flow-nexus-challenges

flow-nexus-challenges is a command for Claude Code from nmime/motiv-buy. It costs 14 tokens per session (686 once invoked), scanned A, a copy of flow-nexus-challenges, MIT.

A catalogue of coding problems with difficulty levels, submissions, completion records, and leaderboards. You can submit solution code with its programming language and execution details.

In plain words
What is it for?
Use it to browse active coding challenges, view their details, submit solutions, and record completed challenge results.
Why use it?
It provides a structured way to practise algorithms and check submitted solutions. Challenge status and leaderboard features let you track participation and results.

Command for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Use it to browse active coding challenges, view their details, submit solutions, and record completed challenge results.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/nmime/motiv-buy/challenges
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/nmime/motiv-buy

Made for: Claude Code.

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 flow-nexus-challenges

README.md
[![agentmods](https://agentmods.dev/badge/commands/nmime/motiv-buy/challenges/github.svg)](https://agentmods.dev/commands/nmime/motiv-buy/challenges)
Your own site
<a href="https://agentmods.dev/commands/nmime/motiv-buy/challenges"><img src="https://agentmods.dev/badge/commands/nmime/motiv-buy/challenges/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 flow-nexus-challenges

Your own site · 80×15
<a href="https://agentmods.dev/commands/nmime/motiv-buy/challenges"><img src="https://agentmods.dev/badge/commands/nmime/motiv-buy/challenges.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 686 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 100% copy Near-identical to another mod 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 $0.00686
Opus 5.5 $0.00006 $0.00274
Sonnet 5.5 $0.00003 $0.00137
Haiku 4.5 $0.00001 $0.00069

Measured 1mo ago against content hash a3f27e4a003f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

flow-nexus-challenges 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 1mo 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.

Origin

This is a copy

100% identical to flow-nexus-challenges — 117 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/commands/flow-nexus/challenges.md · 139 lines

How it starts

The opening of the file, as written. The whole thing — 139 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Flow Nexus Challenges

Complete coding challenges to earn rUv credits and climb the leaderboard.

List Challenges

mcp__flow -
  nexus__challenges_list({
    difficulty: 'intermediate', // beginner, advanced, expert
    category: 'algorithms',
    status: 'active',
    limit: 20,
  });

Get Challenge Details

mcp__flow -
  nexus__challenge_get({
    challenge_id: 'two-sum-problem',
  });

Submit Solution

mcp__flow -
  nexus__challenge_submit({
    challenge_id: 'challenge_id',
    user_id: 'your_id',
    solution_code: `
    function solution(nums, target) {
      const map = new Map();
      for (let i = 0; i < nums.length; i++) {
        const complement = target - nums[i];
        if (map.has(complement)) {
          return [map.get(complement), i];
        }
        map.set(nums[i], i);
      }
      return [];
    }
  `,
    language: 'javascript',
    execution_time: 45, // milliseconds
  });

Complete Challenge

mcp__flow -
  nexus__app_store_complete_challenge({
    challenge_id: 'challenge_id',
    user_id: 'your_id',
    submission_data: {
      passed_tests: 10,
      total_tests: 10,
      execution_time: 45,
    },
  });

Leaderboards

// Global leaderboard
mcp__flow -
  nexus__leaderboard_get({
    type: 'global', // weekly, monthly, challenge
    limit: 10,
  });

// Challenge-specific leaderboard
mcp__flow -
  nexus__leaderboard_get({
    type: 'challenge',
    challenge_id: 'specific_challenge',
    limit: 25,
  });

Achievements

mcp__flow -
  nexus__achievements_list({
    user_id: 'your_id',
    category: 'speed_demon', // Categories vary
  });

rUv Credits

// Check balance
mcp__flow - nexus__ruv_balance({ user_id: 'your_id' });

// View history
mcp__flow -
  nexus__ruv_history({
    user_id: 'your_id',
    limit: 20,
  });

// Earn credits (automatic on completion)
mcp__flow -
  nexus__app_store_earn_ruv({
    user_id: 'your_id',
    amount: 100,
    reason: 'Completed expert challenge',
    source: 'challenge',
  });

Read the full file on GitHub · 139 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. 1mo ago First seen · 139 lines · 14 tokens per session scan A a3f27e4a003f

Subscribe to this mod's changes

flow-nexus-challenges is a command published in the GitHub repository nmime/motiv-buy (0 stars, last pushed 9mo ago), licensed MIT. It adds 14 tokens to every session and 686 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to flow-nexus-challenges, differing in 117 lines, and is treated as a copy.