no-vibe: Command for Claude Code

.opencode/commands/no-vibe-challenge.md

no-vibe-challenge is a command for Claude Code, OpenCode from rizukirr/no-vibe. It costs 14 tokens per session (987 once invoked), scanned A, original, MIT.

A command that creates a hands-on coding exercise based on the current project or learning session. The learner writes the solution without having AI add code to the project files.

In plain words
What is it for?
Use it to practise areas such as error handling or recursion, or to turn the current project and study session into a coding challenge.
Why use it?
It gives practice targeted to what the learner is working on instead of another explanation or ready-made implementation. It can also focus the exercise on a chosen topic.

Command for Claude CodeOpenCode

Written for Claude Code and OpenCode: argument-hint in frontmatter, but also installed under .opencode/. Also seen: mentions OpenCode.

This is rizukirr/no-vibe's own configuration. It tells Claude Code and OpenCode how to work on no-vibe itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything no-vibe configures →

Part of the no-vibe plugin — 3 skills, 3 commands shipped together

Reuse

Borrowing it

Nothing to install: this file belongs to rizukirr/no-vibe. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/rizukirr/no-vibe/main/.opencode/commands/no-vibe-challenge.md
Clone the repo
git clone --depth 1 https://github.com/rizukirr/no-vibe

Made for: Claude Code, OpenCode.

Or install no-vibe, the plugin that ships this one along with the rest of its 3 skills, 3 commands.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for no-vibe-challenge

README.md
[![agentmods](https://agentmods.dev/badge/commands/rizukirr/no-vibe/no-vibe-challenge/github.svg)](https://agentmods.dev/commands/rizukirr/no-vibe/no-vibe-challenge)
Your own site
<a href="https://agentmods.dev/commands/rizukirr/no-vibe/no-vibe-challenge"><img src="https://agentmods.dev/badge/commands/rizukirr/no-vibe/no-vibe-challenge/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for no-vibe-challenge

Your own site · 80×15
<a href="https://agentmods.dev/commands/rizukirr/no-vibe/no-vibe-challenge"><img src="https://agentmods.dev/badge/commands/rizukirr/no-vibe/no-vibe-challenge.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 14 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 987 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00014 $0.00987
Opus 5 $0.00007 $0.00494
Sonnet 5 $0.00003 $0.00197
Haiku 4.5 $0.00001 $0.00099

Measured 11d ago against content hash 61b3d8250849, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

no-vibe-challenge scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.opencode/commands/no-vibe-challenge.md · 119 lines

How it starts

The opening of the file, as written. The whole thing — 119 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/no-vibe:challenge

Generate a hands-on coding challenge. You write everything — no AI code in your files.

Arguments

$ARGUMENTS is an optional focus area. Examples:

  • /no-vibe:challenge — general challenge from project or session context
  • /no-vibe:challenge error handling — challenge focused on error handling
  • /no-vibe:challenge recursion — challenge focused on recursion

Instructions for OpenCode

1. Activate no-vibe mode

You MUST run this exact bash command:

mkdir -p .no-vibe/notes .no-vibe/refs .no-vibe/data/sessions && touch .no-vibe/active

Then verify with:

test -f .no-vibe/active

If verification succeeds, explicitly state in chat: no-vibe is active (.no-vibe/active exists).

2. Determine challenge context

Check for an active no-vibe session:

grep -rl '"status": "in_progress"' .no-vibe/data/sessions/ 2>/dev/null

If active session found:

  • Read the session JSON to get topic, current layer, mode
  • Generate a challenge that exercises what the user just learned
  • Example: user just built a tokenizer → "Write a simple expression parser that uses your tokenizer"

If no active session:

  • Analyze the user's project: Read/Grep key files to understand stack, patterns, domain
  • Generate a challenge relevant to the actual codebase
  • Example: project has a REST API → "Add a new endpoint with input validation from scratch"

If $ARGUMENTS provided:

  • Use the focus area to narrow the challenge topic
  • Combine with session/project context for relevance

3. Read the adaptation stack

Read ~/.no-vibe/PROFILE.md, .no-vibe/SUMMARY.md, and every *.md under ~/.no-vibe/user/ and .no-vibe/user/ (sorted by filename) when present. Calibrate challenge difficulty:

  • PROFILE.md ## Identity & expertise / ## Observed strengths flags competence → tune scope upward.
  • PROFILE.md ## Known gaps flags weak areas → tune scope downward; more scaffolding.
  • PROFILE.md ## Disclosure mode records the user's default disclosure preference (guided vs. showcase) — apply the same default when sketching the challenge prompt; prediction_gate: off skips the predict-before-run micro-check.
  • SUMMARY.md ## Open Questions flags concepts the user dodged in prior layers → reinforce them in the challenge.
  • SUMMARY.md ## Accomplishments shows what the user has already built → build on a recent success or revisit a recent Block area.
  • Any user/*.md file naming an explicit constraint → respect it without re-asking.

Read the full file on GitHub · 119 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 11d ago First seen · 119 lines · 14 tokens per session scan A 61b3d8250849

Subscribe to this mod's changes

no-vibe-challenge is a command published in the GitHub repository rizukirr/no-vibe (36 stars, last pushed 3mo ago), licensed MIT. It adds 14 tokens to every session and 987 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.