# Dataset without input (system only)

**URL:** <https://forum.langchain.com/t/dataset-without-input-system-only/1440>\
**Category:** Observability & Evals\
**Created:** [September 2, 2025, 8:45pm UTC](https://forum.langchain.com/t/dataset-without-input-system-only/1440 "2025-09-02T20:45:32Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![sicktastic](https://yyz1.discourse-cdn.com/flex007/user_avatar/forum.langchain.com/sicktastic/32/148_2.png) [@sicktastic](https://forum.langchain.com/u/sicktastic)\
**Post date:** [September 2, 2025, 8:45pm UTC](https://forum.langchain.com/t/dataset-without-input-system-only/1440/1 "2025-09-02T20:45:32Z")

</div>

I have system-generated traces that don’t include any user input. I’d still like to build a golden dataset from these outputs, but I can’t add them since there are no input values. How can I create datasets that let me run evaluations and experiments using the prompt template and its outputs from system-only instructions?

 ![CleanShot 2025-09-02 at 15.41.16](https://canada1.discourse-cdn.com/flex007/uploads/langchain/original/1X/227b77ac14ededa5a3a255ab370fe016fcf4a883.png)