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Agent skill

Nrepl Eval

by penpot in penpot/penpot

Evaluate Clojure code via nREPL using the standalone scripts/nrepl-eval.mjs CLI tool.

MPL-2.0Auto-check passed

Install Nrepl Eval

skills CLI
$ npx skills add penpot/penpot --skill nrepl-eval -a claude-code

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

GitHub CLI
$ gh skill install penpot/penpot nrepl-eval --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/penpot/penpot.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/nrepl-eval .claude/skills/nrepl-eval && 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
nrepl-eval
GitHub stars
61k
Token cost
~328 tokens
SKILL.md length
103 words
Files
1
Skills in repo
24
Repo updated
First seen
Licence
MPL-2.0

At a glance

Evaluate Clojure code via nREPL using the standalone scripts/nrepl-eval.mjs CLI tool.

  • SKILL.md covers When to use, Quick Reference and Examples
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Nrepl Eval is an agent skill from penpot/penpot. Evaluate Clojure code via nREPL using the standalone scripts/nrepl-eval.mjs CLI tool.

Its SKILL.md is about 330 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

The repository describes itself as: Penpot: The open-source design platform for Product teams that need scalable collaboration. The licence is MPL-2.0.

Example prompts

  • “/nrepl-eval”

What it can do on your machine

Read from SKILL.md and the folder at commit cb1118f. 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 (its code samples are bash).

    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

Nrepl Eval loads about 328 tokens when it runs. Until then it costs about 24 tokens; SKILL.md has 103 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~24
When it runs · the whole SKILL.md, loaded when a task matches
~328

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

The full file from penpot/penpot at commit cb1118f, republished under its MPL-2.0 licence (© penpot). 103 words, ~328 tokens.

Download SKILL.mdSave it as .claude/skills/nrepl-eval/SKILL.md (or your agent's skills folder).
name
nrepl-eval
description
Evaluate Clojure code via nREPL using the standalone scripts/nrepl-eval.mjs CLI tool.

nREPL Eval

Evaluate Clojure (or ClojureScript) code via a running nREPL server using scripts/nrepl-eval.mjs.

Full documentation: mem:scripts/nrepl-eval (file: .serena/memories/scripts/nrepl-eval.md)

When to use

  • Evaluating Clojure or ClojureScript code against the running nREPL sessions (backend 6064, frontend 3447) — live inspection, patching, or debugging.

Quick Reference

bash
./scripts/nrepl-eval.mjs [options] [<code>]
FlagDescriptionDefault
--backendConnect to backend nREPL (port 6064)—
--frontendConnect to frontend nREPL (port 3447)—
-p, --port PORTnREPL server port6064
-H, --host HOSTnREPL server host127.0.0.1
-t, --timeout MSTimeout in milliseconds120000
--reset-sessionDiscard stored session and start fresh—
-e, --last-errorEvaluate *e to retrieve the last exception—
-h, --helpShow help message—

Examples

bash
./scripts/nrepl-eval.mjs '(+ 1 2 3)'
./scripts/nrepl-eval.mjs --backend '(+ 1 2 3)'
./scripts/nrepl-eval.mjs --frontend '(js/alert "hi")'
./scripts/nrepl-eval.mjs -e

© penpot, MPL-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .agents/skills/nrepl-eval of penpot/penpot.

Open the folder on GitHubat commit cb1118f

Compare with similar skills

Nrepl Eval 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.

Nrepl Eval compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Nrepl Eval this skillpenpot/penpot61k—~328Automated safety check: PassMPL-2.0
Eval-Driven Development Harnessaffaan-m/ECC275k—~1.5kAutomated safety check: PassMIT
Evalalirezarezvani/claude-skills28k1 repos~618Automated safety check: PassMIT
Eval Harnessaffaan-m/ECC275k—~2.2kAutomated safety check: PassMIT
Eval Harnessaffaan-m/ECC275k1 repos~1.7kAutomated safety check: PassMIT
OmniRoute CLI Evalsdiegosouzapw/OmniRoute74k—~1.3kAutomated safety check: PassMIT

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Questions about Nrepl Eval

What does Nrepl Eval do?

Evaluate Clojure code via nREPL using the standalone scripts/nrepl-eval.mjs CLI tool. Nrepl Eval is an agent skill from penpot/penpot.mjs CLI tool.

How do I install Nrepl Eval in Claude Code?

Run `npx skills add penpot/penpot --skill nrepl-eval -a claude-code`. Or copy the skill folder (.agents/skills/nrepl-eval in penpot/penpot) into .claude/skills/nrepl-eval in your project. Claude Code loads it when a task matches its description.

How do I install Nrepl Eval in Codex?

Run `npx skills add penpot/penpot --skill nrepl-eval -a codex`. Or copy the skill folder (.agents/skills/nrepl-eval in penpot/penpot) into .agents/skills/nrepl-eval in your project. Codex loads it when a task matches its description.

Can I use Nrepl Eval 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 penpot/penpot --skill nrepl-eval -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/nrepl-eval, .gemini/skills/nrepl-eval, .github/skills/nrepl-eval and .opencode/skills/nrepl-eval in your project.

What does Nrepl Eval need to run?

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

Does Nrepl Eval 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 Nrepl Eval 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 Nrepl Eval use?

Nrepl Eval is published under the MPL-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Nrepl Eval use?

About 328 tokens (SKILL.md is roughly 1.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Nrepl Eval?

Skills that share tags, products or a category with Nrepl Eval: Eval-Driven Development Harness (affaan-m/ECC, 275k stars), Eval (alirezarezvani/claude-skills, 28k stars), Eval Harness (affaan-m/ECC, 275k stars) and Eval Harness (affaan-m/ECC, 275k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Nrepl Eval?

penpot (a GitHub organization) maintains it in penpot/penpot, which has 60,798 GitHub stars. The repository holds 24 skills in this directory. The repository was last updated on October 7, 2026.

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