pm-challenge-me

pm-challenge-me is a skill for Claude Code, Codex from nmrtn/nanopm. It costs 60 tokens per session (6,425 once invoked), scanned C, original, MIT.

A product-review checklist that examines what you are building, who it is for, and the biggest strategic gap. It records the review and three questions in a Markdown file.

In plain words
What is it for?
Use it to get a skeptical review of a product idea or project and capture the questions the team should answer.
Why use it?
It helps expose weak assumptions and unanswered product questions before they become expensive problems.

Skill for Claude CodeCodex

Part of the nanopm plugin — 26 skills, 1 hook shipped together

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.

agentmods
npx agentmods add skills/nmrtn/nanopm/pm-challenge-me
Any agent
npx skills add nmrtn/nanopm --skill pm-challenge-me
Clone the repo
git clone --depth 1 https://github.com/nmrtn/nanopm

Made for: Claude Code, Codex.

Or install nanopm, the plugin that ships this one along with the rest of its 26 skills, 1 hook.

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 pm-challenge-me

README.md
[![agentmods](https://agentmods.dev/badge/skills/nmrtn/nanopm/pm-challenge-me.svg)](https://agentmods.dev/skills/nmrtn/nanopm/pm-challenge-me)
Your own site
<a href="https://agentmods.dev/skills/nmrtn/nanopm/pm-challenge-me"><img src="https://agentmods.dev/badge/skills/nmrtn/nanopm/pm-challenge-me.svg" alt="Measured on agentmods" height="20"></a>
Per session 60 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,425 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 2 findings. Scan, not verified.
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 $0.00060 $0.06425
Opus 5 $0.00030 $0.03213
Sonnet 5 $0.00012 $0.01285
Haiku 4.5 $0.00006 $0.00643

Measured 6d ago against content hash 736507c6080c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade C, and why

pm-challenge-me scanned grade C with 2 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 6d 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.

Downloads and executes remote codehighSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

{ echo "ERROR: nanopm not installed. Run: curl -fsSL https://raw.githubusercontent.com/nmrtn/nanopm/main/setup | bash"; exit 1; }

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

{ echo "ERROR: nanopm not installed. Run: curl -fsSL https://raw.githubusercontent.com/nmrtn/nanopm/main/setup | bash"; exit 1; }
pm-challenge-me/SKILL.md · 468 lines

How it starts

The opening of the file, as written. The whole thing — 468 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Multi-host portability rules. When invoking AskUserQuestion:

  1. The header field MUST be a short noun phrase (≤ 12 characters). Mistral Vibe rejects longer headers with string_too_long. Pick from: Start, Target, Scope, Audience, Methodology, Feature, Question.
  2. The options list MUST have at least 2 items. Vibe rejects empty/single-option calls. For free-text input, always provide ≥ 2 framing options (e.g. Yes, here's the input / Skip) — never call ask_user_question with options: [].

Preamble (run first)

source ~/.nanopm/lib/nanopm.sh 2>/dev/null || \
  source .nanopm/lib/nanopm.sh 2>/dev/null || \
  { echo "ERROR: nanopm not installed. Run: curl -fsSL https://raw.githubusercontent.com/nmrtn/nanopm/main/setup | bash"; exit 1; }
nanopm_preamble
_CONTEXT_FILE="CONTEXT.md"

Phase 0: Prior context

Check if this project has been challenged before (including under the legacy /pm-audit name):

source ~/.nanopm/lib/nanopm.sh 2>/dev/null || source .nanopm/lib/nanopm.sh 2>/dev/null || true
nanopm_context_read pm-challenge-me
nanopm_context_read pm-audit  # legacy — this skill was previously /pm-audit

If a prior entry exists (either name), show: "Prior challenge session found from {ts}. Running a fresh one — prior context will inform it."

If a legacy .nanopm/AUDIT.md exists and .nanopm/wiki/docs/challenges.md does not, read AUDIT.md as prior context — it is the output of the previous incarnation of this skill.

Read all prior context to inform the session:

source ~/.nanopm/lib/nanopm.sh 2>/dev/null || source .nanopm/lib/nanopm.sh 2>/dev/null || true
nanopm_context_read pm-challenge-me

Phase 1: Website bootstrap (optional)

Check if a company website is already stored:

source ~/.nanopm/lib/nanopm.sh 2>/dev/null || source .nanopm/lib/nanopm.sh 2>/dev/null || true
_WEBSITE=$(nanopm_config_get "company_website")
echo "WEBSITE: ${_WEBSITE:-none}"

Read the full file on GitHub · 468 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. 6d ago First seen · 468 lines · 60 tokens per session scan C 736507c6080c

Subscribe to this mod's changes

pm-challenge-me is a skill published in the GitHub repository nmrtn/nanopm (48 stars, last pushed 2mo ago), licensed MIT. It adds 60 tokens to every session and 6,425 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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