Why Your OpenAI JSON Calls Randomly Fail with "could not parse JSON body" (And How to Fix It)

``You're calling OpenAI from Node.js. 99% of requests work. Then randomly: BadRequestError: 400 could not parse JSON body Or: SyntaxError: Invalid JSON: EOF while parsing an object Or, if you're using tool calling: Invalid JSON in tool call arguments You check your code. Nothing changed. You retry manually — it works. You deploy again. It breaks... Weiterlesen