Lumyr

Ask for a dashboard. Keep your data.

Lumyr is an open-source desktop app that turns a sentence into a working Streamlit dashboard. It connects straight to your warehouse, runs every query on your machine, and calls Claude with your own Anthropic API key.

There is no account, no backend, and no Lumyr server. Nothing routes through us, because there is no "us" in the request path.

Landing page · Releases · Contributing · MIT licensed

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What leaves your machine

Being precise about this, because it's the whole point:

Stays local	Sent to Anthropic under your key
Database credentials (OS keychain)	Your prompt
Your API key (encrypted via safeStorage)	Table and column names
Query execution and results	Rows the agent samples to verify its work
The generated dashboard

No telemetry endpoint, no sign-in, no usage metering. Crash reporting exists but is off unless you build with a SENTRY_DSN.

The agent is instructed to issue read-only queries. Give it a read-only database role anyway — an enforced permission is worth more than an instruction.

Install

Download a build from Releases, or run from source:

git clone https://github.com/gautamgupta0196/Lumyr
cd Lumyr && npm install

npm run prepare:python             # downloads a self-contained Python + dashboard deps

npm run dev

Requirements: Node 20+ and an Anthropic API key from console.anthropic.com.

On first launch, open Settings and paste your API key. It is encrypted with your OS key store and never written into the repo.

Data sources

BigQuery · PostgreSQL · Snowflake · Redshift · NetSuite · ODBC · CSV/Excel

How dashboards get built

Generation is handled by the open-source opencode agent, embedded and run locally. Lumyr gives it a local MCP bridge (electron/opencode/) so it can list your tables, read schemas, and run read-only queries while it writes the dashboard — then hands you the resulting app.py.

Development

npm run dev          # Vite dev server + Electron
npm run typecheck    # tsc --noEmit
npm run lint         # ESLint over src/ and electron/
npm run test:unit    # Vitest
npm run build        # production build via electron-builder

Architecture notes for contributors live in CLAUDE.md.

License

MIT — see LICENSE.