Eidos

Eidos File · An open specification

An open format. Local-first. A file-based spreadsheet.

Eidos File puts structured data, relations, formulas, and views into one portable SQLite file. Edit it directly, connect it to your own app, or let an AI agent work safely. No platform lock-in, and nothing has to be uploaded.

Download Try it in your browser ↗ Run locally with CLI ↓

Get started

Try Eidos your way.

Start without installing anything, use a complete local Space, or launch the editor from your terminal. Every path works with an Eidos File you keep.

01

For humans

Open one file instantly, work in a complete local Space, or run the shared web editor locally from the CLI.

01

Eidos Lite

The primary Eidos desktop app. Turn an ordinary folder into a local-first Space for .eidos files, version history, and optional Sync.

02

Web Editor

Open and edit a local .eidos file in your browser. No account, no install, and nothing uploaded.

03

Local Web Editor

Install the standalone CLI, create an Eidos File, and open the shared editor on localhost. Available on macOS, Linux, and Windows.

Create and open tracker.eidos 

eidos create tracker.eidos
eidos serve tracker.eidos --open
04

Eidos Desktop Legacy

The original all-in-one desktop app, preserved for existing users and maintenance. New users and new development should start with Eidos Lite.

02

For agents & automation

Install the machine boundary and its matching workflow. The CLI executes; the Skill teaches the agent how to use it safely.

01

Eidos CLI

The structured machine interface for revisions, exact matching, typed mutations, JSON output, and validation.

macOS and Linux 

curl -fsSL https://download.eidos.space/cli/install.sh | sh

Windows PowerShell 

irm https://download.eidos.space/cli/install.ps1 | iex
02

Eidos Skill

A version-matched workflow that teaches supported coding agents to use context, apply, validation, and Graft review or recovery safely. 

npx skills add \
  https://github.com/mayneyao/eidos/tree/cli-v0.36.0/skills/eidos \
  --skill eidos -g

Built to stay portable

One file, many ways to work.

Use Eidos from the desktop app, browser, command line, or a coding agent. They all work with the same .eidos file you keep, so changing tools does not mean moving your data.

Desktop · Browser · CLI · Agent → one .eidos file

  1. 01

    Open Eidos File format

    portable file

    Defines how tables, fields, views, and file links are stored so different tools can read and edit the same file.

    read the spec ↗
    v1.0
  2. 02

    Eidos File Runtime

    shared data rules

    Keeps field types, formulas, relations, and edits consistent whether a change comes from the editor or automation.

    npm ↗
    v1.0
  3. 03

    Shared Eidos editor

    human editing

    Provides the same tables and views in the Web Editor, Eidos Lite, and the local editor launched by the CLI.

    try it in your browser ↗
    beta
  4. 04

    eidos CLI

    automation

    Lets scripts and agents inspect or update a file with checks that reject stale or invalid changes.

    install ↗
    v0.36
  5. 05

    Eidos Skills

    agent guidance

    Shows compatible coding agents how to use the CLI carefully and review their work before keeping it.

    choose an agent ↗
    growing set
  6. 06

    Graft

    version history

    Keeps a local history of changes so you can review, branch, or restore a file.

    graft.eidos.space ↗
    v0.6
  7. 07

    Eidos Lite · Eidos Sync

    desktop & optional sync

    Eidos Lite organizes your local files. Eidos Sync carries them across your own devices only when you choose it.

    explore ↗
    Lite · active

Optional service

Local first. Sync when you need it.

Eidos does not turn file ownership into a subscription. Every local tool works on its own; Sync only adds hosted continuity across devices.

Local-first core

Eidos File and local tools

Create, edit, automate, and version files you control. No account or hosted service is required.

$0 forever

Eidos Sync · Beta

Hosted continuity

Official Graft Remote with 10 GB account-wide storage and unlimited personal devices under reasonable use.

$5 / month

$49 / year

Your local files remain independent before, during, and after a subscription.

See Sync pricing →