> ## 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.

# LogSpanGuardrailContent

> Span content type for safety and compliance checks.

# LogSpanGuardrailContent

Span content for safety and compliance checks. Use this type when logging guardrail operations — content moderation, PII detection, toxicity scoring, policy enforcement, or any validation that gates whether a response is safe to return.

## Import

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

## Type Definition

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

## Properties

* `type` - Discriminator field, always `'Guardrail'` for this content type
* `input` - The content being checked as a JSON string (`JSON.stringify()` of the input payload)
* `output` - The guardrail verdict as a JSON string (`JSON.stringify()` of the result)

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 checkSafety(text: string) {
  const res = await fetch('https://moderation.example/v1/classify', {
    method: 'POST',
    body: JSON.stringify({ text }),
  });
  return res.json();
}

const input = { text: userMessage, checks: ['toxicity', 'pii', 'jailbreak'] };
const result = await checkSafety(input.text);

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

***

## Related

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