You have configured your Assistant, defined your function schemas, and initiated a run. The Assistant correctly identifies the intent and decides to call a function. However, the process never completes. The Run status hangs indefinitely in requires_action , and the final response is never generated. This "zombie run" scenario is the single most common friction point in the OpenAI Assistants API. It typically occurs not because of an API outage, but due to a misalignment between the API's state machine and the developer's asynchronous logic flow. This guide provides a root cause analysis of the requires_action stall and a robust, production-ready implementation in Node.js to resolve it. The Root Cause: The Run Lifecycle and State Locking To fix the stall, you must understand the "lock" mechanism of the Assistants API. The Run object is a state machine. In Progress: The model is reasoning. Requires Action: The model determines it needs external data ...
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