cd /news/artificial-intelligence/ask-hn-how-to-rewrite-claude-md-and-… · home › topics › artificial-intelligence › article
[ARTICLE · art-76513] src=news.ycombinator.com ↗ pub= topic=artificial-intelligence verified=true sentiment=· neutral

Ask HN: How to rewrite `Claude.md` and install the skill for Opus5 and Fable5

Anthropic has released the new Opus 5 and Fable 5 models, rendering existing resources like `claude.md` files and custom skills incompatible. Users are seeking guidance on how to rewrite or adjust these resources for the new models.

read1 min views32 publishedJul 28, 2026

| ||||||||||||||||| 1 point by | Anthropic has released the new Opus 5 and Fable 5 models. Many existing resources—such as claude.md files and custom skills—are no longer compatible with these new models. How should one rewrite or adjust claude.md, or develop skills better suited to these models? | |||||||||||||||| Applications are open till July 27. |

source & further reading
news.ycombinator.com — original article Ask HN: How are much smarter AI models made? Ask HN: Is GPT-6 Astra worth the 2.5x cost increase over GPT-5.6 Sol? Ask HN: How realistic is a modern-day era NLU
── more in #artificial-intelligence 4 stories · sorted by recency
── more on @anthropic 3 stories trending now
sponsored brought to you by zahid.host 4,200+ EU-deployed projects
reading about agents? ship yours in a single git push.

Run your AI side-project on zahid.host

EU-based hosting, git-push deploys, automatic HTTPS, no cold starts. Free tier with a custom domain — perfect for shipping the agent you just read about.

$git push zahid main
→ Live at https://your-agent.zahid.host ✓
Get free account → Pricing
from €0/mo · no card required
LIVE [news/ask-hn-how-to-rewrit…] indexed:0 read:1min 2026-07-28 · —