Reduce

by agenticnotetaking

Reduce is an AI Engineering skill for Claude Code, published by agenticnotetaking in arscontexta.

3.5K stars219 forkson agenticnotetaking/arscontextaAdded 2026/08/16Repository updated 2026/02/24

View source on GitHub Download repo ZIP

claude-codeclaude-code-pluginknowledge-baseknowledge-managementmarkdownsecond-brain

Install in seconds

Install Reduce

Copy Reduce 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/agenticnotetaking/arscontexta/tree/main/skill-sources/reduce ~/.claude/skills/reduce

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/agenticnotetaking/arscontexta.git

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

In this catalog

Source file: skill-sources/reduce/SKILL.md in agenticnotetaking/arscontexta
Installs to: ~/.claude/skills/reduce
Collection: One of 25 skills cataloged from this repository
Category: AI Engineering — 2451 skills

What Reduce does

Reduce extracts structured knowledge from source material into atomic, retrievable notes. Use it when triggered by /reduce, "extract insights", or when processing inbox items and handoff queues to externalize reasoning and evidence.

Reduce is cataloged under AI Engineering on DirSkills. Reduce comes from a repository tagged claude-code, claude-code-plugin, knowledge-base, knowledge-management and markdown.

Documentation

README

Excerpt

Runtime Configuration (Step 0 — before any processing)

Read these files to configure domain-specific behavior:

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

Frequently asked about Reduce

What else does agenticnotetaking publish alongside Reduce?
Reduce is one of 25 skills that DirSkills catalogs from agenticnotetaking/arscontexta, the repository it ships in. Its siblings there include Add Domain, Ars Contexta Setup and Ars Contexta Tutorial. Each one is a separate skill with its own page in this directory, installs the same way Reduce does, and is maintained by agenticnotetaking in that same repository. The rest of the collection is listed on the agenticnotetaking/arscontexta page.
How does Reduce compare to other AI Engineering skills?
Reduce ranks #600 by stars among the 2451 AI Engineering skills in this catalog. The most-starred ones next to it are Architecture Decision Records, AI-First Engineering and Agentic OS. 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 Reduce against them. Open each page to compare what they document and how they install.