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Claude.md file is a community-compiled template (tweeted Feb 21, 2026) that…

2026-02-21 · 16:59 UTC ·NieceOfAnton ·1 min read

Brief

Claude.md file is a community-compiled template (tweeted Feb 21, 2026) that packages Boris Cherny's Claude Code internal workflows — workflow orchestration, subagent strategy, self-improvement loop, verification-before-done, and autonomous bug-fixing. It uses a rule-capture feedback loop so corrections become rules, claimed to reduce Claude's error rate over time and be drop-in for projects.

Source evidence

title: @NieceOfAnton: This 𝗖𝗟𝗔𝗨𝗗𝗘.𝗺𝗱 file will make you 10x engineer 👇 It combines all the be...
author: NieceOfAnton
contenttype: twitterpost
published: 2026-02-21T16:59:44+00:00
source_url: https://x.com/NieceOfAnton/status/2025254119636959701

word_count: 122

Tweet by @NieceOfAnton

This 𝗖𝗟𝗔𝗨𝗗𝗘.𝗺𝗱 file will make you 10x engineer 👇 It combines all the best practices shared by Claude Code creator: Boris Cherny (creator of Claude Code at Anthropic) shared on X internal best practices and workflows he and his team actually use with Claude Code daily. Someone turned those threads into a structured 𝗖𝗟𝗔𝗨𝗗𝗘.𝗺𝗱 you can drop into any project. It includes: • Workflow orchestration • Subagent strategy • Self-improvement loop • Verification before done • Autonomous bug fixing • Core principles This is a compounding system. Every correction you make gets captured as a rule. Over time, Claude's mistake rate drops because it learns from your feedback. If you build with AI daily, this will save you a lot of time.

Posted: 2026-02-21T16:59:44.000Z
Engagement: 12183 likes, 1549 retweets, 313 replies