The agent calls search_web when it should query the database

• Asked "how many open orders does customer 4821 have?", the agent calls search_web and returns a vague guess.
• The query_database tool would answer exactly, but the agent rarely picks it.
• The same agent uses query_database correctly when the user literally says "query the database."

tools available:
  - search_web:    "Search for information to answer questions."
  - query_database: "Query the internal database for information."
user: "how many open orders does customer 4821 have?"
chosen tool: search_web  args={"q":"customer 4821 open orders"}