AI Agent Tool Description Engineering 2026

The Agent picked the wrong tool—not because the Agent is dumb, but because the tool description wasn't written well. Change one line of the description, and the tool selection accuracy jumps from 60% to 95%.

💡 What You Will Learn

The Agent picked the wrong tool—not because the Agent is dumb, but because the tool description wasn't written well. Change one line of the description, and the tool selection accuracy jumps from 60%

📜 Table of Contents

• Results
• Summary

❌ def search_database(query):
    \'\'\'\'\'\'

✅ def search_database(query):
    \'\'\'

    search_productscheck_price
    querySQL
    '''

Results

Summary

def search_products(query): 

def search_products(query):
    """

    search_orderscheck_stock
    query

    """