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Ai brain

Skill Ootto-AI/claude-content-skills/skills/ai-brain

Give Claude a permanent, searchable long-term memory using an Obsidian vault as the store. At the end of a session, summarize what mattered and save it as a Markdown note in your "AI Brain" vault; at the start of a session (or on demand), read back only the relevant past notes. Local markdown you own — connected via the Filesystem MCP. Trigger with "wrap up", "save this session", or "remember this".From its SKILL.md

Install
npx -y skills add Ootto-AI/claude-content-skills --skill ai-brain

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SKILL.md

4.2 KB, 932 tokens by cl100k_base, as published. Nobody here has run it

AI Brain — persistent memory for Claude via Obsidian

You maintain a long-term memory for the user in an Obsidian vault — a folder of Markdown notes the user owns on disk. The vault is the durable store; this skill is how you write to it and read from it. You reach the vault through the connected Filesystem MCP (read/write files in the vault folder). Notes live under an AI Brain/ folder; use Obsidian [[wikilinks]] and #tags so memories connect.

One-time setup: in Claude Desktop add the Filesystem connector pointed at your Obsidian vault (Settings → Developer → Edit Config). No browser automation, no login — it's just your local notes.

When the user says "wrap up" / "save this session" / "remember this" — SAVE

  1. Review the whole conversation. Pull out only what's worth remembering long-term:

    • Decisions made (and the reasoning / alternatives rejected)
    • Facts & context about the user, their project, their preferences
    • What was built / changed, and where it lives
    • Open questions and next steps (TODOs)
    • Anything they explicitly said "remember this" Ignore small talk, dead ends, and anything already saved.

  2. Write a structured Markdown note in this exact shape (Obsidian-friendly tags + links):

    # Session — <YYYY-MM-DD> — <3–6 word title>
#ai-brain #<topic> #<topic>
Related:: [[<other note>]], [[<project>]]
## Decisions
- <decision> — <why>
## Context / facts to remember
- <fact>
## Built / changed
- <what> (<where>)
## Open / next
- [ ] <todo>

    Keep it tight and skimmable — this is for future retrieval, not prose.

  3. Save it to the vault via the Filesystem MCP: write the note to AI Brain/<YYYY-MM-DD>-<slug>.md. If the AI Brain/ folder doesn't exist yet, create it first. Append-only — never overwrite a past session's note.

  4. Link it in. Add a one-line pointer to a AI Brain/MOC.md index (a map-of-content): - [[<YYYY-MM-DD>-<slug>]] — <one-line hook> so the brain stays browsable in Obsidian's graph.

  5. Confirm in one line: 🧠 Saved to your Obsidian vault — <title> (<n> decisions, <m> todos).

At session start, or when the user references the past — RECALL

  1. Before answering anything that depends on history ("what did we decide about X", "continue the project", "pick up where we left off"), search the vault: read AI Brain/MOC.md and grep the AI Brain/ notes for the topic + entities from the user's request (filename, #tags, body text).
  2. Open only the relevant notes — never load the whole vault. This is the point: pull a few hundred tokens of relevant context instead of re-pasting everything. Follow [[wikilinks]] to related notes.
  3. Briefly state what you recalled (📓 From your vault: …) before continuing, so the user sees the grounding. If nothing relevant is found, say so and proceed fresh.

Rules

  • One vault folder (AI Brain/), append-only — never overwrite past sessions.
  • Tag every note (#tags) and link it ([[…]] + the MOC) so search + the Obsidian graph have anchors.
  • Recall is retrieval, not reload: fetch the minimum relevant notes. That's what keeps token cost low on long-running projects.
  • Never invent memories. If the vault has no answer, say "not in memory yet."
  • It's the user's private vault on their disk — read/write only the AI Brain/ folder; don't expose it.

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What ships with it

Read from the repository

Just SKILL.md. No reference files, no scripts.

Gives 0 of the 12 instructions most note taking skills give in 932 tokens

Counted across 632 of the 857 authors here whose files we hold, read 2026-09-06

  • Use standard Markdown links for external URLsin 16 of 632, across 8 files
  • Use wikilinks for internal vault connectionsin 15 of 632, across 7 files
  • Embed content using the exclamation mark prefixin 14 of 632, across 6 files
  • Ask for clarification if the user request is ambiguousin 13 of 632
  • Add frontmatter properties at the top of the filein 12 of 632, across 4 files
  • Verify note renders correctly in reading viewin 12 of 632, across 4 files
  • Include a visual element on every slidein 11 of 632, across 5 files
  • Left-align body text and listsin 11 of 632, across 5 files
  • Maintain 0.5 inch minimum marginsin 11 of 632, across 5 files
  • Wrap formulas containing double quotes in single quotesin 11 of 632, across 5 files
  • Repeat one distinctive visual motif across all slidesin 10 of 632, across 4 files
  • Use 36pt or larger for slide titlesin 10 of 632, across 4 files

Said here and by no other author read

  • Review conversation for long-term memory items
  • Write structured Markdown notes for sessions
  • Save notes to the vault folder
  • Append a pointer to the index file
  • Confirm saving with a one-line summary
  • Open only relevant notes

Grouped from the skills themselves: near-identical wordings counted once, and counted by distinct author, so one author publishing three of these counts once. Length counted with cl100k_base; the agent that loads this file may tokenize it differently.

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