new-feature

new-feature is a skill for Claude Code, Codex from fpindej/netrock. It costs 11 tokens per session (469 once invoked), scanned A, original, MIT.

A workflow for building a complete application feature from its database entity through its API and frontend page.

In plain words
What is it for?
It helps create database entities and migrations, services, API endpoints, validation, tests, generated frontend types, and the related page.
Why use it?
It coordinates the layers of a full-stack feature so the data model, server behavior, and user interface are added consistently.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/fpindej/netrock/new-feature
Any agent
npx skills add fpindej/netrock --skill new-feature
Clone the repo
git clone --depth 1 https://github.com/fpindej/netrock

Made for: Claude Code, Codex.

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 new-feature

README.md
[![agentmods](https://agentmods.dev/badge/skills/fpindej/netrock/new-feature.svg)](https://agentmods.dev/skills/fpindej/netrock/new-feature)
Your own site
<a href="https://agentmods.dev/skills/fpindej/netrock/new-feature"><img src="https://agentmods.dev/badge/skills/fpindej/netrock/new-feature.svg" alt="Measured on agentmods" height="20"></a>
Per session 11 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 469 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00011 $0.00469
Opus 5 $0.00005 $0.00234
Sonnet 5 $0.00002 $0.00094
Haiku 4.5 $0.00001 $0.00047

Measured 5d ago against content hash 7b82d7d7fa56, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

new-feature 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 5d 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.

.claude/skills/new-feature/SKILL.md · 42 lines

What it actually says

Creates a full-stack feature: backend entity through to frontend page.

Infers everything possible from the feature description. Asks only when genuinely ambiguous (multiple valid designs with different tradeoffs). Prefers conventions from existing features.

Steps

This chains entity -> service/API -> frontend. Commit atomically after each logical unit.

Backend - Entity (see /new-entity):

  1. Domain: entity + enums + error messages
  2. Infrastructure: EF config + DbSet + migration
  3. Verify: dotnet build src/backend/MyProject.slnx - loop until green
  4. Commit: feat({feature}): add {Entity} entity and EF configuration

Backend - Service & API (see /new-endpoint):

  1. Application: I{Feature}Service + Input/Output DTOs
  2. Infrastructure: {Feature}Service (internal) + DI extension
  3. WebApi: controller + request/response DTOs + mapper + validators + Program.cs wiring
  4. Write tests: component, API integration, validator
  5. Verify: dotnet test src/backend/MyProject.slnx -c Release - loop until green
  6. Commit: feat({feature}): add {Feature} service and API endpoints

Frontend (see /new-page):

  1. Regenerate types: cd src/frontend && pnpm run api:generate
  2. Add type alias to src/frontend/src/lib/types/index.ts
  3. Create components in $lib/components/{feature}/ with barrel index.ts
  4. Create page in routes/(app)/{feature}/
  5. Add i18n keys to the correct feature file in all locale directories
  6. Add sidebar navigation entry and command palette entry (both with permission if guarded)
  7. Verify: cd src/frontend && pnpm run format && pnpm run lint && pnpm run check - loop until green
  8. Commit: feat({feature}): add {feature} frontend page

Always: If build/check fails, read the error, fix it, re-run. Never stop to report a fixable error.

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. 5d ago First seen · 42 lines · 11 tokens per session scan A 7b82d7d7fa56

Subscribe to this mod's changes

new-feature is a skill published in the GitHub repository fpindej/netrock (231 stars, last pushed 4d ago), licensed MIT. It adds 11 tokens to every session and 469 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.