.context: Skill for Claude Code

.claude/skills/new-domain/SKILL.md

new-domain is a skill for Claude Code from andrefigueira/.context. It costs 32 tokens per session (293 once invoked), scanned A, original, MIT.

A project-documentation procedure for adding a new domain folder under `.context`, with overview and implementation-pattern files. It also connects that domain to the project's navigation and task-specific guidance.

In plain words
What is it for?
Use it when documenting a new project domain, including its purpose, code patterns, decisions, trade-offs, and integration points.
Why use it?
It gives new documentation areas a consistent structure and records how they fit with the rest of the project.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter. Also seen: mentions CLAUDE.md; mentions AGENTS.md.

This is andrefigueira/.context's own configuration. It tells Claude Code how to work on .context itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything .context configures →

Reuse

Borrowing it

Nothing to install: this file belongs to andrefigueira/.context. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/andrefigueira/.context/main/.claude/skills/new-domain/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/andrefigueira/.context

Made for: Claude Code.

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-domain

README.md
[![agentmods](https://agentmods.dev/badge/skills/andrefigueira/.context/new-domain/github.svg)](https://agentmods.dev/skills/andrefigueira/.context/new-domain)
Your own site
<a href="https://agentmods.dev/skills/andrefigueira/.context/new-domain"><img src="https://agentmods.dev/badge/skills/andrefigueira/.context/new-domain/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 new-domain

Your own site · 80×15
<a href="https://agentmods.dev/skills/andrefigueira/.context/new-domain"><img src="https://agentmods.dev/badge/skills/andrefigueira/.context/new-domain.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 32 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 293 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 $0.00032 $0.00293
Opus 5 $0.00016 $0.00147
Sonnet 5 $0.00006 $0.00059
Haiku 4.5 $0.00003 $0.00029

Measured 11d ago against content hash 2ea2dc6f46d7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

new-domain 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.

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

What it actually says

Create a new .context/ domain folder for $ARGUMENTS.

Steps

  1. Create the directory .context/$ARGUMENTS/
  2. Create overview.md with this structure:
# Domain: [Name]
Brief description of what this domain covers.

## Overview
High-level description with context.

## Implementation Patterns
Code examples and standard approaches.

## Decision History & Trade-offs
Why choices were made, alternatives considered.

## Integration Points
How this domain connects to others.
  1. Create patterns.md if the domain has code patterns to document
  2. Update .context/substrate.md to add the new domain under "Core Domains"
  3. Add the domain to CLAUDE.md under "Task-Specific Context" if it needs task-specific file pointers
  4. Update AGENTS.md to add the domain under "Context Files by Task"

Rules

  • Follow existing domain structure (see .context/auth/ or .context/api/ as examples)
  • Use project-specific content, not generic best practices
  • Include decision rationale in every section
  • Keep files under 200 lines each
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 · 42 lines · 32 tokens per session scan A 2ea2dc6f46d7

Subscribe to this mod's changes

new-domain is a skill published in the GitHub repository andrefigueira/.context (253 stars, last pushed 4mo ago), licensed MIT. It adds 32 tokens to every session and 293 once invoked, about $0.0002 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.

Related

Other skills, from other repositories

systematic-debugging

Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.

obra/superpowers · 21 tokens

local-ai-agents

Build local-first AI agents that run entirely on a developer workstation with Microsoft Foundry Local and Qwen function-calling models. Covers Small Language Models (SLMs), the OpenAI-compatible local endpoint, sandboxed local tools, local RAG with Chroma, local MCP servers, hybrid cloud/local routing, and the…

microsoft/ai-agents-for-beginners · 200 tokens

next-cache-components-adoption

Turn on Cache Components in a Next.js app and resolve the blocking routes it surfaces. Use when the user wants to enable, adopt, or migrate to Cache Components, flip the cacheComponents flag, work through a flood of blocking-prerender / instant validation errors, run the cache-components-instant-false codemod, or…

vercel/next.js · 95 tokens

insight-error-page

Write or audit an insight-kind error page for the Next.js dev overlay. Use when creating a new errors/ .mdx page, auditing an existing one, or checking that a page matches the framework fix cards. Covers page structure, title alignment, FixCard cards with Copy prompt button, code snippets, terminology verification…

vercel/next.js · 83 tokens

next-cache-components-optimizer

Drive a Next.js route to instant navigation by setting up an agentic loop, under Cache Components / PPR, on initial load (hard navigation) and client-side navigation (soft navigation). Encode the goal as a failing @next/playwright instant() e2e and work it to green, one verified route at a time; the shipped test then…

vercel/next.js · 170 tokens

next-partial-prefetching-adoption

Turn on Partial Prefetching in a Next.js app and work through the insights it surfaces. Use when the user wants to enable or adopt Partial Prefetching, flip the partialPrefetching flag, opt routes in with export const prefetch = 'partial', audit Link prefetch={true} behavior, preserve existing prefetched UI with…

vercel/next.js · 103 tokens