> ## 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.

# Fallback Runtime • AI Agent SDK

> FallbackRuntime: Fallback runtime implementation that raises errors instead of returning stubs.

# FallbackRuntime

> Defined in the [**resolve**](../modules/resolve) module.

<Badge color="blue">AI Agent</Badge>

Fallback runtime implementation that raises errors instead of returning stubs.

## Constructor

<ParamField query="model_ref" type="str" required={true}>
  No description available.
</ParamField>

<ParamField query="agent_id" type="str" required={true}>
  No description available.
</ParamField>

## Methods

<CardGroup cols={2}>
  <Card title="execute()" icon="function" href="../functions/FallbackRuntime-execute">
    Instance method.
  </Card>

  <Card title="aexecute()" icon="function" href="../functions/FallbackRuntime-aexecute">
    Instance method.
  </Card>

  <Card title="model_ref()" icon="function" href="../functions/FallbackRuntime-model_ref">
    Instance method.
  </Card>

  <Card title="provider()" icon="function" href="../functions/FallbackRuntime-provider">
    Instance method.
  </Card>

  <Card title="supports_streaming()" icon="function" href="../functions/FallbackRuntime-supports_streaming">
    Instance method.
  </Card>

  <Card title="supports_tools()" icon="function" href="../functions/FallbackRuntime-supports_tools">
    Instance method.
  </Card>
</CardGroup>

## Source

<Card title="View on GitHub" icon="github" href="https://github.com/MervinPraison/PraisonAI/blob/main/src/praisonai-agents/praisonaiagents/runtime/resolve.py#L179">
  `praisonaiagents/runtime/resolve.py` at line 179
</Card>