Module error 

Error Types

Error types for the Bob Agent Framework.

This module provides comprehensive error handling with:

• AgentError: Top-level error enum wrapping all error types
• LlmError: Errors from LLM providers
• ToolError: Errors from tool execution
• StoreError: Errors from session storage

Error Handling Strategy

All errors use thiserror for ergonomic error definitions and implement:

• std::error::Error for compatibility
• Display for user-friendly messages
• From for automatic conversion

Example

use bob_core::error::{AgentError, LlmError};

fn handle_error(err: AgentError) {
    match err {
        AgentError::Llm(e) => eprintln!("LLM error: {}", e),
        AgentError::Tool(e) => eprintln!("Tool error: {}", e),
        AgentError::Policy(msg) => eprintln!("Policy violation: {}", msg),
        AgentError::Timeout => eprintln!("Operation timed out"),
        _ => eprintln!("Other error: {}", err),
    }
}

Enums

AgentError

Top-level agent error.

CostError

Cost meter errors.

LlmError

LLM adapter errors.

StoreError

Session store errors.

ToolError

Tool execution errors.