concept-test

A structured test of a product idea or value proposition with people representing a chosen target audience. It examines whether the audience has the problem, understands the proposed solution, and would adopt it.

In plain words
What is it for?
Use it to test early product concepts, feature ideas, or marketing messages. It can gather feedback about pain points, usefulness, willingness to try, and objections.
Why use it?
It helps reveal weak demand, poor fit, or adoption barriers before time is spent building the product. The focus is on testing the idea rather than confirming a decision already made.

Skill for Claude CodeCodex

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/dataviking-tech/althing/concept-test
Any agent
npx skills add DataViking-Tech/Althing --skill concept-test
Clone the repo
git clone --depth 1 https://github.com/DataViking-Tech/Althing

Made for: Claude Code, Codex.

Per session 33 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 937 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 $0.00033 $0.00937
Opus 5 $0.00016 $0.00468
Sonnet 5 $0.00007 $0.00187
Haiku 4.5 $0.00003 $0.00094

Measured yesterday against content hash ad9da62d47fd, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

concept-test 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 yesterday.

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.

site/.well-known/agent-skills/concept-test/SKILL.md · 73 lines

How it starts

The opening of the file, as written. The whole thing — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are running a concept test using the althing MCP tools.

What You Do

You help the user pressure-test an early-stage product concept, value prop, or feature idea against a specific target audience before they build or ship it. The goal is to surface whether the problem is real and whether the proposed solution actually addresses it — not to validate a decision that's already been made.

  1. Clarify the concept and the audience.
  2. Design concept-oriented personas drawn from (or biased toward) the target audience.
  3. Run the panel with questions that probe pain, fit, willingness-to-adopt, and objections.
  4. Synthesize — is the problem real, does the concept resonate, and what blocks adoption?

Available MCP Tools

  • mcp__althing__run_panel — Primary tool. Run a multi-question panel with target-audience personas.
  • mcp__althing__run_quick_poll — Use for a single "would you try this?" temperature check.
  • mcp__althing__list_persona_packs / mcp__althing__get_persona_pack — Reuse saved target-audience packs.
  • mcp__althing__save_persona_pack — Save a new audience pack if the user is likely to re-test.
  • mcp__althing__list_instrument_packs — Check for bundled packs that fit (e.g. product-feedback, market-research).

Workflow

Step 1: Frame the Concept

Ask the user for:

  • A 2-3 sentence description of the concept (what it is, who it's for, what problem it solves).
  • The target audience (role, demographic, or psychographic).
  • What decision this test is meant to inform ("should we keep exploring?" vs. "which direction?").

Step 2: Build or Load Personas

  • 4-8 personas, biased toward the target audience but with at least one skeptic and at least one adjacent non-target to stress-test the boundaries.
  • Each persona should have a plausible reason the problem may or may not apply to them.

Step 3: Design the Instrument

Include questions in this order:

  1. Problem probe — "Does this describe something you've actually experienced?" (don't lead with the solution)
  2. Concept reveal — present the concept, ask for gut reaction.
  3. Fit — "Who do you know this would be for?" (reveals whether they see themselves in it)
  4. Adoption blockers — "What would stop you from trying this?"
  5. Willingness — rough price sensitivity or alternative-they'd-pick.

Read the full file on GitHub · 73 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. yesterday First seen · 73 lines · 33 tokens per session scan A ad9da62d47fd

Subscribe to this mod's changes

concept-test is a skill published in the GitHub repository DataViking-Tech/Althing (2 stars, last pushed 23d ago), licensed MIT. It adds 33 tokens to every session and 937 once invoked, about $0.0002 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 2026-08-31.

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