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

# Loop

> Runtime, automation agents, automation level, and budgets for the self-improvement loop.

**Settings → Loop** configures the self-improvement loop: where it runs, which of its agents are on, how far automation goes, and how much it may spend.

## Runtime

* **Cloud**: the loop runs on Nora's infrastructure.
* **On-premises**: the loop's own model calls route to an endpoint you registered under [Internal resources](/settings/engine/internal-resources).

## Automation agents

Toggle each of the loop's agents individually:

* **Verification**: verifies runs automatically.
* **Failure detection**: detects failing patterns and raises signals.
* **Improvement agent**: proposes fixes for confirmed problems.
* **Evaluation agent**: scores candidates against your [evaluation criteria](/settings/engine/evaluation).

**Verification lenses** holds the **Causal check (auto)** toggle. Once on, it runs automatically.

## Autonomy level

How much the loop does without a human in the loop. **Level 3** and **Level 4** are selectable today; **Level 4.5** and **Level 5** are marked upcoming. Higher levels hand more of the detect → propose → validate cycle to the loop.

## Budgets

* **Max spend per run**: a single loop run stops at this spend (default \$10).

**Simulation & optimization** budgets bound sweep work:

* **Sweep budget**: total spend per sweep (default \$10).
* **Timeout**: per sweep (default 10 minutes).
* **Cases per candidate**: how many dataset cases each candidate is evaluated on (default 6).

## Related

<CardGroup cols={2}>
  <Card title="Optimization" icon="wand-magic-sparkles" href="/reliable/optimization/overview">
    What the loop's proposals look like.
  </Card>

  <Card title="Simulation" icon="flask" href="/reliable/simulation/overview">
    The sweeps these budgets bound.
  </Card>

  <Card title="Usage" icon="gauge" href="/settings/billing/usage">
    Loop model tokens are metered on the verify & improve axis.
  </Card>
</CardGroup>