Grammar Design
Expert skill for formal grammar design including disambiguation, precedence, and validation
npx skills add a5c-ai/babysitter --skill grammar-design --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Grammar Design Skill ## Overview Expert skill for formal grammar design including disambiguation, precedence, and validation. ## Capabilities - Write EBNF/BNF grammar specifications - Design unambiguous grammars - Handle operator precedence and associativity - Analyze grammar conflicts - Design grammar for specific parser classes (LL, LR, PEG) - Document grammar with examples - Design syntax for common language constructs - Handle grammar evolution and backwards compatibility ## Target Processes - language-grammar-design.js - lexer-implementation.js - parser-development.js ## Dependencies Parsing theory literature (Dragon Book, Parsing Techniques) ## Usage Guidelines 1. **Notation**: Use standard EBNF notation for grammar specifications 2. **Disambiguation**: Make grammars unambiguous or document precedence rules 3. **Parser Class**: Design grammar to fit target parser class (LL(k), LALR, PEG) 4. **Examples**: Include examples for all grammar rules 5. **Evolution**: Plan for backwards-compatible grammar evolution ## Output Schema ```json { "type": "object", "properties": { "notation": { "type": "string", "enum": ["ebnf", "bnf", "peg", "antlr"] }, "parserClass": { "type": "string"
- Overview
- Capabilities
- Target Processes
- Dependencies
- Usage Guidelines
- Output Schema
What does the Grammar Design skill do?
Expert skill for formal grammar design including disambiguation, precedence, and validation
How do I install it?
Run `npx skills add a5c-ai/babysitter --skill grammar-design --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From a5c-ai/babysitter, a repository with 1,642 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.