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 mracal/vibe-engineering --skill requirements-validatorgit clone --depth 1 https://github.com/mracal/vibe-engineeringWrote 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/mracal/vibe-engineering/requirements-validator)<a href="https://agentmods.dev/skills/mracal/vibe-engineering/requirements-validator"><img src="https://agentmods.dev/badge/skills/mracal/vibe-engineering/requirements-validator.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00038 | $0.00589 |
| Opus 5 | $0.00019 | $0.00295 |
| Sonnet 5 | $0.00008 | $0.00118 |
| Haiku 4.5 | $0.00004 | $0.00059 |
Grade A, and why
vibe-requirements-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 7d 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.
This is a copy
100% identical to vibe-requirements-validator — 0 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.
What it actually says
vibe-requirements-validator
Vague requirements cause expensive rework. Catch them early.
When to Use This Skill
- Reviewing a PRD or feature spec before implementation
- Writing acceptance criteria for user stories
- When you notice requirements like "make it fast" or "improve UX"
- Before estimating effort for a feature
When NOT to Use This Skill
- Internal technical tasks with clear scope
- Bug fixes (the bug IS the requirement)
- When requirements are already validated and approved
SMART Criteria
Score each requirement 1-5 on:
- Specific — Is it clear what exactly needs to be built? (Not "improve performance" but "reduce P95 latency to <200ms")
- Measurable — Can you objectively verify it's done? (Not "users like it" but "NPS score >40")
- Achievable — Can it be built with available resources and constraints?
- Relevant — Does it align with project goals and user needs?
- Time-bound — Is there a clear scope boundary? (Not "eventually" but "in v1.0")
Steps
-
List all requirements from the document
-
Score each on SMART (1-5 per dimension)
-
Flag issues:
- Score < 3 on any dimension → needs revision
- Measurability < 3 → most common failure, flag prominently
- Near-duplicates → consolidate
- Positioning statements masquerading as requirements → remove
-
Report:
Output Format
Requirements Validation: [Document Name]
Total Requirements: X Passing (avg >= 3.5): Y (Z%) Flagged: W
| ID | Requirement | S | M | A | R | T | Avg | Issue |
|---|---|---|---|---|---|---|---|---|
| FR-1 | "..." | 4 | 2 | 5 | 4 | 3 | 3.6 | Low measurability |
Top Issues
- Measurability crisis — X requirements have M < 3
- Near-duplicates — [list pairs]
- Not requirements — [positioning statements]
Recommended Revisions
| ID | Current | Suggested |
|---|---|---|
| FR-3 | "Improve load time" | "Reduce initial page load to <2s on 3G" |
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.
- 7d ago First seen · 67 lines · 38 tokens per session scan A e4b0925468a2
vibe-requirements-validator is a skill published in the GitHub repository mracal/vibe-engineering (3 stars, last pushed yesterday), licensed MIT. It adds 38 tokens to every session and 589 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to vibe-requirements-validator, differing in 0 lines, and is treated as a copy.
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