app.py

from smolagents import tool 
import requests 
import pandas as pd 
import Gradio_UI

# @tool 
# def my_custom_tool(arg1: str, arg2: int) -> str: 
#    """A placeholder tool that simply echoes its inputs. 
#    Args: 
#        arg1: The first argument. 
#        arg2: The second argument. 
#    Returns: 
#        A short status string. 
#    """ 
#    return f"arg1={arg1}, arg2={arg2}"

@tool
def get_crypto_prices(crypto_ids: list[str], currency: str = "usd") -> dict:
    """Get current crypto prices using CoinGecko Simple Price.
    Args:
        crypto_ids: List of CoinGecko coin IDs, e.g. ["bitcoin","ethereum","ripple"].
        currency: Fiat currency code, e.g. "usd".
    Returns:
        Dict mapping coin_id -> price in the requested currency.
    """
    if not crypto_ids:
        return {"error": "crypto_ids must be a non-empty list"}

    url = "https://api.coingecko.com/api/v3/simple/price"
    params = {"ids": ",".join(crypto_ids), "vs_currencies": currency.lower()}

    try:
        r = requests.get(url, params=params, timeout=10)
        r.raise_for_status()
    except Exception as e:
        return {"error": f"request failed: {e}"}

    data = r.json() # shape: {"bitcoin":{"usd":12345.6}, ...}
    # flatten to { "bitcoin": 12345.6, ... }
    return {coin: payload.get(currency.lower()) for coin, payload in data.items()}

# Example usage outside the agent:
cryptos = ["bitcoin", "ethereum", "ripple", "tether", "bnb", "solana", "cardano", "tron", "chainlink"]
prices = get_crypto_prices(cryptos, currency="usd")
print(prices)

# Optional: nice tabular view for humans
df = pd.DataFrame.from_dict(prices, orient="index", columns=["usd"])
print(df)