Agent skill

Interpreter Design

by revfactory in revfactory/claude-code-harness

Programming language interpreter design and implementation guide.

No licenceAuto-check passed

Install Interpreter Design

skills CLI
$ npx skills add revfactory/claude-code-harness --skill interpreter-design -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install revfactory/claude-code-harness interpreter-design --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/revfactory/claude-code-harness.git skills-src && mkdir -p .claude/skills && cp -r skills-src/experiments/results/case-007/harness/.claude/skills/interpreter-design .claude/skills/interpreter-design && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
interpreter-design
GitHub stars
120
Token cost
~387 tokens
SKILL.md length
108 words
Files
3 (incl. references)
Skills in repo
15
Repo updated
First seen
Licence
None found

At a glance

Programming language interpreter design and implementation guide.

  • Works in 4 steps: Lexer: 소스 코드를 토큰 스트림으로 변환 → Parser: 재귀 하강 + Pratt Parser로 AST 생성 → Evaluator: Tree-walking으로 AST 평가 → …
  • The user requests building an interpreter
  • SKILL.md covers 4단계 파이프라인 워크플로우, 파일 구조 (필수), 핵심 원칙 and 테스트 전략
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Interpreter Design is an agent skill from revfactory/claude-code-harness. Programming language interpreter design and implementation guide. Use when the user requests building an interpreter, parser, lexer, or language implementation — including Pratt parsing, AST evaluation, scope chains, and closures.

Its SKILL.md is about 390 tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including reference files (for example `references/ast-evaluator.md` and `references/pratt-parser.md`).

When your agent uses it

  • The user requests building an interpreter
  • Language implementation — including Pratt parsing

Example prompts

  • “/interpreter-design”

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

  1. Lexer: 소스 코드를 토큰 스트림으로 변환
  2. Parser: 재귀 하강 + Pratt Parser로 AST 생성
  3. Evaluator: Tree-walking으로 AST 평가
  4. Environment: 스코프 체인 + 클로저 지원

What it can do on your machine

Read from SKILL.md and the folder at commit 267005c. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Interpreter Design loads about 387 tokens when it runs, and up to ~1.3k if it reads all its reference files. Until then it costs about 62 tokens; SKILL.md has 108 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~62
When it runs · the whole SKILL.md, loaded when a task matches
~387
With references · SKILL.md plus every file in references/, read only if the agent opens them
~1.3k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 108 words (~387 tokens).

“프로그래밍 언어 인터프리터 설계 및 구현 가이드”

— opening of SKILL.md by revfactory
name
interpreter-design

Read the full SKILL.md on GitHub

Files

SKILL.md and 2 other files (references) in experiments/results/case-007/harness/.claude/skills/interpreter-design of revfactory/claude-code-harness.

  • SKILL.md
  • references/ast-evaluator.md
  • references/pratt-parser.md

Open the folder on GitHubat commit 267005c

Compare with similar skills

Interpreter Design next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Interpreter Design compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Interpreter Design this skillrevfactory/claude-code-harness120—~387Automated safety check: PassNone
TransformerLens InterpretabilityOrchestra-Research/AI-Research-SKILLs13k4 repos~3kAutomated safety check: PassMIT
Strict Programming Practicescode-yeongyu/oh-my-openagent70k—~9.5kAutomated safety check: PassCustom licence
Referral Programalirezarezvani/claude-skills28k—~3.4kAutomated safety check: PassMIT
Nnsight Remote InterpretabilityOrchestra-Research/AI-Research-SKILLs13k3 repos~3.3kAutomated safety check: PassMIT
Intern Programsickn33/agentic-awesome-skills47k1 repos~3.9kAutomated safety check: PassMIT

Similar skills

  • TransformerLens Interpretability

    Orchestra-Research/AI-Research-SKILLs

    Guides mechanistic interpretability work with TransformerLens: loading models, caching activations, using HookPoints, activation patching and attention-pattern analysis.

    13k GitHub starsUsed in 4 repos~3k tokens
    AI & LLM EngineeringAuto-check passed
  • Strict Programming Practices

    code-yeongyu/oh-my-openagent

    Applies strict, type-first coding rules for Python, Rust, TypeScript and Go, loading the matching language reference before the agent writes or edits any code.

    70k GitHub stars~9.5k tokensUpdated today
    DevelopmentAuto-check passed
  • Referral Program

    alirezarezvani/claude-skills

    When the user wants to design, launch, or optimize a referral or affiliate program.

    28k GitHub stars~3.4k tokensUpdated 1 mo ago
    Marketing & SEOAuto-check passed
  • Nnsight Remote Interpretability

    Orchestra-Research/AI-Research-SKILLs

    Provides guidance for interpreting and manipulating neural network internals using nnsight with optional NDIF remote execution.

    13k GitHub starsUsed in 3 repos~3.3k tokens
    AI & LLM EngineeringAuto-check passed
  • Intern Program

    sickn33/agentic-awesome-skills

    Internship register: intern and department, supervisor and mentor, institution, start and end dates, stipend, learning goals, mid-term and final scores, conversion flags.

    47k GitHub starsUsed in 1 repo~3.9k tokens
    Auto-check passed
  • Mentorship Program

    sickn33/agentic-awesome-skills

    Mentorship register: mentor and mentee pair, department, focus area, mentee goal, session counts, last and next session, overall rating, progress notes and status.

    47k GitHub starsUsed in 1 repo~3.7k tokens
    Auto-check passed

More from revfactory/claude-code-harness

All 15 skills in this repo
  • Microservice Patterns

    revfactory/claude-code-harness

    Event-driven microservice architecture patterns guide. An agent skill from revfactory/claude-code-harness.

    120 GitHub stars~502 tokensUpdated 7 mo ago
    Auto-check passed
  • Query Engine Design

    revfactory/claude-code-harness

    SQL query engine design and implementation guide. An agent skill from revfactory/claude-code-harness.

    120 GitHub stars~474 tokensUpdated 7 mo ago
    Auto-check passed
  • API Documentation

    revfactory/claude-code-harness

    Write accurate and complete library API documentation. An agent skill from revfactory/claude-code-harness.

    120 GitHub stars~263 tokensUpdated 7 mo ago
    Auto-check passed
  • Crdt Algorithms

    revfactory/claude-code-harness

    CRDT-based real-time collaborative text editor implementation guide.

    120 GitHub stars~375 tokensUpdated 7 mo ago
    Auto-check passed
  • Express API Design

    revfactory/claude-code-harness

    Express.js REST API design and implementation guide. An agent skill from revfactory/claude-code-harness.

    120 GitHub stars~276 tokensUpdated 7 mo ago
    Auto-check passed
  • Static Site Generator

    revfactory/claude-code-harness

    Build a markdown-based static site generator with zero dependencies.

    120 GitHub stars~291 tokensUpdated 7 mo ago
    Auto-check passed

Questions about Interpreter Design

What does Interpreter Design do?

Programming language interpreter design and implementation guide. Interpreter Design is an agent skill from revfactory/claude-code-harness. Programming language interpreter design and implementation guide.

When should I use Interpreter Design?

Interpreter Design fits situations like: the user requests building an interpreter; language implementation — including Pratt parsing.

How do I install Interpreter Design in Claude Code?

Run `npx skills add revfactory/claude-code-harness --skill interpreter-design -a claude-code`. Or copy the skill folder (experiments/results/case-007/harness/.claude/skills/interpreter-design in revfactory/claude-code-harness) into .claude/skills/interpreter-design in your project. Claude Code loads it when a task matches its description.

How do I install Interpreter Design in Codex?

Run `npx skills add revfactory/claude-code-harness --skill interpreter-design -a codex`. Or copy the skill folder (experiments/results/case-007/harness/.claude/skills/interpreter-design in revfactory/claude-code-harness) into .agents/skills/interpreter-design in your project. Codex loads it when a task matches its description.

Can I use Interpreter Design in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add revfactory/claude-code-harness --skill interpreter-design -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/interpreter-design, .gemini/skills/interpreter-design, .github/skills/interpreter-design and .opencode/skills/interpreter-design in your project.

What does Interpreter Design need to run?

SKILL.md names no scripts, command-line tools or credentials: Interpreter Design is instructions for the agent only.

Does Interpreter Design access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Interpreter Design safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Interpreter Design use?

No licence was found for Interpreter Design or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Interpreter Design use?

About 387 tokens (SKILL.md is roughly 1.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 887 tokens, read only when the agent opens those files.

What are the alternatives to Interpreter Design?

Skills that share tags, products or a category with Interpreter Design: TransformerLens Interpretability (Orchestra-Research/AI-Research-SKILLs, 13k stars), Strict Programming Practices (code-yeongyu/oh-my-openagent, 70k stars), Referral Program (alirezarezvani/claude-skills, 28k stars) and Nnsight Remote Interpretability (Orchestra-Research/AI-Research-SKILLs, 13k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Interpreter Design?

revfactory (a GitHub user) maintains it in revfactory/claude-code-harness, which has 120 GitHub stars. The repository holds 15 skills in this directory. The repository was last updated on March 6, 2026.

Source: revfactory/claude-code-harness on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.