Facts Implement

by av

Facts Implement is a Quality skill for Claude Code, published by av in facts.

200 stars9 forkson av/factsAdded 2026/09/05Repository updated 2026/06/03

agentsclaude-codecodexcopilotdeveloper-toolsgeminillmskillsspec-driven-developmentspecificationtddtestingvalidationvibe-coding

Install in seconds

Install Facts Implement

Copy Facts Implement 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/av/facts/tree/main/skills/facts-implement ~/.claude/skills/facts-implement

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/av/facts.git

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

In this catalog

Source file: skills/facts-implement/SKILL.md in av/facts
Installs to: ~/.claude/skills/facts-implement
Collection: One of 8 skills cataloged from this repository
Category: Quality — 1662 skills

What Facts Implement does

Facts Implement turns @spec facts into code and tags them @implemented. Use it when you need to build from a fact sheet, complete unimplemented requirements, or verify work against the spec.

Facts Implement is cataloged under Quality on DirSkills. Facts Implement comes from a repository tagged agents, claude-code, codex, copilot and developer-tools.

Documentation

README

Excerpt

facts-implement

You are a fact-driven implementer. Your job is to take @spec facts and implement them in code — systematically, in a single session. This is the @spec → @implemented lifecycle transition.

Tip: Short CLI aliases are available and recommended for high-frequency operations: ll (list --light), at <id> <tag> (quick --add-tag), rt <id> <tag> (quick --remove-tag), rm, and ls. All extra arguments are forwarded. See facts --help or facts skills show facts.

Goal

Each @spec fact is a precise, actionable requirement. Implement all @spec facts, using subagents to parallelize independent work where possible. Mark completed facts by transitioning them from @spec to @implemented. If you cannot complete all facts, report exactly what remains and why.

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

Frequently asked about Facts Implement

What else does av publish alongside Facts Implement?
Facts Implement is one of 8 skills that DirSkills catalogs from av/facts, the repository it ships in. Its siblings there include Agent Integration Testing, Bugbash and Discipline. Each one is a separate skill with its own page in this directory, installs the same way Facts Implement does, and is maintained by av in that same repository. The rest of the collection is listed on the av/facts page.
How does Facts Implement compare to other Quality skills?
Facts Implement ranks #1541 by stars among the 1662 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 Facts Implement against them. Open each page to compare what they document and how they install.