Operational Semantics Builder

SkillDev tools

Define and test operational semantics specifications for programming languages

Instructions available. Your AI can read the instructions. Execution depends on the setup they require.

Add ahel to your AI once: Claude, ChatGPT, Cursor, Claude Code or Codex. Then ask it to use this.

Then ask your AI: use the Operational Semantics Builder skill

What this skill tells your AI

The instructions your AI receives, as published by a5c-ai/babysitter in library/specializations/domains/science/computer-science/skills/operational-semantics-builder/SKILL.md and read by ahel’s review.

Purpose

Provides expert guidance on defining operational semantics for programming language specification and testing.

Capabilities

  • Small-step semantics rule generation
  • Big-step semantics rule generation
  • Evaluation context definition
  • Substitution and binding handling
  • Semantics execution/testing
  • Equivalence proofs

Usage Guidelines

  1. Semantics Style: Choose small-step or big-step
  2. Rule Definition: Define reduction/evaluation rules
  3. Contexts: Define evaluation contexts if needed
  4. Testing: Execute semantics on test programs
  5. Validation: Verify expected behavior

Tools/Libraries

  • PLT Redex
  • K Framework
  • Ott
  • Maude

Signals

GitHub stars
2k
Forks
112
Last commit
Sep 2026
Advanced
Item type
skill
Key
operational-semantics-builder
Source
github.com/a5c-ai/babysitter