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

# Validate Decision String • AI Agent SDK

> validate_decision_string: Convert legacy validation decision strings to typed RunStatus.

# validate\_decision\_string

<div className="flex items-center gap-2">
  <Badge color="teal">Function</Badge>
</div>

> This function is defined in the [**run\_outcome**](../modules/run_outcome) module.

Convert legacy validation decision strings to typed RunStatus.

Provides backward compatibility during migration from the legacy
VALIDATION\_FAILURE\_DECISIONS string list to typed outcomes.

## Signature

```python theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
def validate_decision_string(decision_str: str) -> RunStatus
```

## Parameters

<ParamField query="decision_str" type="str" required={true}>
  Legacy validation decision string (lowercased)
</ParamField>

### Returns

<ResponseField name="Returns" type="RunStatus">
  Corresponding RunStatus value
</ResponseField>

## Usage

```python theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
>>> validate_decision_string("success")
    "success"
    >>> validate_decision_string("invalid")  
    "invalid_output"
    >>> validate_decision_string("timeout")
    "timeout"
```

## Uses

* `TypeError`

## Source

<Card title="View on GitHub" icon="github" href="https://github.com/MervinPraison/PraisonAI/blob/main/src/praisonai-agents/praisonaiagents/run_outcome.py#L275">
  `praisonaiagents/run_outcome.py` at line 275
</Card>