AgentsAdvanced

Tool Error Cascade

Your agent depends on a weather API. When the API returns 500s, the agent retries 8 times, then crashes with an unhandled exception instead of answering with available information.

Symptoms

Agent fails on weather API 500s
Tool retries 8x then throws
Agent crashes instead of graceful degradation
User gets a 500 page

Evidence

Tool wrapper

def get_weather(city):
    return requests.get(f'{API}/{city}').json()  # no retry, no error handling

Agent loop

tool_result = tool.fn(**args)  # propagates exception
# no try/except around tool execution

Error log

ConnectionError at tool execution
500 Internal Server Error returned to user

Tasks

1Fix the tool wrapper
2Fix the agent loop's error handling
3Design graceful degradation

Your diagnosis