GONATURELLE for Anthropic

import os
import anthropic
from gonaturelle.integrations.anthropic import AnthropicToolLoop

from app.tools import TOOLS, call_tool  # TOOLS: list of {'name', 'description', 'input_schema'}

client = anthropic.Anthropic()
MODEL = os.environ['CLAIMS_AGENT_MODEL']

def run_agent(user_input: str) -> str:
    loop = AnthropicToolLoop(client, agent='fnol-intake')
    messages = [{'role': 'user', 'content': user_input}]
    for _ in range(8):
        response = loop.create(model=MODEL, max_tokens=1024, tools=TOOLS, messages=messages)
        messages.append({'role': 'assistant', 'content': response.content})
        if response.stop_reason != 'tool_use':
            return ''.join(b.text for b in response.content if b.type == 'text')
        results = []
        for block in response.content:
            if block.type == 'tool_use':
                ok, output = call_tool(block.name, block.input)
                results.append(loop.tool_result(block.id, output, is_error=not ok))
        messages.append({'role': 'user', 'content': results})
    raise RuntimeError('tool loop exceeded 8 turns')