Function calling transforms passive language models into active software actors. However, as tool catalogs expand beyond a dozen interfaces, models frequently experience parameter hallucinations, schema mismatches, and infinite retry loops. This engineering guide details production architectural patterns—including Grammar-Guided Generation and circuit breakers—to eliminate tool invocation failures.
Production Tool Use & Function Calling: Eliminating Schema Hallucinations and Multi-Turn State Drift
✦ Executive Research Brief · Hardware-Verified in Radar Lab ✦
A masterclass on building highly resilient tool-calling systems for autonomous agents. We analyze token-level schema steering, automated fallback retry circuits, and anti-deadlock safeguards across OpenAI, Anthropic, and open-source models.