---
title: "Show HN: Fence – Jiminy Cricket for AI coding agents"
slug: "show-hn-fence-jiminy-cricket-for-ai-coding-agents"
date: 2026-07-07
category: community
tags: [anthropic, agents, open-source]
language: en
sources_count: 1
featured: false
publisher: AInauten News
url: https://news.ainauten.com/en/story/show-hn-fence-jiminy-cricket-for-ai-coding-agents
---

# Show HN: Fence – Jiminy Cricket for AI coding agents

**Published**: 2026-07-07 | **Category**: community | **Sources**: 1

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## TL;DR

- hoop.

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## Summary

- hoop.dev released Fence as the first of three internal side-project tools. The open-source project is meant to stop AI coding agents before they run destructive shell commands.
- Fence is already used with Claude Code and Codex. Cursor support is being held back until there is enough adoption and feedback.
- The pitch: Fence is not just a denylist. It tries to read command intent, including dangerous variants around rm -rf or sudo rm -rf $HOME.

---

## Why it matters

hoop.dev released Fence as the first of three internal side-project tools. The open-source project is meant to stop AI coding agents before they run destructive shell commands.

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## Key Points

- hoop.dev released Fence as the first of three internal side-project tools. The open-source project is meant to stop AI coding agents before they run destructive shell commands.
- Fence is already used with Claude Code and Codex. Cursor support is being held back until there is enough adoption and feedback.
- The pitch: Fence is not just a denylist. It tries to read command intent, including dangerous variants around rm -rf or sudo rm -rf $HOME.

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## Nauti's Take

Test Fence with intentionally dangerous commands in a throwaway repo before adding it to real agent workflows. The idea is useful, but the source base is still thin: it is unclear how well Fence handles obfuscated shell variants, aliases, scripts, and multi-step commands.

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## FAQ

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

**A:** - hoop.

**Q:** Why does it matter?

**A:** hoop.dev released Fence as the first of three internal side-project tools. The open-source project is meant to stop AI coding agents before they run destructive shell commands.

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

**A:** hoop.dev released Fence as the first of three internal side-project tools. The open-source project is meant to stop AI coding agents before they run destructive shell commands.. Fence is already used with Claude Code and Codex. Cursor support is being held back until there is enough adoption and feedback.. The pitch: Fence is not just a denylist. It tries to read command intent, including dangerous variants around rm -rf or sudo rm -rf $HOME.

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## Related Topics

- [anthropic](https://news.ainauten.com/en/tag/anthropic)
- [agents](https://news.ainauten.com/en/tag/agents)
- [open-source](https://news.ainauten.com/en/tag/open-source)

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## Sources

- [Show HN: Fence – Jiminy Cricket for AI coding agents](https://news.ycombinator.com/item?id=48821039) - 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: 2026-07-07*