |  Yes | Generate PDFs, spreadsheets, presentations    |
| Code       | `code`      |   —  |  Yes | Write and execute code in a sandbox           |
| Data       | `data`      |  Yes |  Yes | Parse, analyze, and transform structured data |
| Files      | `files`     |   —  |  Yes | Read and process uploaded files               |

<Info>
  Free-tier projects are limited to **chat** and **data** capabilities. [Upgrade your plan](https://stewrd.dev/pricing) to unlock all capabilities.
</Info>

## Per-Request Filtering

Pass a `capabilities` array to restrict which capabilities the agent can use for a single request. Omitting the array uses all capabilities enabled on the project.

```typescript theme={null}
// Only allow research + documents for this request
const body = {
  message: 'Create a market report on EV adoption',
  capabilities: ['research', 'documents'],
}
```

This is useful when you want to:

* Ensure the agent only uses specific tools for a given task
* Reduce latency by limiting the tool selection
* Control costs by restricting expensive capabilities

<Warning>
  Requested capabilities must be **enabled on your project** first. Requesting a capability that isn't enabled returns a `capability_not_enabled` error.
</Warning>

## Enabling Capabilities

1. Go to your [dashboard](https://stewrd.dev/dashboard)
2. Select your project
3. Toggle capabilities on/off in project settings

Changes take effect immediately for all future requests.