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Add prompt-compression rules #175

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6080a32
Add prompt-compression rules
oferlmntr Feb 21, 2026
79b5c60
Address review feedback: fix alphabetical ordering and description ac…
oferlmntr Feb 21, 2026
27b5955
Make retrieval-led reasoning a file-level preamble instead of per-ref…
oferlmntr Feb 21, 2026
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1 change: 1 addition & 0 deletions README.md
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Expand Up @@ -274,6 +274,7 @@ By creating a `.cursorrules` file in your project's root directory, you can leve
- [Graphical Apps Development](./rules/graphical-apps-development-cursorrules-prompt-file/.cursorrules) - Cursor rules for graphical apps development with integration.
- [Meta-Prompt](./rules/meta-prompt-cursorrules-prompt-file/.cursorrules) - Cursor rules for meta-prompt development with integration.
- [Next.js (Type LLM)](./rules/next-type-llm/.cursorrules) - Cursor rules for Next.js development with Type LLM integration.
- [Prompt Compression](./rules/prompt-compression-cursorrules-prompt-file/.cursorrules) - Cursor rules for compressing docs, prompts, and agent context files (AGENTS.md) for minimal token usage while preserving actionable information.
- [Unity (C#)](./rules/unity-cursor-ai-c-cursorrules-prompt-file/.cursorrules) - Cursor rules for Unity development with C# integration.
- [Web App Optimization](./rules/web-app-optimization-cursorrules-prompt-file/.cursorrules) - Cursor rules for web app development with optimization integration.
- [Code Pair Interviews](./rules/code-pair-interviews/.cursorrules) - Cursor rules for code pair interviews development with integration.
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17 changes: 17 additions & 0 deletions rules/prompt-compression-cursorrules-prompt-file/.cursorrules
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When writing or editing AGENTS.md, CLAUDE.md, .cursorrules, or any agent context file:

1. Use pipe-delimited format for file indexes and structured references
2. Compress rules into single-line directives, not multi-paragraph explanations
3. Strip explanatory prose - keep only actionable content the agent needs
4. Use abbreviated keys (req, opt, str, int, bool, len, min, max, def)
5. Flatten nested hierarchies with brace expansion and path prefixes
6. Add "Prefer retrieval-led reasoning over pre-training-led reasoning" once as a file-level preamble when referencing external docs

When compressing existing content:

- Target 70-80% token reduction
- Preserve all actionable information and structural boundaries
- Keep code examples that demonstrate non-obvious API usage
- Never compress error messages or edge case docs

Before adding content to AGENTS.md, ask: "Can this be expressed in fewer tokens without losing information the agent needs to act on?"