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

# Execution Config

> Override timeout and max attempts per operation — LLM, tools, and sub-agents.

Shows how to use `With*ExecutionConfig` options to give each agent loop operation its own timeout and max attempts instead of relying on the SDK defaults.

Source: [`examples/agent_with_execution_config/`](https://github.com/agenticenv/agent-sdk-go/tree/main/examples/agent_with_execution_config)

## What it demonstrates

* `WithLLMExecutionConfig` — tighter LLM timeout, up to 3 attempts
* `WithToolExecutionConfig` — short tool deadline, single attempt
* `WithSubAgentExecutionConfig` — explicit sub-agent ceiling of agent run timeout
* Zero fields fall back to SDK defaults — only set what you want to change

## Run

From `examples/`:

```bash theme={null}
go run ./agent_with_execution_config
go run ./agent_with_execution_config "What is 99 times 77?"
AGENT_RUNTIME=temporal go run ./agent_with_execution_config
```

## Key code

```go theme={null}
a, err := agent.NewAgent(
    agent.WithName("exec-config-agent"),
    agent.WithLLMClient(llmClient),
    agent.WithTools(calculator.New(), currenttime.New()),
    agent.WithToolApprovalPolicy(agent.AutoToolApprovalPolicy()),

    // LLM: tighter timeout for a chat agent; up to 3 attempts for transient errors.
    agent.WithLLMExecutionConfig(agent.ExecutionConfig{
        Timeout:     10 * time.Minute,
        MaxAttempts: 3,
    }),

    // ToolExecute: fast tools — short deadline, one attempt.
    agent.WithToolExecutionConfig(agent.ExecutionConfig{
        Timeout:     2 * time.Minute,
        MaxAttempts: 1,
    }),

    // SubAgent: explicit ceiling — delegates must finish within 5 minutes.
    agent.WithSubAgentExecutionConfig(agent.ExecutionConfig{
        Timeout: 5 * time.Minute,
    }),
)
```

## Expected output

```
user: What is 123 multiplied by 456? Also, what time is it right now?

assistant: 123 × 456 = 56,088. The current time is 14:32 UTC.
```

## Learn more

<CardGroup cols={2}>
  <Card title="Execution Config" icon="sliders" href="/features/execution-config" horizontal>
    Full feature docs — defaults table, retry backoff, runtime behavior
  </Card>

  <Card title="Timeouts & Modes" icon="clock" href="/advanced/timeouts-and-modes" horizontal>
    Agent run timeout, approval timeout, and agent modes
  </Card>
</CardGroup>