PANDO — fewer ways to lose a thought

Notes apps die the same way every time: capture gets slower than forgetting. Pando is the version with fewer moving parts and fewer ways to lose the plot — plain markdown files, links that make themselves, a garden view where your vault grows as a fern, and an MCP socket so Claude can actually use what you know. Zero dependencies. Nothing leaves your machine unless you explicitly turn on Claude enrichment. Built by one operator (HoldFern) who kept losing good ideas to bad capture.

Free software under AGPL-3.0 — see LICENSE. © 2026 Matt Barber.

Quick start (Windows)

1. EXTRACT the zip first. Do not run anything from inside the archive — Windows will happily show you the files but nothing can run in there. Right-click the zip, Extract All, e.g. to Documents\Pando.

2. Install Node.js LTS (once). In an admin terminal: winget install OpenJS.NodeJS.LTS — or get the LTS installer from https://nodejs.org. Pando is zero-dependency, but it is a Node app; Node is the only thing it needs. Close and reopen your terminal afterward.

3. Double-click start.bat in the extracted folder. It checks for both of the above and tells you exactly what is missing if something is off.

4. Open the URL it prints — it contains your one-time session key and sets a secure cookie. After that, plain http://127.0.0.1:7423 just works; bookmark it.

No npm install, no build step, no accounts. To use Pando from another browser or after clearing cookies, use the printed URL again (the key lives in .brain/session.token; delete that file to rotate it).

Related MCP server: obsidian-mcp

The 60-second tour

Archive replaces delete: nothing in Pando is ever destroyed.

Your data, concretely

• vault/ — your notes. Plain markdown. This folder is your brain; everything else is derived. It opens fine in Obsidian, VS Code, anything.

• .brain/history/ — automatic snapshots of every overwritten version.

• .brain/activity.jsonl — your open/edit/capture timeline (powers resurfacing).

• .brain/config.json — settings, including the optional Claude API key.

• .brain/session.token — your local session key (delete to rotate).

Backup = copy the folder. Sync = put it in OneDrive/Syncthing/git — it's just files.

Claude integration (optional, two ways)

1. Enrichment in the UI — add an Anthropic API key in Settings (stored only in .brain/config.json, sent only to api.anthropic.com). Unlocks per-note ai·summary, ai·tags, ai·links and "Ask Claude to prioritize" in Consolidate. Written and code-reviewed but not live-tested in this build (needs your key).

2. MCP — make Claude a client of your brain. Add to claude_desktop_config.json (Claude Desktop → Settings → Developer):

{
  "mcpServers": {
    "pando": {
      "command": "node",
      "args": ["C:\\Users\\YOU\\Documents\\pando\\mcp-server.js"]
    }
  }
}

Claude gets 8 tools: search_notes, read_note, write_note, capture_thought, build_context, related_notes, consolidation_report, list_recent. Prefer Claude not write to your vault? Set env PANDO_MCP_READONLY=1.

Security posture (v0.2 hardening)

• Binds 127.0.0.1 only — hardcoded, not configurable. Remote access is a future feature with real auth, not a flag.

• Session auth: random persistent token → HttpOnly SameSite=Strict cookie; Authorization: Bearer <token> for scripts; timing-safe compares.

• Host-header allowlist — blocks DNS-rebinding attacks from web pages.

• JSON-only writes — blocks cross-site form/text CSRF.

• CSP with per-boot nonce on the UI, X-Frame-Options: DENY, nosniff.

• Path traversal blocked at one choke point; 2 MB note / 2.5 MB request caps.

• Zero dependencies = the supply chain is Node itself. No telemetry, ever.

Details and reporting: SECURITY.md. Run the 20-check battery yourself: node scripts/smoke.js.

Documentation

Full guides live in docs/ — install, user manual, architecture, data & security, Claude/MCP integration, public-launch security, maintenance, and the roadmap. Start at docs/00-START-HERE.md.

FAQ

• Change the port? set PANDO_PORT=8000 before starting.

• Move the vault elsewhere? Set PANDO_ROOT=C:\path\to\folder.

• Edit notes in other apps? Yes — Pando detects external changes and reindexes.

• Phone? Roadmap (BLUEPRINT.md). The vault syncs anywhere as plain files today.

• Extend it? Drop a JS file in plugins/ (see plugins/README.md) or script the JSON API — the UI has no special powers. Contributions: CONTRIBUTING.md.

See BLUEPRINT.md for architecture and the upgrade roadmap.