Building

Building is a Quality skill for Claude Code, published by romiluz13 in cc10x.

164 stars25 forkson romiluz13/cc10xAdded 2026/09/08Repository updated 2026/08/03

agent-harnessclaude-codeclaude-code-plugincontext-engineeringharness-engineeringllm-agentsloop-engineeringorchestrationtest-honesty

Install in seconds

Install Building

Copy Building into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/romiluz13/cc10x/tree/main/plugins/cc10x/skills/building ~/.claude/skills/building

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/romiluz13/cc10x.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: plugins/cc10x/skills/building/SKILL.md in romiluz13/cc10x
Installs to: ~/.claude/skills/building
Collection: One of 21 skills cataloged from this repository
Category: Quality — 1897 skills

What Building does

Building writes production code with test-first discipline using RED-GREEN-REFACTOR, vertical slicing, and safe refactoring. Use it when implementing features or fixes that need reliable tests and code generation patterns.

Building is cataloged under Quality on DirSkills. Building comes from a repository tagged agent-harness, claude-code, claude-code-plugin, context-engineering and harness-engineering.

Documentation

README

Excerpt

Building (Code Generation + TDD)

Iron Law: NO PRODUCTION CODE WITHOUT A FAILING TEST FIRST.

Reference Files

Read only what's needed:

references/testing-patterns.md — test structure, isolation, naming; load when writing the first test of a cycle or a test feels awkward to structure
references/test-data-and-mocks.md — mock discipline, test data factories; load when a test needs fixtures/factories or you are about to mock anything
references/integration-and-live-proof.md — integration test guidance, live verification; load when the slice crosses a service/DB/API boundary or the plan names live proof

Test Process Discipline

This is the opening of the README. Read the full README on GitHub.

Frequently asked about Building

What else does romiluz13 publish alongside Building?
Building is one of 21 skills that DirSkills catalogs from romiluz13/cc10x, the repository it ships in. Its siblings there include Agent Common, Architecture and Cc10X Update. Each one is a separate skill with its own page in this directory, installs the same way Building does, and is maintained by romiluz13 in that same repository. The rest of the collection is listed on the romiluz13/cc10x page.
How does Building compare to other Quality skills?
Building ranks #1787 by stars among the 1897 Quality skills in this catalog. The most-starred ones next to it are Benchmark, Benchmark Optimization Loop and API Design Patterns. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Building against them. Open each page to compare what they document and how they install.