Borrowing it
Nothing to install: this file belongs to matteocervelli/llms. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/matteocervelli/llms/main/.claude/skills/story-verify/SKILL.mdgit clone --depth 1 https://github.com/matteocervelli/llmsWrote 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/matteocervelli/llms/story-verify)<a href="https://agentmods.dev/skills/matteocervelli/llms/story-verify"><img src="https://agentmods.dev/badge/skills/matteocervelli/llms/story-verify/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/matteocervelli/llms/story-verify"><img src="https://agentmods.dev/badge/skills/matteocervelli/llms/story-verify.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00065 | $0.01593 |
| Opus 5 | $0.00032 | $0.00796 |
| Sonnet 5 | $0.00013 | $0.00319 |
| Haiku 4.5 | $0.00006 | $0.00159 |
Grade A, and why
story-verify 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 5d 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 — 192 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Story Verification
Validate stories, check test coverage gaps, verify PRP completeness, and assess development readiness.
Usage
/story-verify # Auto: validate all stories in project
/story-verify invest <id|all> # INVEST criteria scoring
/story-verify coverage # Map stories -> tests, show gaps
/story-verify prp # Check PRP completeness against stories
/story-verify ready <id> # Development readiness assessment
Workflow
Step 1: Determine Mode
Parse $ARGUMENTS for explicit subcommand. If no arguments, run invest all as default.
Detect project context:
PROJECT_INFO=$(bash "$HOME/.claude/skills/story/lib/project-detector.sh")
Step 2: Route to Subcommand
Subcommand: invest
INVEST criteria validation — no Python scripts, pure template-based inline logic.
Process
- Load story YAML from
stories/yaml-source/US-XXXX.yaml(or all if "all") - Read
templates/invest-checklist.mdfor scoring rules - Score each criterion (0-100):
| Criterion | Score 100 | Score 50 | Score 0 |
|---|---|---|---|
| Independent | No blocked_by, or only 1 external dep | 2-3 dependencies | Circular deps or >3 blockers |
| Negotiable | "i_want" describes outcome/behavior | Mentions specific tech but flexible | Prescribes exact implementation |
| Valuable | Clear "so_that" with measurable benefit | Vague benefit ("improve experience") | Missing "so_that" entirely |
| Estimable | Has story_points + >=3 acceptance_criteria | Has points OR criteria, not both | Missing both points and criteria |
| Small | 1-5 story points | 6-8 story points | >8 points (must split) |
| Testable | All criteria have given/when/then | Some criteria missing parts | No given/when/then at all |
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 5d ago First seen · 192 lines · 65 tokens per session scan A 428014e39f11
story-verify is a skill published in the GitHub repository matteocervelli/llms (25 stars, last pushed 3mo ago), licensed MIT. It adds 65 tokens to every session and 1,593 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 2026-09-03.
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