How to Implement Semantic Routing for AI Agents to Select API Endpoints

You are building a multi-agent system. The reasoning engine works perfectly in your local prototype. Your agent correctly identifies the user’s intent, chains function calls, reasons through multi-step workflows, formats the required JSON arguments, and triggers the function call perfectly. Then you deploy it to a customer’s production environment, where your agent needs to act inside Salesforce, Jira, Workday, and 30 other SaaS systems.