How do I install the Features skill?

Run npx skillmds@latest add nvidia-ai-blueprints/features in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Features safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Features?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Features free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Features?

NVIDIA-AI-Blueprints (@nvidia-ai-blueprints) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Features by nvidia-ai-blueprints — Agent Skill

Name: Features
Author: NVIDIA-AI-Blueprints

Features

Python backend development standards for FastAPI, SQLModel, pytest, Ruff, and Pyright. Use when writing or modifying backend code in src/merchant, src/payment, src/apps_sdk, agents, tests, API routes, services, models, or protocol logic.

File contents

Backend Feature Development

Use this skill for Python backend changes.

Workflow

Read AGENTS.md before coding.
Read the required specs listed in AGENTS.md for the affected protocol or feature area.
Read scoped AGENTS files for touched subtrees, such as src/merchant/AGENTS.md, src/apps_sdk/AGENTS.md, or src/agents/AGENTS.md.
Implement minimal, spec-aligned changes.
Add or update tests for new behavior, edge cases, and failure paths.
Run the relevant quality gates and report exact evidence.

Python Standards

Use type hints for public APIs and non-trivial logic.
Prefer explicit, readable code over clever abstractions.
Avoid side effects at import time.
Mock external services and I/O in tests.
Do not add secrets, credentials, or sensitive data.
Add comments only where they clarify non-obvious behavior.

CI Parity

Run these commands from the repo root before committing backend-related changes:

uv run ruff check src/merchant/ src/payment/ src/apps_sdk/ tests/
uv run ruff format --check src/merchant/ src/payment/ src/apps_sdk/ tests/
uv run pyright src/merchant/ src/payment/ src/apps_sdk/
uv run pytest tests/ -v --tb=short

Rules:

Do not commit if any required command fails.
If changes touch both backend and UI, run the UI CI parity commands in skills/ui/SKILL.md.
Targeted tests are fine while iterating, but full relevant checks are required before commit unless explicitly skipped with a reason.

Testing Standards

Name tests test_*.py.
Assert behavior, not implementation details.
Prefer fixtures over ad hoc setup/teardown logic.
Use parametrized tests for related cases.
Cover happy paths, edge cases, and failure paths when behavior changes.

Review Expectations

No commented-out code.
No TODOs without an issue reference.
No dead code.
No ignored warnings or silenced type errors unless justified.
Clear, descriptive function and variable names.

The work is incomplete if tests are missing for changed behavior, Ruff or type checks are unresolved, or code behavior conflicts with the required docs.

---name: featuresdescription: Python backend development standards for FastAPI, SQLModel, pytest, Ruff, and Pyright. Use when writing or modifying backend code in src/merchant, src/payment, src/apps_sdk, agents, tests, API routes, services, models, or protocol logic.---# Backend Feature DevelopmentUse this skill for Python backend changes.## Workflow1. Read `AGENTS.md` before coding.2. Read the required specs listed in `AGENTS.md` for the affected protocol or feature area.3. Read scoped AGENTS files for touched subtrees, such as `src/merchant/AGENTS.md`, `src/apps_sdk/AGENTS.md`, or `src/agents/AGENTS.md`.4. Implement minimal, spec-aligned changes.5. Add or update tests for new behavior, edge cases, and failure paths.6. Run the relevant quality gates and report exact evidence.## Python Standards- Use type hints for public APIs and non-trivial logic.- Prefer explicit, readable code over clever abstractions.- Avoid side effects at import time.- Mock external services and I/O in tests.- Do not add secrets, credentials, or sensitive data.- Add comments only where they clarify non-obvious behavior.## CI ParityRun these commands from the repo root before committing backend-related changes:```bashuv run ruff check src/merchant/ src/payment/ src/apps_sdk/ tests/uv run ruff format --check src/merchant/ src/payment/ src/apps_sdk/ tests/uv run pyright src/merchant/ src/payment/ src/apps_sdk/uv run pytest tests/ -v --tb=short```Rules:- Do not commit if any required command fails.- If changes touch both backend and UI, run the UI CI parity commands in `skills/ui/SKILL.md`.- Targeted tests are fine while iterating, but full relevant checks are required before commit unless explicitly skipped with a reason.## Testing Standards- Name tests `test_*.py`.- Assert behavior, not implementation details.- Prefer fixtures over ad hoc setup/teardown logic.- Use parametrized tests for related cases.- Cover happy paths, edge cases, and failure paths when behavior changes.## Review Expectations- No commented-out code.- No TODOs without an issue reference.- No dead code.- No ignored warnings or silenced type errors unless justified.- Clear, descriptive function and variable names.The work is incomplete if tests are missing for changed behavior, Ruff or type checks are unresolved, or code behavior conflicts with the required docs.

Frequently asked questions