# untracked

`untracked(read)` invokes a synchronous callback and returns its result without
recording signal dependencies for the current consumer. It does not disable
component, primitive-render, computed, or scheduler write guards.

Related type: [`Signal`](/reference/types/canvas-runtime/#signal).

## API details from source

<span id="api-untracked"></span>

Runs a callback without recording its signal reads as dependencies of the current consumer.

```ts
untracked: <T>(callback: () => T) => T
```

Related API: [untracked](/reference/functions/untracked/).

### Parameters

- **`callback`** — Synchronous work whose reads should not register dependencies.

### Returns

The callback's return value.

### See also

[Signal](/reference/types/canvas-runtime/#signal)

[computed](/reference/functions/computed/)

[View source — packages/core/src/lib/signals/graph.ts:1129](/source/packages/core/src/lib/signals/graph-ts/#L1129)

## Implementation guidance for agents

Read the [Authoring, signals, and lifecycle companion](/agents/topics/lifecycle/) for ownership, adaptation, failure modes, and verification. [Agent start](/agents/) provides the version-selection workflow.

## Complete minimal examples

- [Read and update signals](/minimal-examples/lifecycle/signals/): Use writable, readonly, and computed values with synchronous batching. [Plain source](/minimal/lifecycle/signals.ts)
## Documentation version

Documentation built with @pibbl/core 0.0.2, revision 272a94a. ALPHA — NOT FOR PRODUCTION USE.