How it works

A workspace your AI can read. A workspace you still control.

Harbor stores your knowledge in Markdown and SQLite — readable by humans and AI alike. Every proposed change surfaces as a reviewable diff before it touches your data.

The signature

See the change before it's saved.

AI changes are shown as paired before/after diffs — never inline strikethrough, never silent. Approve, reject, or undo any hunk. Harbor records who proposed what, when, and why.

Projects / AI Knowledge Base — kickoff planline 47Pending

Why: Implied from the kickoff conversation. Kari needs the structured block schema before her Thursday design review.

Before

(empty)

After
:::task
id: task_01HY8Z…
title: "Send the structured block schema to Kari"
due: 2026-05-14
project: ai-knowledge-base
:::
Proposed by Harbor · 2 min ago
What Harbor does

Five things, done quietly.

Keep what matters.

One calm place for notes, plans, ideas, people, projects, tasks, and preferences. Written in Markdown, stored as your own files.

Projects7 items
AI Knowledge Base — kickoff plan2h ago
Self-host planYesterday
Launch planMay 9
Migration to PostgresMay 7

Make knowledge usable.

Harbor doesn't just store information. It structures it — people, tasks, preferences — so AI tools can search, understand, and update it reliably.

# Kari Nordmann

:::person
id: person_01HY8Z4KTSV4RRFFQ69G5FAV
name: Kari Nordmann
relationship: Friend
birthday: 1990-04-12
:::

## Preferences

| Topic | Value | Source |
|---|---|---|
| Meetings | Async written reviews | User note |

Stay in control.

Every AI write becomes a reviewable patch. Approve, reject, or undo — per hunk, per agent, per folder. No silent edits, ever.

Review changes3 pending
New task in AI Knowledge Base2m
Updated preference for Kari8m
Status change · Migration to Postgres1h

Built to last.

Plain Markdown on disk. SQLite for structure. Export everything, anytime. Your knowledge stays readable and yours — not trapped inside a model's memory.

Export workspace.zip
/workspace/
harbor.sqlite — structured state
markdown/ — readable .md files
Projects/AI Knowledge Base.md
People/Kari Nordmann.md
attachments/
audit.log

Works with your tools.

Harbor speaks MCP — the open protocol AI tools use to talk to other systems. Connect calendars, mail, and code repos; let ChatGPT, Claude, and other clients search your Harbor directly.

Connected tools3 active
GmailConnected
Google CalendarConnected
GitHubConnected
Add Linear, Slack, Notion…

A safer home for your knowledge.

Harbor is in private beta. Free during beta — legacy users keep free hosted access after launch.

How Harbor works — Private knowledge for people and AI | Harbor