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Feature Lifecycle Skill · notque | DecimalAI

productivityby notque

Feature Lifecycle Skill

notque/feature-lifecycle

Source notque/vexjoy-agent ↗License MIT

Feature lifecycle: design, plan, implement, validate, release. Phase-gated workflow.

SkillScore73Maintained

Automatic

Coding pack

Last verified 8/20/2026

What it changes

Passed 14 of 19 test cases with the skill, and 8 of 19 without it.

Without skill41%

With skill73%

Checks it passed that the model alone missed

Loads references/design.md
Loads references/shared.md
Loads references/release.md

and 5 more in the full report

7 fixed9 passed either way6 still failing0 broke

Pass-rate lift: +32 pp
Tokens: +28%
Agent turns: 0%
Response time: -54%

Model gemini-3.6-flashMeasured 8/20/2026v216 of 22 cases passed with skill · 19 comparable

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/notque-feature-lifecycle/SKILL.md https://app.decimal.ai/s/notque-feature-lifecycle/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add notque-feature-lifecycle, 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/notque-feature-lifecycle/ and pins it in .decimal/skills.lock

decimalai skills add notque-feature-lifecycle

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

curl -fsSL --create-dirs -o .claude/skills/notque-feature-lifecycle/SKILL.md https://app.decimal.ai/s/notque-feature-lifecycle/SKILL.md

Raw file: /s/notque-feature-lifecycle/SKILL.md ↗ · machine-readable summary at /s/notque-feature-lifecycle.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 7 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 7

Prompt

We just received a validated Architecture Change Handoff document targeting feature-lifecycle for the authentication migration. What is the immediate entry phase and file reference needed?

What was checked, without and with the skill
Checked	Without skill	With skill
Routes entry point to the DESIGN phase	Missed	Passed
Loads references/design.md	Missed	Passed

case-04 · gemini-3.6-flash · 8/20/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md87 lines9 files

Feature Lifecycle Skill

Phase-gated feature workflow: DESIGN > PLAN > IMPLEMENT > VALIDATE > RELEASE. Each phase must pass its gate before the next begins.

Phase Routing

Determine which phase to execute based on feature state:

If .feature/ exists, check current phase:
```
python3 ~/.claude/scripts/feature-state.py status
```
Route to the phase indicated by the state machine.
If no feature state exists, determine entry point from user intent:
- Validated Architecture Change Handoff targeting feature-lifecycle -> DESIGN; the design phase adopts it before approach work
- "design", "think through", "explore approaches" -> DESIGN
- "plan", "break down", "create tasks" -> PLAN (requires completed design)
- "implement", "execute plan", "start building" -> IMPLEMENT (requires completed plan)
- "validate", "quality gates", "check feature" -> VALIDATE (requires completed implementation)
- "release", "merge", "ship it" -> RELEASE (requires passed validation)
- "end to end", "full lifecycle", "from scratch" -> DESIGN (start from beginning)
Load the phase reference for the current phase:
- DESIGN: Read references/design.md
- PLAN: Read references/plan.md
- IMPLEMENT: Read references/implement.md
- VALIDATE: Read references/validate.md — run quality gate commands, do not reason about whether they would pass. Paste exit codes and output.
- RELEASE: Read references/release.md
- END-TO-END: Read references/pipeline.md
Follow the loaded reference exactly. Each reference contains the full phase instructions, gates, and checkpoints.

State Conventions

Read references/shared.md for directory structure, state management commands, context loading rules, and naming conventions. All state operations go through python3 ~/.claude/scripts/feature-state.py -- never manipulate state files directly.

Phase Ordering

Track record

Benchmark

14 / 19

test cases passed, vs 8 / 19 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 v5 — 8/17/2026

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

notque / vexjoy-agent

skills/process/feature-lifecycle/SKILL.md

View on GitHub ↗

License MITImported 8/17/2026Version v2Bundled 8 files

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

Ready to supercharge your AI agents?

See it in action

What's inside

Feature Lifecycle Skill

Phase Routing

State Conventions

Phase Ordering

Track record

Benchmark

Adoption

SkillSafety

Source

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