v1.0.0-rc.19desktop app · open source

An ontology is how that debt gets repaid: what your code means, written into one markdown folder. People read it; agents write it.

Download for Apple Silicon53.5 MB Watch the demo first

Download for Intel Download Windows x64 betaunsigned Open it in the browser

Signed and notarized by Apple · no Atlas backend

Version: v1.0.0-rc.19 · Aug 30, 2026
Requires: macOS 12 or later
DMG: 53.5 MB
SHA-256: 30543933…86a07a56

Demo

See it moving before you install anything

Select a concept to reveal its relations and evidence, then Codex follows the same map between two concepts.

44s, filmed in one pass. Nothing cut, nothing sped up, no sound.

Evidence

A few lines at the top of a file become the map

The map on the left reads this repository's own markdown folder. On the right is one file that is actually in it.

A file in this repository

docs/ontology/capabilities/mcp-server.md

kind: capabilitytitle: MCP Serverdomain: domains/agent-integrationelements: [elements/task-scoped-agent-brief-projection]path: mcp/srcdependencies: [capabilities/vault-ontology]display_en: AI Connection Server

These 7 lines become one node and one line on the map. The other 5 (ids and bookkeeping) are not shown.

What the agent reads

Name: AI Connection Server
Kind: Capability
Sits in: AI Agent Integration
Depends on: Vault Ontology Schema Authoring
Code: mcp/src

There are 92 files like this, and every line on the map comes from them.

Open this file

docs/ontology91 concepts · 131 relationsDrag to move itOpen your own folder in the app or the web version and you see your own numbers.

Agents

Use the coding agent you already have, inside the app

Atlas detects Claude Agent and Codex on this computer. Guarded in-app chat is currently available for Claude Agent; Codex remains available through MCP setup in its own app or terminal until Atlas can independently pause its MCP writes for review. No Atlas account or new API key is required.

In-app chat · current Atlas write flow

You

The payment feature leans on user auth; if auth goes down, payments go down with it

The agent's Atlas write request · review required before it runs

add_relation | "user note: the payment feature leans on user auth, so if
                auth goes down payments go down with it (2026-08-16)"add_relation | "user note: the payment feature leans on user auth, so if
                auth goes down payments go down with it (2026-08-16)"

✓ Approved once · one relation written into a markdown file in your folder

The agent you already use

Claude Agent for guarded in-app chat; Codex for external MCP connection. Atlas runs the local adapter or MCP child, while the coding agent itself may communicate with its provider.

ACP adapter · runs on your machine

Atlas reads flow. Atlas writes wait.

Atlas read tools proceed inside the selected folder. Every Atlas write pauses on an exact change review, and access outside the folder asks first.

Atlas read → allow · Atlas write → review

What remains is markdown

No Atlas account or backend. The files remain plain markdown on your disk.

git diff docs/ontology/

Agents write the code.People accumulate the cognitive debt.