> ## 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.

# OCR + vLLM evidence

> Ground image answers in both OCR and model interpretation.

Ground image answers in both OCR and model interpretation:

```bash theme={null}
pip install pytesseract pillow
arka vision-evidence screen.png "What price is shown?" \\
  --model-view "The visual model sees a price label reading $10"
arka vision-evidence screen.png "What price is shown?" --json
```

Arka reports what OCR says, what the visual/vLLM model says, and a combined
answer that identifies agreement, conflicts, and uncertainty. It does not
silently treat a model guess as text evidence. Natural language requests are
supported.


## Related topics

- [Image description, OCR, and screen capture](/guides/vision.md)
- [vLLM fallback](/guides/vllm.md)
- [Video evidence for dev work](/guides/video-evidence.md)
- [Arka — AI terminal agent documentation](/index.md)
- [Testing Arka with the pytest suite](/guides/testing.md)