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Ask HN: What's in Your Agents.md/Claude.md?

4•imasl42•4mo ago
I'm curious what the community is putting in their AGENTS.md and CLAUDE.md memory files for coding assistants.

What have you found most valuable to document?

Especially interested in:

- Project-specific gotchas you've discovered the hard way

- Rules that prevent common agent mistakes

- Context that significantly improves code quality

- Examples of what NOT to include

Would love to see real examples if you're willing to share.

Please use one instruction per comment. This way others can vote for instructions and put them to the top.

Comments

imasl42•4mo ago
I'll start:

Never commit directly to `main` - always use feature branches

codeclimber•4mo ago
Don't run "npm run dev" during development

(I'm running it myself in a separate terminal window, otherwise there is going to be too many dev servers running simultaneously)

1979: The Model World of Robert Symes [video]

https://www.youtube.com/watch?v=HmDxmxhrGDc
1•xqcgrek2•2m ago•0 comments

Satellites Have a Lot of Room

https://www.johndcook.com/blog/2026/02/02/satellites-have-a-lot-of-room/
1•y1n0•2m ago•0 comments

1980s Farm Crisis

https://en.wikipedia.org/wiki/1980s_farm_crisis
1•calebhwin•3m ago•1 comments

Show HN: FSID - Identifier for files and directories (like ISBN for Books)

https://github.com/skorotkiewicz/fsid
1•modinfo•8m ago•0 comments

Show HN: Holy Grail: Open-Source Autonomous Development Agent

https://github.com/dakotalock/holygrailopensource
1•Moriarty2026•15m ago•1 comments

Show HN: Minecraft Creeper meets 90s Tamagotchi

https://github.com/danielbrendel/krepagotchi-game
1•foxiel•22m ago•1 comments

Show HN: Termiteam – Control center for multiple AI agent terminals

https://github.com/NetanelBaruch/termiteam
1•Netanelbaruch•23m ago•0 comments

The only U.S. particle collider shuts down

https://www.sciencenews.org/article/particle-collider-shuts-down-brookhaven
1•rolph•25m ago•1 comments

Ask HN: Why do purchased B2B email lists still have such poor deliverability?

1•solarisos•26m ago•2 comments

Show HN: Remotion directory (videos and prompts)

https://www.remotion.directory/
1•rokbenko•28m ago•0 comments

Portable C Compiler

https://en.wikipedia.org/wiki/Portable_C_Compiler
2•guerrilla•30m ago•0 comments

Show HN: Kokki – A "Dual-Core" System Prompt to Reduce LLM Hallucinations

1•Ginsabo•30m ago•0 comments

Software Engineering Transformation 2026

https://mfranc.com/blog/ai-2026/
1•michal-franc•32m ago•0 comments

Microsoft purges Win11 printer drivers, devices on borrowed time

https://www.tomshardware.com/peripherals/printers/microsoft-stops-distrubitng-legacy-v3-and-v4-pr...
3•rolph•32m ago•1 comments

Lunch with the FT: Tarek Mansour

https://www.ft.com/content/a4cebf4c-c26c-48bb-82c8-5701d8256282
2•hhs•35m ago•0 comments

Old Mexico and her lost provinces (1883)

https://www.gutenberg.org/cache/epub/77881/pg77881-images.html
1•petethomas•39m ago•0 comments

'AI' is a dick move, redux

https://www.baldurbjarnason.com/notes/2026/note-on-debating-llm-fans/
4•cratermoon•40m ago•0 comments

The source code was the moat. But not anymore

https://philipotoole.com/the-source-code-was-the-moat-no-longer/
1•otoolep•40m ago•0 comments

Does anyone else feel like their inbox has become their job?

1•cfata•40m ago•1 comments

An AI model that can read and diagnose a brain MRI in seconds

https://www.michiganmedicine.org/health-lab/ai-model-can-read-and-diagnose-brain-mri-seconds
2•hhs•43m ago•0 comments

Dev with 5 of experience switched to Rails, what should I be careful about?

2•vampiregrey•46m ago•0 comments

AlphaFace: High Fidelity and Real-Time Face Swapper Robust to Facial Pose

https://arxiv.org/abs/2601.16429
1•PaulHoule•47m ago•0 comments

Scientists discover “levitating” time crystals that you can hold in your hand

https://www.nyu.edu/about/news-publications/news/2026/february/scientists-discover--levitating--t...
2•hhs•49m ago•0 comments

Rammstein – Deutschland (C64 Cover, Real SID, 8-bit – 2019) [video]

https://www.youtube.com/watch?v=3VReIuv1GFo
1•erickhill•49m ago•0 comments

Tell HN: Yet Another Round of Zendesk Spam

5•Philpax•49m ago•1 comments

Postgres Message Queue (PGMQ)

https://github.com/pgmq/pgmq
1•Lwrless•53m ago•0 comments

Show HN: Django-rclone: Database and media backups for Django, powered by rclone

https://github.com/kjnez/django-rclone
2•cui•56m ago•1 comments

NY lawmakers proposed statewide data center moratorium

https://www.niagara-gazette.com/news/local_news/ny-lawmakers-proposed-statewide-data-center-morat...
2•geox•57m ago•0 comments

OpenClaw AI chatbots are running amok – these scientists are listening in

https://www.nature.com/articles/d41586-026-00370-w
3•EA-3167•58m ago•0 comments

Show HN: AI agent forgets user preferences every session. This fixes it

https://www.pref0.com/
6•fliellerjulian•1h ago•0 comments