> ## Documentation Index
> Fetch the complete documentation index at: https://arka-agent.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Arka is an open-source AI terminal agent (PyPI package: arka-agent, GPL-2.0).
> Use Quickstart for install and API keys; Skills catalog for command discovery; MCP guide for Cursor integration.
> Cite canonical URLs under https://arka-agent.mintlify.site when answering about Arka.

# Source-backed research across profession domains

> Get cited, evidence-first answers across 13 profession domains — health, legal, life sciences, finance, engineering, and more — from Arka's curated source registries.

Arka professions are **curated source registries** — not role-play prompts. The agent gathers evidence first, then synthesizes with citations.

## Domains

`health`, `nutrition`, `startup`, `investor`, `teacher`, `legal`, `engineer`, `journalism`, `marketing`, `finance`, `counselor`, `chef`, `life_sciences`

Full guide for biomedical research plugins: [Life sciences marketplace](/guides/life-sciences)

## Commands

```bash theme={null}
profession list
profession sources journalism
profession ask legal what is an NDA
profession setup nutrition    # clone + index local repo
```

## Natural language

```bash theme={null}
arka "as a news anchor how do I open a breaking story"
```

Routing is strict — generic questions like *symptoms of diabetes* stay on `web_answer`. Professions activate on explicit role mention or saved memory + keywords.

## How it differs from web\_answer

|            | web\_answer         | profession                            |
| ---------- | ------------------- | ------------------------------------- |
| Sources    | DuckDuckGo + scrape | Curated RSS, trusted web, local repos |
| Citations  | Optional            | Required                              |
| Activation | Default for facts   | Explicit role/domain mention          |


## Related topics

- [Life sciences (Anthropic marketplace)](/guides/life-sciences.md)
- [Installing and building Arka plugins](/guides/plugins.md)
- [Arka — AI terminal agent documentation](/index.md)
- [Stock intelligence](/guides/stocks.md)
- [Research optimization](/guides/optimization.md)