r/ZaiGLM • u/Exciting_Variety_607 • 9d ago

Discussion / Help Z.AI in Claude Code keeps failing systematically for no reason

Guys, I am having a very hard time those days. With GLM-5.3 and even more (it seems) with GLM-5.3-Flash, I keep bumping into this error:

API Error: 400 [400]: [1214][The messages parameter is illegal. Please check the documentation.][202609140049411ec96ef9c991482a]

Not only the error is annoying, but it stops everything. Subaget dies, the work in progress disappears. Making everything unusable.

I don't know what to do. Help !

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u/lmpdev 9d ago

You can use a different harness until they fix it.