Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/ValorVie/custom-skillsnpx agentmods add skills/valorvie/custom-skills/bdd-assistantWrote 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/valorvie/custom-skills/bdd-assistant)<a href="https://agentmods.dev/skills/valorvie/custom-skills/bdd-assistant"><img src="https://agentmods.dev/badge/skills/valorvie/custom-skills/bdd-assistant/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/valorvie/custom-skills/bdd-assistant"><img src="https://agentmods.dev/badge/skills/valorvie/custom-skills/bdd-assistant.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 | $0.00076 | $0.02246 |
| Opus 5 | $0.00038 | $0.01123 |
| Sonnet 5 | $0.00015 | $0.00449 |
| Haiku 4.5 | $0.00008 | $0.00225 |
Grade A, and why
bdd-assistant 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.
How it starts
The opening of the file, as written. The whole thing — 321 lines — stays where its author put it; the contents beside it link to each section on GitHub.
BDD Assistant
Language: English | 繁體中文
Version: 1.0.0 Last Updated: 2026-01-19 Applicability: Claude Code Skills
Purpose
This skill guides developers through the Behavior-Driven Development workflow, helping them:
- Conduct Discovery sessions to explore requirements
- Write effective Gherkin scenarios in Given-When-Then format
- Create reusable step definitions
- Integrate BDD with TDD for implementation
- Maintain living documentation
Quick Reference
BDD Workflow Checklist
┌─────────────────────────────────────────────────────────────────┐
│ 🔍 DISCOVERY Phase │
│ □ Stakeholders identified (Business, Dev, QA) │
│ □ User story discussed and understood │
│ □ Concrete examples collected (Example Mapping) │
│ □ Edge cases identified │
│ □ Questions answered or noted for follow-up │
├─────────────────────────────────────────────────────────────────┤
│ 📝 FORMULATION Phase │
│ □ Scenarios use correct Gherkin syntax │
│ □ Scenarios are declarative (WHAT, not HOW) │
│ □ Business language used (no technical jargon) │
│ □ Each scenario is independent and self-contained │
│ □ Scenarios have 5-10 steps maximum │
│ □ Scenarios reviewed by stakeholders │
├─────────────────────────────────────────────────────────────────┤
│ ⚙️ AUTOMATION Phase │
│ □ Step definitions created for all steps │
│ □ Step definitions are reusable │
│ □ Scenarios fail initially (RED) │
│ □ TDD used for unit-level implementations │
│ □ All scenarios pass (GREEN) │
│ □ Code refactored and clean │
└─────────────────────────────────────────────────────────────────┘
What ships with it
2 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.
- 7d ago First seen · 321 lines · 76 tokens per session scan A 0f769e00444e
bdd-assistant is a skill published in the GitHub repository ValorVie/custom-skills (5 stars, last pushed 2d ago), licensed MIT. It adds 76 tokens to every session and 2,246 once invoked, about $0.0004 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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