> ## Documentation Index
> Fetch the complete documentation index at: https://arka-agent-mintlify-f21cea86.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Ultra-fast development

> Multitask with priority-aware, edit-scoped verification.

Run independent development tasks concurrently:

```bash theme={null}
arka ultra_fast --iterations 3 \
  --task 'ui|arka "1"|arka "frontend_loop review app.png"|arka "src/components"|pytest tests/test_ui.py' \
  --task 'docs|arka "0"|arka "update_docs"|arka "docs"|arka "pytest tests/test_docs.py'"
```

Task format is `name|priority|build-command|edited-paths|test-command`.

* Priority `1`: run its test after every iteration in which one of its paths changed.
* Priority `0`: run its test only once after all iterations, and only if its paths changed.
* Unedited tasks are never tested.
* Priority mode is enabled by default; use `--no-priority` to disable it.
* Use `--auto-priority` when every task/prompt must be treated as priority `1`.

The scheduler reports every task, exit code, and whether it was edited. Keep
build commands independent and review generated changes before deployment.


## Related topics

- [Use every Arka skill through MCP](/guides/mcp-all-skills.md)
- [Sakana Fugu orchestrator](/guides/fugu.md)
- [How to code with Arka](/guides/code-with-arka.md)
- [Maximize free AI credits](/guides/free-credits.md)
- [Hardware-aware model selection](/guides/select-model.md)


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