# \# Bug: GLM-5 (Modal Research) — Agent tool calls return empty (no output, no error)

**URL:** <https://forum.cursor.com/t/bug-glm-5-modal-research-agent-tool-calls-return-empty-no-output-no-error/157099>\
**Category:** Bug Reports\
**Tags:** byok\
**Created:** [April 8, 2026, 11:48pm UTC](https://forum.cursor.com/t/bug-glm-5-modal-research-agent-tool-calls-return-empty-no-output-no-error/157099 "2026-04-08T23:48:48Z")\
**Posts on this page:** 1\
**Showing post:** 8

<div class="post-metadata">

**Author:** ![JonasH](https://avatars.discourse-cdn.com/v4/letter/j/2acd7d/32.png) [@JonasH](https://forum.cursor.com/u/JonasH)\
**Post date:** [April 10, 2026, 10:27pm UTC](https://forum.cursor.com/t/bug-glm-5-modal-research-agent-tool-calls-return-empty-no-output-no-error/157099/8 "2026-04-10T22:27:51Z")

</div>

Same here:  
Ubuntu 24.04.4, Cursor 3.0.16,

[https://api.us-west-2.modal.direct/v1/chat/completions](https://api.us-west-2.modal.direct/v1/chat/completions)

also:

[https://api.z.ai/api/coding/paas/v4](https://api.z.ai/api/coding/paas/v4)

Models: GLM-5-FP8 (modal.direct) , GLM-5 + GLM-5.1 (z.ai)  
Model GLM-5-TURBO seems to work correct at the moment.

---

_[View the full topic](https://forum.cursor.com/t/bug-glm-5-modal-research-agent-tool-calls-return-empty-no-output-no-error/157099)._