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

# LogSpanOtherContent

> Span content type for any custom operation that doesn't fit the predefined categories.

# LogSpanOtherContent

Catch-all span content for any operation that doesn't fit the predefined categories. Use this type when you need to log a step that isn't an LLM call, embedding, tool execution, retrieval, guardrail, or custom function — for example, cache lookups, external API calls, queue operations, or any other custom workflow step.

## Import

```typescript theme={null}
import type { LogSpanOtherContent } from '@adaline/api';
import { LogSpanOtherContentTypeEnum } from '@adaline/api';
```

## Type Definition

```typescript theme={null}
interface LogSpanOtherContent {
  type: 'Other';
  input: string;                   // JSON string (must be valid JSON)
  output: string;                  // JSON string (must be valid JSON)
}
```

## Properties

* `type` - Discriminator field, always `'Other'` for this content type
* `input` - The operation input as a JSON string (`JSON.stringify()` of the input data)
* `output` - The operation result as a JSON string (`JSON.stringify()` of the output data)

Both `input` and `output` must be valid, parseable JSON strings (the result of `JSON.stringify()`). Passing a plain string that isn't valid JSON will cause the span to be rejected.

***

## Example

```typescript theme={null}
async function checkCache(key: string) {
  const cached = await redis.get(key);
  return cached ? { hit: true, value: JSON.parse(cached) } : { hit: false };
}

const input = { key: 'user:123:preferences', store: 'redis' };
const result = await checkCache(input.key);

span.update({
  content: {
    type: 'Other',
    input: JSON.stringify(input),
    output: JSON.stringify(result),
  },
});
```

***

## Related

* [LogSpanContent](/docs/reference/sdk/v2/typescript/types/LogSpanContent) — union type that includes `LogSpanOtherContent`
* [Span](/docs/reference/sdk/v2/typescript/classes/span) — class that accepts `LogSpanContent` via `span.update()`