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Getting started

Five minutes to your first wiki page, and who does the ingesting

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The daily loop, rules and templates, and each view
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Where your data lives, who can see it, how the system works
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Pricing, FAQ, contact
The LLM Wiki pattern
Where this comes from: Karpathy's original note, condensed

WikiBrain is a personal knowledge base in the cloud: you drop in articles, papers and PDFs, and an AI reads them, writes interlinked wiki pages, and keeps the index and the log up to date. You find sources, ask questions and judge; the bookkeeping is the AI's job. The approach comes from Andrej Karpathy's "LLM Wiki" (original), condensed on the LLM Wiki pattern page.

A 20-second tour: from pasting a URL to a wiki page appearing, then asking it a question.

Five-minute start

  1. After signing up, pick a template (choose General if unsure). It creates the schema/ rules, wiki/index.md and wiki/log.md.
  2. Press ＋ Add in the top bar → Paste URL and paste a link, or Upload file and drop a PDF. It lands in raw/ and the page shows the banner "This source has not been filed into the wiki yet (pending Ingest)".
  3. Press Auto-ingest this source in the banner. The first 10 runs of the trial need no key at all.
  4. Wait for the progress panel (usually 30 to 90 seconds). The left pane gains a summary page under wiki/, and index.md and log.md are updated. Read it and check the key points.
  5. Press Chat in the top bar and ask something, e.g. "what is the main argument of this paper?". The answer cites page paths.
  6. After the tenth run, decide who ingests: see "Who ingests" below.
Pending-ingest banner
The banner on a raw/ source: Auto-ingest this source, all N, Discuss first, Copy prompt.
Three-pane main screen
After ingesting: the three-layer tree, the wiki page, backlinks and versions.

Who ingests: three ways, pick one or combine

The agent needs a model to run on. All three ways produce identical pages; the Settings section "Connect an agent" is about exactly this. Neither yet? The first 10 trial runs are on us; decide afterwards.

Cursor, Claude Code
Settings → Connect Cursor (3 steps) creates an MCP token for mcp.json. No API key; the cost is part of your tool’s plan. On a source page press Copy prompt for Cursor and paste it into the chat.
Claude.ai, ChatGPT
No token: paste the MCP URL https://wikibrain.app/mcp into its connector settings, sign in and press Allow. Steps below.
Browser only (your own API key)
Enter a Claude API, OpenAI or OpenRouter key under Settings → AI provider, then press Auto-ingest on a source page; works from a phone. Billed by your provider, a few cents per run on a flash-class model.
Cursor reading and writing through MCP
Cursor: the agent calls list_folder and read_note over MCP and writes back to wiki/.
AI provider settings
Your own key: choose a provider, pick a model, enter the key.

Connect from Claude.ai or ChatGPT (connectors)

  1. Claude.ai: sidebar Customize → Connectors → Add (top right) → Custom connector → name it WikiBrain, paste https://wikibrain.app/mcp → Add. The first time you are sent to WikiBrain’s sign-in and consent page; press Allow. The connector settings then list the six tools (get_instructions, search_notes, read_note, create_note, update_note, list_folder); just ask in plain language in a chat.
  2. ChatGPT: Settings → Connectors → Advanced / Developer mode → Create → paste the same URL as the server URL, choose OAuth → Create. Custom MCP is available on some plans only.
  3. Once connected: “read get_instructions, then ingest raw/sources/xxx.md into the wiki” or “search the wiki for X and write it up as one page”.
Claude.ai add custom connector
Claude.ai: Customize → Connectors → Add → Custom connector, paste the MCP URL.
WikiBrain consent page
First connection: sign in to WikiBrain and press Allow.
The six tools in Claude.ai
The six tools in the connector settings, each with its own permission.
Using WikiBrain in a Claude.ai chat
Ask in the chat; the agent calls the tools to read and write this wiki.

Authorised connections appear in the Settings → Connect an agent table (marked OAuth) and can be revoked at any time; access tokens expire after 24 hours and clients renew for 90 days. The same MCP token also works as an API key for the REST API, see the guide.

Phone: add to home screen

WikiBrain is an installable web app (PWA); there is nothing to download from a store. iPhone: open wikibrain.app in Safari → Share → Add to Home Screen. Android: Chrome menu → Install app or Add to Home screen. It then opens full-screen with its own icon. When the connection drops you get an offline page; reading the whole knowledge base offline and offline quick notes belong to the next milestone (device copy).