---
title: "Ask HN: What is a good format for a tool to report data to a LLM?"
slug: "welches-format-eignet-sich-am-besten-um-daten-an-ein-llm-zu-liefern"
date: 2026-08-04
category: community
tags: []
language: en
sources_count: 1
featured: false
publisher: AInauten News
url: https://news.ainauten.com/en/story/welches-format-eignet-sich-am-besten-um-daten-an-ein-llm-zu-liefern
---

# Ask HN: What is a good format for a tool to report data to a LLM?

**Published**: 2026-08-04 | **Category**: community | **Sources**: 1

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## TL;DR

With CLI tools the picture is clear: humans want cleanly formatted text, sometimes with colors or a TUI, while machines prefer tab-separated tables or JSON.

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## Summary

With CLI tools the picture is clear: humans want cleanly formatted text, sometimes with colors or a TUI, while machines prefer tab-separated tables or JSON. For LLMs there is no comparable rule of thumb yet. A Hacker News thread asks exactly that question: which format helps a model grasp tabular or structured data quickly and reliably? The discussion is still small, but it hits a point familiar to anyone building tools for agents.

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## Why it matters

With CLI tools the picture is clear: humans want cleanly formatted text, sometimes with colors or a TUI, while machines prefer tab-separated tables or JSON.

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## Key Points

- With CLI tools the picture is clear: humans want cleanly formatted text, sometimes with colors or a TUI, while machines prefer tab-separated tables or JSON.
- For LLMs there is no comparable rule of thumb yet.
- A Hacker News thread asks exactly that question: which format helps a model grasp tabular or structured data quickly and reliably?
- The discussion is still small, but it hits a point familiar to anyone building tools for agents.

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## Nauti's Take

The question points at a real advantage: choosing a tool's output format deliberately cuts token cost and error rates in a measurable way. The catch is that solid benchmarking barely exists here, mostly gut feel from individual projects. Anyone building agents should test two formats against each other rather than trust a single forum recommendation.

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## FAQ

**Q:** What is Ask HN about?

**A:** With CLI tools the picture is clear: humans want cleanly formatted text, sometimes with colors or a TUI, while machines prefer tab-separated tables or JSON.

**Q:** Why does it matter?

**A:** With CLI tools the picture is clear: humans want cleanly formatted text, sometimes with colors or a TUI, while machines prefer tab-separated tables or JSON.

**Q:** What are the key takeaways?

**A:** With CLI tools the picture is clear: humans want cleanly formatted text, sometimes with colors or a TUI, while machines prefer tab-separated tables or JSON.. For LLMs there is no comparable rule of thumb yet.. A Hacker News thread asks exactly that question: which format helps a model grasp tabular or structured data quickly and reliably?

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## Related Topics

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## Sources

- [Ask HN: What is a good format for a tool to report data to a LLM?](https://news.ycombinator.com/item?id=49176440) - Hacker News AI

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## About This Article

This article is a synthesis of 1 sources, curated and summarized by AInauten News. We aggregate AI news from trusted sources and provide bilingual (German/English) coverage.

**Publisher**: [AInauten](https://www.ainauten.com) | **Site**: [news.ainauten.com](https://news.ainauten.com)

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*Last Updated: 2026-08-05*