Session Brain

by Ar9av

Session Brain is a Data skill for Claude Code, published by Ar9av in obsidian-wiki.

3.2K stars322 forkson Ar9av/obsidian-wikiAdded 2026/08/17+1% in starsRepository updated 2026/08/17

View source on GitHub Download repo ZIP

agent-skillsbrainknowledge-basellm-toolsobsidianobsidian-brainwiki

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Install Session Brain

Copy Session Brain 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/Ar9av/obsidian-wiki/tree/main/.skills/session-brain ~/.claude/skills/session-brain

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/Ar9av/obsidian-wiki.git

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

In this catalog

Source file: .skills/session-brain/SKILL.md in Ar9av/obsidian-wiki
Installs to: ~/.claude/skills/session-brain
Collection: One of 25 skills cataloged from this repository
Category: Data — 668 skills

What Session Brain does

Session Brain builds and maintains a searchable topic graph over agent session history by clustering transcripts and history-only sessions using local TF-IDF, then writes an interactive graph for exploration. Use when you want to survey what you've been working on, find stale topics, or see how topics connect.

Session Brain is cataloged under Data on DirSkills. Session Brain comes from a repository tagged agent-skills, brain, knowledge-base, llm-tools and obsidian.

Documentation

README

Excerpt

Session Brain

Builds a searchable topic graph over your agent session history. The output is a sidecar at ~/.claude/session-brain/ — the vault is never touched.

All the heavy lifting is deterministic Python in the obsidian-wiki CLI. Your only job is to name the clusters, which takes exactly one turn and requires reading no transcripts.

When to use which skill

Goal	Skill
Build or refresh the graph; survey topics	`session-brain` (this one)
Find and load a specific past session	`session-search`
Distil sessions into permanent vault pages	`wiki-history-ingest` / `claude-history-ingest`

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

Frequently asked about Session Brain

What else does Ar9av publish alongside Session Brain?
Session Brain is one of 25 skills that DirSkills catalogs from Ar9av/obsidian-wiki, the repository it ships in. Its siblings there include Claude History Ingest, Code Understand and Codex History Ingest. Each one is a separate skill with its own page in this directory, installs the same way Session Brain does, and is maintained by Ar9av in that same repository. The rest of the collection is listed on the Ar9av/obsidian-wiki page.
How does Session Brain compare to other Data skills?
Session Brain ranks #222 by stars among the 668 Data skills in this catalog. The most-starred ones next to it are Benchmark Methodology, Jupyter Notebook and Solana. 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 Session Brain against them. Open each page to compare what they document and how they install.