Question

Your application defines a `get_weather` tool. Claude requests it, and your backend function returns a Python dictionary: `{'temp_c': 18, 'conditions': 'cloudy'}`. When you send this back to Claude in the follow-up API request, how should the tool's output be placed in the tool_result content block?

Accepted Answer

Serialize the dictionary to a string (e.g., JSON text) and put it in the tool_result content field, since content must be text or a supported block type.

Answer

Send the raw Python dictionary object directly as the content value; the API accepts native language objects.

Answer

Wrap the dictionary in a new tool_use block and send it in the assistant role.

Answer

Add the dictionary to the system prompt so Claude can read the weather data before the next turn.