Coze's API calls, which clearly work on the web page, fail in Python, which is a common situation in the community. It's usually not "the web page is stronger", but the web side and the script side don't use exactly the same request method. Especially when you're dealing with streaming returns, SSE doesn't handle it well, and the result looks like "interface is broken".
Let's take a look at the most error-prone areas
The first is that the address is written incorrectly. The address '0.0.0.0' is only suitable for local listening, not as a client request address. The second is that the streaming response is not processed according to SSE, and the script is just waiting for normal JSON. Third, although the request fields look similar, the parameters 'bot_id', 'user_id', and 'additional_messages' are not exactly the same as the context on the page side.
Why can web pages run, but scripts cannot?
Web pages usually help you encapsulate authentication, conversations, streaming events, and follow-up messages. Python scripts require you to catch these processes yourself. Someone in the public issue has encountered this: everything looks normal on the web page, but the script side receives an SSE event stream, but because it is not parsed line by line, it finally thinks the interface has failed.
A more stable approach
- If you don't want to handle streaming events, set 'stream' to off first.
- If you want to use streaming, parse it line by line in the format of 'text/event-stream', and don't just use 'response.text' as the final answer.
- Request with a real IP or domain name first, and don't use '0.0.0.0' as the access address.
Also, the "follow-up suggestions" returned by the Python and web sides may be different. That's not an anomaly, it's a normal additional message in the conversation flow. Separate the main reply from the follow-up first, and the troubleshooting will be much clearer.
One sentence conclusion
When the Coze API page works but Python fails, it's usually not that the interface itself is broken, but that the address is written incorrectly, the SSE is not resolved, or the request context is not aligned. Align these three things, and the problem can generally be located.
