What languages does Windmill support?

TypeScript (Bun, Deno), Python, Go, Bash, PowerShell, Nushell, SQL (PostgreSQL, MySQL, MS SQL, BigQuery, Snowflake), REST/GraphQL, and any language via Docker.

How does dependency management work?

Windmill parses your imports and resolves packages from npm, PyPI, or Go modules. A lockfile is generated per script for reproducible execution.

Can I develop scripts locally?

Yes. Windmill has a CLI and VS Code extension. Scripts sync with GitHub or GitLab.

How do auto-generated UIs work?

Windmill generates a form from your function signature. Parameter types map to UI components: strings to text inputs, numbers to sliders, resource types to connection pickers.

Are scripts versioned?

Yes. Each save creates a new immutable version with a unique hash. You can view history, fork, or revert any version.

Can I self-host Windmill?

Yes. Windmill is open source and can be self-hosted, including air-gapped. Enterprise features require a paid plan.

Script editor

Code editor with built-in infrastructure

Every function you write gets a parameters UI, an API endpoint, triggers, one-click deployment, and monitoring out of the box.

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Write code, get infrastructure

Windmill provides a full-featured code editor in the browser where you write scripts like in a classic IDE. Built on Monaco, it includes LSP autocompletion, linting, and formatting.

From a single script, Windmill automatically generates the infrastructure to make it production-ready:

Auto-generated UI

API endpoint

Triggers

Instant testing

One-click deployment

Versioning

Dedicated workers

Monitoring

Write in any language

Write your logic in TypeScript (Bun, Deno), Python, Go, Bash, SQL, or 20+ other languages. Windmill handles dependencies under the hood: it parses your imports, resolves packages from npm, PyPI, or Go modules, and generates a per-script lockfile. Workers cache dependencies so execution stays fast.

Read the docs

Auto-generated UI

Scripts automatically get a form UI from their function signature. Useful for quick testing during development and for exposing scripts to operators as standalone tools, no frontend needed.

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Shared resources

Parameters typed as a resource show a dropdown of configured connections in the UI. Credentials are centrally managed, encrypted at rest, and injected at runtime. A database, API key, or OAuth2 connection is configured once and reused across any script that needs it.

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Real-time logs and instant testing

Scripts can be tested directly from the editor. Logs stream in real-time and results are displayed instantly.

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Integrated debugger

The integrated debugger for Python and TypeScript (Bun) supports breakpoints, step over, step into, step out, and continue controls. A variables panel shows live values in the current scope, and the console allows evaluating expressions while paused.

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Triggers

Any script or workflow can be triggered by schedules, webhooks, message queues, database changes, emails, and more.

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Schedules

Cron and visual cron builder

Webhooks

Sync and async HTTP triggers

Emails

Trigger on incoming emails

HTTP routes

Custom REST endpoints

WebSockets

Real-time bidirectional events

Postgres

CDC and row-level triggers

Kafka

Consume from Kafka topics

NATS

Subscribe to NATS subjects

SQS

AWS SQS queue consumer

MQTT

IoT and MQTT broker events

GCP Pub/Sub

Google Cloud Pub/Sub events

Native triggers

Nextcloud, Google Drive, Calendar

Auto-generated UIs

One-click run from the UI

CLI & API

Trigger from scripts or CI/CD

MCP

Trigger from LLM clients

Scheduled polls

Poll APIs on an interval

API endpoint for every script

Every deployed script is automatically exposed as a REST endpoint. Call any script programmatically with a simple HTTP request, authenticate with tokens, and integrate Windmill scripts into any external system or CI/CD pipeline without extra configuration.

Read the docs