> ## 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.

# Update Agent • AI Agent SDK

> update_agent: Update an existing managed agent's configuration.

# update\_agent

Method

> This is a method of the [**ManagedBackendProtocol**](https://praison.ai/docs/sdk/reference/praisonaiagents/classes/ManagedBackendProtocol.md) class in the [**protocols**](https://praison.ai/docs/sdk/reference/praisonaiagents/modules/protocols.md) module.

Update an existing managed agent's configuration.

Allows changing system prompt, tools, model, etc. on a previously
created agent without recreating it.

```mermaid theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
%%{init: {'theme': 'base', 'themeVariables': { 'primaryColor': '#8B0000', 'primaryTextColor': '#fff', 'primaryBorderColor': '#710101', 'lineColor': '#189AB4', 'secondaryColor': '#189AB4', 'tertiaryColor': '#fff' }}}%%

graph LR
    input["Input Data"] --> agent["Agent: update_agent"]
    agent --> output["Output Result"]
    style agent fill:#8B0000,color:#fff
    style input fill:#8B0000,color:#fff
    style output fill:#8B0000,color:#fff
```

## Signature

```python theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
def update_agent() -> None
```

## Source

> [card] [View on GitHub](https://github.com/MervinPraison/PraisonAI/blob/main/src/praisonai-agents/praisonaiagents/agent/protocols.py#L414)
>
> `praisonaiagents/agent/protocols.py` at line 414

***

## Related Documentation

> [card] [Agents Concept](https://praison.ai/docs/docs/concepts/agents)

> [card] [Single Agent Guide](https://praison.ai/docs/docs/guides/single-agent)

> [card] [Multi-Agent Guide](https://praison.ai/docs/docs/guides/multi-agent)

> [card] [Agent Configuration](https://praison.ai/docs/docs/configuration/agent-config)

> [card] [Auto Agents](https://praison.ai/docs/docs/features/autoagents)


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