Skip to content

AI Customer Support Agent with Tool Calling

A tool-calling support agent that resolves account, billing, and product questions end-to-end, escalating cleanly when confidence drops.

OpenAI APILangGraphFastAPITool Calling
Abstract charcoal and magenta cover illustration for the AI Customer Support Agent project, showing orchestrated tool nodes linked by fuchsia pathways.

Highlights

  • LangGraph state machine coordinating retrieval, tool use, and escalation.
  • Function-calling adapters for CRM, billing, and order-management APIs.
  • Full trace logging and evaluation harness for regression tests on real conversations.

Outcomes

  • Automated resolution of 45% of tier-1 support tickets with human-in-the-loop review.
  • Cut average handling time on escalated tickets by 30%.

Stack

  • OpenAI API
  • LangGraph
  • FastAPI
  • Redis
  • PostgreSQL