concept-forge

concept-forge is a skill for Claude Code, Codex from NickCrew/Claude-Cortex. It costs 21 tokens per session (357 once invoked), scanned A, original, MIT.

A method for comparing several product or feature ideas by expected impact, user enjoyment, effort, and risk, then choosing a small one-day experiment.

In plain words
What is it for?
It helps rank concepts, define success signals, plan a short spike, and prepare verification tasks.
Why use it?
It turns a broad set of ideas into a clear first test instead of spending time building the wrong thing.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

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/nickcrew/claude-cortex/concept_forge
Any agent
npx skills add NickCrew/Claude-Cortex --skill concept_forge
Clone the repo
git clone --depth 1 https://github.com/NickCrew/Claude-Cortex

Made for: Claude Code, Codex.

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 concept-forge

README.md
[![agentmods](https://agentmods.dev/badge/skills/nickcrew/claude-cortex/concept_forge.svg)](https://agentmods.dev/skills/nickcrew/claude-cortex/concept_forge)
Your own site
<a href="https://agentmods.dev/skills/nickcrew/claude-cortex/concept_forge"><img src="https://agentmods.dev/badge/skills/nickcrew/claude-cortex/concept_forge.svg" alt="Measured on agentmods" height="20"></a>
Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 357 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 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 $0.00021 $0.00357
Opus 5 $0.00010 $0.00179
Sonnet 5 $0.00004 $0.00071
Haiku 4.5 $0.00002 $0.00036

Measured 2d ago against content hash 96e5728283a5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

concept-forge 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 2d 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.

skills/collaboration/concept_forge/SKILL.md · 47 lines

What it actually says

/collaboration:concept-forge

Use after you have a handful of ideas and need to pick what to test first.

Inputs

  • Problem statement
  • Scoring axis (impact|delight|effort)
  • Constraints to honor

Steps

  1. Capture problem, success signals, constraints.\n2. Generate 4–6 concept cards with Impact (1–5), Delight (1–5), Effort (S/M/L), Risks, 1-day Spike.\n3. Rank by chosen axis (tie-breaker: lowest effort).\n4. Recommend top card + spike and list verification steps.\n5. Seed Tasks or hand off to /ctx:plan for execution.

Output Template

### Problem
### Success Signals
### Constraints
### Concept Cards (ranked)
- Concept … (impact, delight, effort, risks, 1-day spike)
### Recommended Spike
### Verification Checklist

Pairings

  • Precede with /collaboration:idea-lab or /collaboration:mashup to generate options.
  • Follow with /collaboration:pre-mortem to de-risk the chosen concept.
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. 2d ago First seen · 47 lines · 21 tokens per session scan A 96e5728283a5

Subscribe to this mod's changes

concept-forge is a skill published in the GitHub repository NickCrew/Claude-Cortex (37 stars, last pushed 2mo ago), licensed MIT. It adds 21 tokens to every session and 357 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 2026-09-03.

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