Eidos File · SQLite

A single-file relational spreadsheet, for you and your .

Prompt for your agent

Help me complete a structured-data task in a .eidos file. Set up Eidos first if needed.

Start by asking what I want to accomplish, which .eidos file to use—or whether to create one—and where any source data is located. Do not install software or modify files yet.

After I answer:

1. Run `eidos --version`.

2. If the command is unavailable, detect the operating system, explain that the official installer downloads and verifies the standalone Eidos CLI, and ask for confirmation before running one of these commands:

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

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

   If the current shell has not refreshed its PATH, locate the installed binary and continue using its absolute path.

3. Initialize the matching Eidos Skill in the directory containing the file:

   eidos self skill init --space "<directory>"

   Use `--global` only if I ask to enable it for all projects. If an existing Skill differs, do not overwrite it with `--force`; explain the conflict and ask me what to do.

   Then read the generated `.agents/skills/eidos/SKILL.md` and the references it requires for this task before continuing in the current session.

4. Use structured `eidos --json` operations to inspect the exact file context and current revision. Do not mutate yet.

5. Propose the smallest useful change, limited to the relevant tables, fields, relations, views, or rows, and wait for my confirmation.

6. After confirmation, use typed Eidos operations with the expected revision. Never write raw SQLite or Eidos internal tables directly.

7. Validate the result and summarize the file changed, previous and current revisions, exact changes, and validation result.

If you cannot run shell commands or access the installer, show me the exact next command and stop.

Tables, relations, formulas, and views live in one standard SQLite file. Use the same file from the desktop, browser, CLI, or an agent.

Download Eidos Open Web Editor ↗

Privacy by default · Open format · Standard SQLite

A personal library in Eidos on desktop, alongside the experimental iOS and Android apps — Desktop · Web · CLI | iOS and Android are experimental

Eidos Lite · Data ownership

Eidos is just a file. And like any other file, it's yours.

library.eidos sits in the same folder as notes.md and paper.pdf. No sign-in, no import, copy the whole thing anywhere. Own the file, control the data.

Name Date Modified Size

library.eidos Today at 10:15 AM 1.2 MB
interviews.eidos Today at 9:32 AM 840 KB
notes.md Yesterday at 5:44 PM 12 KB
paper.pdf Sunday at 2:12 PM 2.1 MB
covers Sep 8, 2026 at 4:20 PM 64 items
scripts Sep 3, 2026 at 11:05 AM 8 items

2 Eidos files · 2 documents · 2 folders · all on your own disk

Malleable Software

Make Eidos fit your work.

Your files at the center. Build views, actions, and workflows around them.

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.eidos

Your files. Your data.

Eidos Lite · Local version history

Review changes. Restore when needed.

Change	Row	_updated_at	Status	Rating
~	_id	−`2026-10-20T05:59:19.605Z` +`2026-10-20T05:59:20.554Z`	−`Watching` +`Finished`	−`3` +`5`
~	_id	−`2026-10-20T05:59:19.625Z` +`2026-10-20T05:59:20.569Z`	−`Watchlist` +`Finished`	−`null` +`5`
~	_id	−`2026-10-20T05:56:16.633Z` +`2026-10-20T05:59:20.584Z`	−`Watching` +`Finished`	−`4` +`5`
~	_id	−`2026-10-20T05:56:16.633Z` +`2026-10-20T05:59:20.600Z`	−`Watchlist` +`Watching`	−`null` +`4`
~	_id	−`2026-10-20T05:56:16.633Z` +`2026-10-20T05:59:20.615Z`	−`Watching` +`Finished`	−`4` +`5`
~	_id	−`2026-10-20T05:56:16.633Z` +`2026-10-20T05:59:20.630Z`	−`Watchlist` +`Watching`	−`null` +`4`

Interactive demo · One local history for files and data

Spark

Spark. A one-time purchase.

Support Eidos development and get early access to advanced features.

Discover Spark

Sync and sharing

Local first. Connected when needed.

Keep working locally. Sync your phone and computer directly over the same local network, use cloud sync between computers, or publish files to the web when you want to share.

Cloud service pricing →

01 · LAN sync

Your phone and desktop, connected directly.

Pair your Android or iOS app with Eidos Lite to sync files and changes over the same local network. No cloud account required; each device keeps a local copy you can use offline.

How to connect →

02 · Eidos Sync · Cloud

Change computers. Keep working.

Sync changes and history between computers with end-to-end encryption. Each computer works on its local files.

Explore Sync →

03 · Eidos Publish · Preview

Publish files to the web. Share them your way.

Set the address and access; Forms can also collect responses into your file.

Explore Publish →

Eidos File · SQLite

Structured data you can keep reading.

Every .eidos file is SQLite. Standard SQLite tools can read its real tables today or years from now.

01 · Create a file and table

eidos file new library.eidos \
  --table library --label-field title \
  --fields '[{"name":"title","type":"text"},{"name":"author","type":"text"}]'

02 · Add a row

eidos data mutate library.eidos \
  --table library \
  --expected-revision 1 \
  --insert '{"title":"Chaos: Making a New Science","author":"James Gleick"}'

03 · Read it with SQLite

sqlite3 -header -column library.eidos \
  'SELECT title, author FROM library;'

SQLite output

title                        author
---------------------------  ------------
Chaos: Making a New Science  James Gleick

Start working local-first.

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Free core local tools · No account required