Plan BDD scenarios

Plan BDD scenarios is a skill for Claude Code from Intai/story-flow. It costs 10 tokens per session (87 once invoked), scanned A, original, MIT.

A skill for writing BDD test scenarios in .feature files. BDD, or behavior-driven development, records expected software behavior in readable steps such as Given, When, and Then.

In plain words
What is it for?
Use it to plan test cases from a story file and save the scenarios in a .feature file without creating Playwright test code.
Why use it?
It turns a user story into a clear testing plan before implementation begins. It keeps the work focused on scenarios instead of test-code details.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

Part of the story-flow plugin — 5 skills, 4 commands, 5 agents shipped together

Good fit Use it to plan test cases from a story file and save the scenarios in a .feature file without creating Playwright test code.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/intai/story-flow/plan-bdd-scenarios
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.

Any agent
npx skills add Intai/story-flow --skill plan-bdd-scenarios
Clone the repo
git clone --depth 1 https://github.com/Intai/story-flow

Made for: Claude Code.

Or install story-flow, the plugin that ships this one along with the rest of its 5 skills, 4 commands, 5 agents.

Wrote 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.

agentmods badge for Plan BDD scenarios

README.md
[![agentmods](https://agentmods.dev/badge/skills/intai/story-flow/plan-bdd-scenarios/github.svg)](https://agentmods.dev/skills/intai/story-flow/plan-bdd-scenarios)
Your own site
<a href="https://agentmods.dev/skills/intai/story-flow/plan-bdd-scenarios"><img src="https://agentmods.dev/badge/skills/intai/story-flow/plan-bdd-scenarios/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.

agentmods 80×15 button for Plan BDD scenarios

Your own site · 80×15
<a href="https://agentmods.dev/skills/intai/story-flow/plan-bdd-scenarios"><img src="https://agentmods.dev/badge/skills/intai/story-flow/plan-bdd-scenarios.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 10 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 87 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00010 $0.00087
Opus 5 $0.00005 $0.00044
Sonnet 5 $0.00002 $0.00017
Haiku 4.5 $0.00001 $0.00009

Measured 11d ago against content hash bf4e5c487e40, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

Plan BDD scenarios 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 11d 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.

plugins/story-flow/skills/plan-bdd-scenarios/SKILL.md · 17 lines

What it actually says

Plan BDD scenarios

Instructions

  • While planning test scenarios, create ONLY detailed BDD scenarios in .feature files. Do not implement Playwright test code.

Example Inputs

  • Plan test scenarios according to @path/to/file-story.md
  • Plan BDD scenarios in @path/to/file.feature
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. 11d ago First seen · 17 lines · 10 tokens per session scan A bf4e5c487e40

Subscribe to this mod's changes

Plan BDD scenarios is a skill published in the GitHub repository Intai/story-flow (12 stars, last pushed today), licensed MIT. It adds 10 tokens to every session and 87 once invoked, about $0.0001 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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