Second Brain Query

by NicholasSpisak

Second Brain Query is an AI Engineering skill for Claude Code, published by NicholasSpisak in second-brain.

686 stars104 forkson NicholasSpisak/second-brainAdded 2026/08/23+1% in starsRepository updated 2026/04/07

View source on GitHub Download repo ZIP

agent-skillsaiknowledge-basellmmarkdownobsidianpersonal-wikisecond-brain

Install in seconds

Install Second Brain Query

Copy Second Brain Query 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/NicholasSpisak/second-brain/tree/main/skills/second-brain-query ~/.claude/skills/second-brain-query

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/NicholasSpisak/second-brain.git

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

In this catalog

Source file: skills/second-brain-query/SKILL.md in NicholasSpisak/second-brain
Installs to: ~/.claude/skills/second-brain-query
Collection: One of 4 skills cataloged from this repository
Category: AI Engineering — 2451 skills

What Second Brain Query does

Second Brain Query answers questions by searching and synthesizing information from a knowledge base wiki. Use it to explore what you know about a topic, compare ideas, or find linked pages.

Second Brain Query is cataloged under AI Engineering on DirSkills. Second Brain Query comes from a repository tagged agent-skills, ai, knowledge-base, llm and markdown.

Documentation

README

Excerpt

Second Brain — Query

Answer questions by searching and synthesizing knowledge from the wiki.

Search Strategy

1. Start with the index

Read wiki/index.md to identify relevant pages. Scan all category sections (Sources, Entities, Concepts, Synthesis) for entries related to the question.

2. Use qmd for large wikis

If qmd is installed (check with command -v qmd), use it for search:

qmd search "query terms" --path wiki/

This is especially useful when the wiki has grown beyond ~100 pages where scanning the index becomes inefficient.

Read the wiki pages identified by the index or search. Follow [[wikilinks]] to pull in related context from linked pages. Read enough pages to give a thorough answer, but don't read the entire wiki.

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

Commands Second Brain Query provides

Slash commands named in this skill’s SKILL.md, listed in the order they first appear.

/second-brain-ingest
/second-brain-lint

Frequently asked about Second Brain Query

What else does NicholasSpisak publish alongside Second Brain Query?
Second Brain Query is one of 4 skills that DirSkills catalogs from NicholasSpisak/second-brain, the repository it ships in. Its siblings there include Second Brain, Second Brain Ingest and Second Brain Lint. Each one is a separate skill with its own page in this directory, installs the same way Second Brain Query does, and is maintained by NicholasSpisak in that same repository. The rest of the collection is listed on the NicholasSpisak/second-brain page.
How does Second Brain Query compare to other AI Engineering skills?
Second Brain Query ranks #1747 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 Second Brain Query against them. Open each page to compare what they document and how they install.