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.
npx skills add cosmicstack-labs/mercury-agent-skills --skill idea-validatorgit clone --depth 1 https://github.com/cosmicstack-labs/mercury-agent-skillsWrote 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.
[](https://agentmods.dev/skills/cosmicstack-labs/mercury-agent-skills/idea-validator)<a href="https://agentmods.dev/skills/cosmicstack-labs/mercury-agent-skills/idea-validator"><img src="https://agentmods.dev/badge/skills/cosmicstack-labs/mercury-agent-skills/idea-validator/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.
<a href="https://agentmods.dev/skills/cosmicstack-labs/mercury-agent-skills/idea-validator"><img src="https://agentmods.dev/badge/skills/cosmicstack-labs/mercury-agent-skills/idea-validator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00052 | $0.02853 |
| Opus 5 | $0.00026 | $0.01426 |
| Sonnet 5 | $0.00010 | $0.00571 |
| Haiku 4.5 | $0.00005 | $0.00285 |
Grade A, and why
idea-validator 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 9d 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.
How it starts
The opening of the file, as written. The whole thing — 254 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Idea Validator
What It Does
Turns raw ideas into testable hypotheses. Instead of falling in love with an idea and building it in a vacuum, this skill runs it through a validation gauntlet — surfacing assumptions, identifying risks, and designing the smallest possible test to learn whether the idea has legs before you commit significant resources.
The Validation Funnel
┌─────────────┐
│ RAW IDEA │
└──────┬──────┘
│
┌──────▼──────┐
│ CANVAS IT │ ← Problem, Solution, Audience, Channel
└──────┬──────┘
│
┌──────▼──────┐
│ CHECKLIST │ ← 20-point viability screen
└──────┬──────┘
│
┌──────▼──────┐
│ RISK MAP │ ← What could kill this?
└──────┬──────┘
│
┌──────▼──────┐
│ TEST DESIGN │ ← Smallest experiment that teaches most
└──────┬──────┘
│
┌──────▼──────┐
│ GO / PIVOT │
│ / KILL │
└─────────────┘
The 20-Point Validation Checklist
Rate each factor as ✅ Strong / ⚠️ Moderate / ❌ Weak
Problem & Need
- 1. Is this a real problem? Not a "nice to have" — would people pay to solve it?
- 2. Is the problem widespread? Does enough of your target audience have it?
- 3. Is the problem urgent? Are people actively searching for solutions right now?
- 4. Are people already trying to solve it? What workarounds exist?
- 5. Is the problem getting worse? Trend tailwinds?
Solution & Product
- 6. Can you solve this better than existing alternatives? 2-10× better?
- 7. Is there a clear "must-have" feature set? Or is the scope fuzzy?
- 8. Can you build a minimum version in < 4 weeks? Speed to test matters
- 9. Does the solution have a clear "why now?" Timing advantage?
- 10. Is it legally/ethically clear? Any regulatory risks?
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.
- 9d ago First seen · 254 lines · 52 tokens per session scan A 9cf55b425c70
idea-validator is a skill published in the GitHub repository cosmicstack-labs/mercury-agent-skills (471 stars, last pushed 14d ago), licensed MIT. It adds 52 tokens to every session and 2,853 once invoked, about $0.0003 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.
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