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BDD Requirements Discovery · nwave-ai | DecimalAI

testingby nwave-ai

BDD Requirements Discovery

nwave-ai/nw-bdd-requirements

Source nwave-ai/nwave ↗License MIT

BDD requirements discovery methodology - Example Mapping, Three Amigos, conversational patterns, Given-When-Then translation, and collaborative specification

SkillScore100Maintained

On-demandOn-demand: invoked explicitly — never occupies your agent's context until called.

Product Management pack

Last verified 8/16/2026

What it changes

Passed 22 of 22 test cases with the skill, and 16 of 22 without it.

Without skill73%

With skill100%

Checks it passed that the model alone missed

Phase 3 is Adoption
Phase 2 is Definition
Create 2 to 3 examples per business rule

and 4 more in the full report

6 fixed16 passed either way0 still failing0 broke

Pass-rate lift: +27 pp
Tokens: +202%
Agent turns: 0%
Response time: -35%

Model gemini-3.6-flashMeasured 8/16/2026v122 of 22 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/nwave-ai-nw-bdd-requirements/SKILL.md https://app.decimal.ai/s/nwave-ai-nw-bdd-requirements/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add nwave-ai-nw-bdd-requirements, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/nwave-ai-nw-bdd-requirements/ and pins it in .decimal/skills.lock

decimalai skills add nwave-ai-nw-bdd-requirements

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/nwave-ai-nw-bdd-requirements/SKILL.md https://app.decimal.ai/s/nwave-ai-nw-bdd-requirements/SKILL.md

Raw file: /s/nwave-ai-nw-bdd-requirements/SKILL.md ↗ · machine-readable summary at /s/nwave-ai-nw-bdd-requirements.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 6 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 6

Prompt

When arranging user story cards in a User Story Mapping grid, what does the top horizontal row represent?

What was checked, without and with the skill
Checked	Without skill	With skill
Represent the complete end-to-end user workflow or minimum viable path	Missed	Passed

case-15 · gemini-3.6-flash · 8/16/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md317 linessingle file

BDD Requirements Discovery

"If you're not having conversations, you're not doing BDD." -- Liz Keogh

BDD discovers "what we don't know we don't know" through collaborative exploration with concrete examples, not tools or formats.

The Three Amigos

Three perspectives revealing each other's blindspots:

Problem Owner (PO, BA, Domain Expert): business need | acceptance criteria | domain knowledge
Problem Solver (Developer, Engineer): technical constraints | implementation complexity | technical edge cases
Skeptic (Tester, QA): failure modes | edge cases and boundaries | challenge assumptions

Session Structure (25-minute timebox)

Read user story aloud (2 min) -- shared context
Identify acceptance criteria/rules (8 min) -- "what must be true for done?"
Explore examples per rule (12 min) -- concrete scenarios, edge cases
Capture questions (ongoing) -- unknowns on red cards
Review and summarize (3 min) -- shared understanding check

If unmappable in 25 min: too large (split) | too uncertain (spike) | team needs practice.

Example Mapping

Four Card Types

Yellow: User Story (1 per session) | Blue: Business Rules/AC | Green: Concrete Examples | Red: Questions/Unknowns (blockers)

Visual Layout

[Yellow] User Story: Transfer money between accounts
  |
  +-- [Blue] Rule: Amount must not exceed source balance
  |     +-- [Green] $500 balance, transfer $400 -> succeeds
  |     +-- [Green] $500 balance, transfer $500 -> succeeds (boundary)
  |     +-- [Green] $500 balance, transfer $501 -> fails
  |     +-- [Red] What happens if balance changes during transfer?

Track record

Benchmark

22 / 22

test cases passed, vs 16 / 22 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

nwave-ai / nwave

nWave/skills/nw-bdd-requirements/SKILL.md

View on GitHub ↗

License MITImported 8/3/2026Version v1

More skills from the same source and nearby in the registry, with their headline benchmark lift.

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See it in action

What's inside

BDD Requirements Discovery

The Three Amigos

Session Structure (25-minute timebox)

Example Mapping

Four Card Types

Visual Layout

Track record

Benchmark

Adoption

SkillSafety

Source

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