We split this common-coding-style.md into the rules it gives an agent

7 rules. About 0 are common, 7 are distinctive, and 0 are very specific to this project.

• ≈0

  Common · estimate

  Many files like this have a rule of this kind.

• ≈7

  Distinctive · estimate

  This author's own choices. Worth a look.

• 0

  Very specific

  Tied to their project's names, files or tools. Probably skip.

• Common
• Distinctive
• Very specific

1. Distinctive:

   ALWAYS create new objects, NEVER mutate existing ones:

   line 9
2. Distinctive:

   ALWAYS handle errors comprehensively:

   line 29
3. Distinctive:

   Never silently swallow errors

   line 33
4. Distinctive:

   ALWAYS validate at system boundaries:

   line 37
5. Distinctive:

   Use schema-based validation where available

   line 39
6. Distinctive:

   Never trust external data (API responses, user input, file content)

   line 41
7. Distinctive:

   Before marking work complete:

   line 45

≈ “Common” is an estimate: at least 1 in 5 of the 6,350 Cursor rule files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

• Other versions17 projects use a version of this.

  Word for word · 17

  1. affaan-m/ECC★ 246k100% same
  2. loulanyue/awesome-claude-notes★ 272100% same
  3. tpavanipradeep/everything-claude-code★ 104100% same
  4. mit-network/everything-claude-code★ 76100% same
  5. ysyecust/everything-claude-code★ 44100% same
  6. j7-dev/everything-github-copilot★ 19100% same
  7. Infopibe/everything-claude-code★ 8100% same
  8. yapota2018/affaan-m-everything-claude-code★ 4100% same
  9. ArogyaReddy/https-github.com-affaan-m-everything-claude-code1★ 2100% same
  10. ashutoshrathi0909-oss/everything-claude-code★ 1100% same

  7 more not listed

  Edited · 0

  None found.

  Wrote their own version · 0

  None found.

  How matches are found. Word for word: the exact same text. Edited: shares passages with this file (“99% same” means 99% of its five-word phrases also appear here; 10% or more counts). Their own version: similar meaning, or, weakest, the same name. We can’t tell which project had it first. Projects are counted among the 200 most-starred candidates, and mentions are links to the repository we found, up to 50 per site, so both counts are a floor.

• Where files are headingNew Cursor rule files have more rules about planning and tracking tasks, and fewer about code style.

  Of the Cursor rule files we read, the 3,978 first seen in the last six months, against the older ones: the kind of rule that gained most share, and the kind that lost most. About files like this in general, not this one, and an estimate, since a kind is a pattern in the words.

• In this repository224 other files it gives its agents.

  • AGENTS.mdAGENTS.md
  • .codex/AGENTS.mdAGENTS.md
  • CLAUDE.mdCLAUDE.md
  • examples/CLAUDE.mdCLAUDE.md
  • .cursor/rules/common-agents.mdCursor rule
  • .cursor/rules/common-development-workflow.mdCursor rule
  • .cursor/rules/common-git-workflow.mdCursor rule
  • .cursor/rules/common-hooks.mdCursor rule
  • .cursor/rules/common-patterns.mdCursor rule
  • .cursor/rules/common-performance.mdCursor rule
  • .cursor/rules/common-security.mdCursor rule
  • .cursor/rules/common-testing.mdCursor rule
  • .cursor/rules/golang-coding-style.mdCursor rule
  • .cursor/rules/golang-hooks.mdCursor rule
  • .cursor/rules/golang-patterns.mdCursor rule
  • .cursor/rules/golang-security.mdCursor rule
  • .cursor/rules/golang-testing.mdCursor rule
  • .cursor/rules/kotlin-coding-style.mdCursor rule
  • .cursor/rules/kotlin-hooks.mdCursor rule
  • .cursor/rules/kotlin-patterns.mdCursor rule
  • .cursor/rules/kotlin-security.mdCursor rule
  • .cursor/rules/kotlin-testing.mdCursor rule
  • .cursor/rules/php-coding-style.mdCursor rule
  • .cursor/rules/php-hooks.mdCursor rule
  • .cursor/rules/php-patterns.mdCursor rule
  • .cursor/rules/php-security.mdCursor rule
  • .cursor/rules/php-testing.mdCursor rule
  • .cursor/rules/python-coding-style.mdCursor rule
  • .cursor/rules/python-hooks.mdCursor rule
  • .cursor/rules/python-patterns.mdCursor rule
  • .cursor/rules/python-security.mdCursor rule
  • .cursor/rules/python-testing.mdCursor rule
  • .cursor/rules/swift-coding-style.mdCursor rule
  • .cursor/rules/swift-hooks.mdCursor rule
  • .cursor/rules/swift-patterns.mdCursor rule
  • .cursor/rules/swift-security.mdCursor rule
  • .cursor/rules/swift-testing.mdCursor rule
  • .cursor/rules/typescript-coding-style.mdCursor rule
  • .cursor/rules/typescript-hooks.mdCursor rule
  • .cursor/rules/typescript-patterns.mdCursor rule
  • .cursor/rules/typescript-security.mdCursor rule
  • .cursor/rules/typescript-testing.mdCursor rule
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