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Wasm in JavaScript

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AI(opens in a new tab)
AI Search(opens in a new tab)
Analytics Engine(opens in a new tab)
Analytics SQL binding
Assets
Browser Run(opens in a new tab)
D1(opens in a new tab)
Dispatcher (Workers for Platforms)(opens in a new tab)
Durable Objects(opens in a new tab)
Dynamic Worker Loaders
Environment Variables
Hyperdrive(opens in a new tab)
Images(opens in a new tab)
KV(opens in a new tab)
Media Transformations(opens in a new tab)
mTLS
Queues(opens in a new tab)
R2(opens in a new tab)
Rate Limiting
Secrets
Secrets Store(opens in a new tab)
Stream(opens in a new tab)
Vectorize(opens in a new tab)
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Workflows(opens in a new tab)

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HTTP
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Alarm Handler(opens in a new tab)
Connect Handler
Email Handler(opens in a new tab)
Fetch Handler
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Scheduled Handler
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assert
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crypto
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dns
EventEmitter
fs
http
https
net
path
process
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ReadableStream
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Get Started
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Full-stack application
Single Page Application (SPA)
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Worker script

Gradual rollouts(opens in a new tab)
HTML handling
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Migrate from Pages to Workers
Migrate from Netlify to Workers
Migrate from Vercel to Workers

Deploy an existing project

React + Vite
Astro
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Next.js
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Microfrontends
SvelteKit
Vike
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fate

Analog
Angular
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Nuxt
Qwik
Solid
Waku

Expo(opens in a new tab)

FastAPI
Flask
Hono

Agents SDK(opens in a new tab)
LangChain

Connect to databases
Analytics Engine(opens in a new tab)
Vectorize (vector database)(opens in a new tab)
Cloudflare D1(opens in a new tab)
Hyperdrive(opens in a new tab)

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Neon
PlanetScale
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Turso
Upstash
Xata

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Metrics and analytics
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OpenTelemetry export
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Workers Logs
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Tail Workers
Workers Logpush

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Custom spans
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Known limitations

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Breakpoints
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Investigate issues
Set up an automation

Sentry(opens in a new tab)

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Wrangler's unstable_startWorker()

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Write your first test
Recipes and examples
Configuration
Mock outbound requests
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Debugging
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Migrate to Vitest plugin
Migrate from Vitest 3 to Vitest 4
Migrate from Miniflare 2's test environments
Migrate from unstable_dev

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Get started
Configure the test harness
Prepare test state
Interact with Workers
Integrations

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Get Started
Writing tests

Compatibility Dates
Fetch Events
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Attaching a Debugger
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Cache
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Migrate from Wrangler v3 to v4
Migrate from Wrangler v2 to v3

1. Migrate webpack projects
2. Update to Wrangler v2

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Workers
General commands
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Workers for Platforms
Workflows

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Get started
Tutorial - React SPA with an API

API
Static Assets
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Migrating from wrangler dev
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Vite Environments
Cloudflare Environments
Non-JavaScript modules
Programmatic configuration

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Examples(opens in a new tab)

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Examples(opens in a new tab)

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The Basics
How Python Workers Work
Foreign Function Interface (FFI)
Standard Library
Examples

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Django
FastAPI
Flask
Langchain

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Supported crates

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Pricing
Limits
Choose a data or storage product
Betas
Deploy to Cloudflare buttons
Claim deployments (temporary accounts)
Built with Cloudflare button
Known issues
Workers for Platforms(opens in a new tab)
Infrastructure as Code (IaC)

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Workers (Historic)
Wrangler(opens in a new tab)

Cloudflare Workers

Glossary

How the Cache works
How Workers works
Migrate from Service Workers to ES Modules
Protocols
Security model

AI & agents

Create full-stack applications deployed to Cloudflare Workers with AI & agent frameworks.

Agents SDK
LangChain

Edit on GitHub

Adapted from developers.cloudflare.com/workers/framework-guides/ai-and-agents by Cloudflare, Inc., licensed under CC BY 4.0. Changes were made: this page is re-rendered from the original's source.

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