Cloudflare Developer Docs
Explore guides and tutorials to start building on Cloudflare's platform
Powerful primitives, seamlessly integrated
Deploy with one command
Build and deploy serverless functions and full-stack apps on Cloudflare's global network. No servers to manage. No cold starts or region complexity.
npm create cloudflare@latest my-appThe AI inference platform
Run AI inference globally with one API call, build agents, and search across your data — no GPUs to manage, no capacity planning.
cf ai run @cf/meta/llama-3.1-8b-instruct --helpnpx wrangler ai modelsMake your database feel instant, everywhere
Serverless SQL, globally distributed key-value, and global database acceleration — query directly from Workers with no connection management.
cf d1 --helpnpx wrangler d1 create my-databaseBuild media pipelines without infrastructure headaches
Cloudflare Images helps teams build scalable, reliable media pipelines to store, optimize, and deliver images.
curl --request POST https://api.cloudflare.com/client/v4/accounts/$ACCOUNT_ID/images/v1Build with your favorite AI agent
Paste into any AI coding agent to install Cloudflare agent tooling:
Browse all agent setup guides
What's new
The latest features and improvements shipping across Cloudflare.
Set custom validity windows for RealtimeKit auth tokens
RealtimeKit participant auth tokens now accept custom start and end times, and you can revoke a single token without removing everyone from the meeting.
Add noise cancellation to web apps built on RealtimeKit
Filter background noise from participants' microphones in RealtimeKit web apps with the new @cloudflare/realtimekit-noise-cancellation package.
New hash functions — sha1(), md5(), and sha512()
Compute SHA-1, MD5, and SHA-512 hashes directly in Rules expressions with three new functions.
Cloudflare Tunnel extends URL normalization
cloudflared 2026.11.0 extends URL normalization to path parameters. New releases will turn normalization on by default from 2027-02-08.
GitHub automatically detects leaked Access service tokens
GitHub secret scanning detects exposed Access service tokens, and a consistent secret format supports custom detection rules in other tools.
Prioritize Web Assets operations with metric views
Compare and sort operations by traffic, errors, latency, response size, and security metrics.
Improved Request Routing to Durable Objects
Cloudflare has reduced duplicate connection work during Durable Object relocation lookups, which can reduce p99 latency for affected connections.
Hyperdrive raises limits for connections and configurations
Workers Paid customers can now create up to 100 Hyperdrive configurations and configure up to 1,500 origin connections per configuration.
Security that scales
Everything you need to secure applications, APIs, and infrastructure.
Public websites & apps
Protect your applications without sacrificing performance
Identify and block malicious payloads before they can compromise your application.
Harden your app with WAFEncrypt your site in minutes
Streamline TLS Certificate Management.
Set up SSL/TLSVerify visitors without CAPTCHA
Confirm web visitors are real and block unwanted bots without slowing down web experiences for real users.
Add Turnstile protectionCorporate and home networks
Securely connect origins with post-quantum encrypted tunnels
Outbound-only encrypted tunnels, no open ports.
Create a secure TunnelSecure internal applications with Cloudflare Access
Identity-first, quantum-safe access to private applications and infrastructure.
Set up Cloudflare AccessSecure Internet browsing without disruptions
Cloud-native Secure Web Gateway (SWG) that inspects browser traffic without disruption.
Create Gateway policiesFaster web performance
Accelerate websites and applications with Cloudflare CDN caching, image optimization, smart routing, load balancing, and web analytics.
Fast, reliable and resilient DNS queries
World's fastest authoritative DNS, consistently ranked #1 by DNSPerf; free, fully API-managed, DNSSEC supported.
Set up Authoritative DNSMinimize origin load and accelerate dynamic content
Intelligently manage traffic, optimize content delivery, and safeguard origin infrastructure.
Enable Smart ShieldDefault caching for static assets, with cache rules for full control
Caches content in 330+ cities worldwide, with instant purging and granular Cache Rules.
Set up Cache RulesAssess your site speed and apply recommended optimizations
Application delivery optimizations including minification, Brotli compression, Early Hints, and HTTP/3.
Improve your site speedTransform, optimize, and deliver images worldwide
Cloudflare Images handles format conversion, responsive sizing, and intelligent caching.
Optimize image deliveryUnderstand the performance of your web pages
Cloudflare Web Analytics collects Core Web Vitals and performance data from 100% of page views without cookies or sampling.
Track real user metricsConnect with Cloudflare
Find community, read the blog, and explore open source projects.
Join the conversation
Share ideas, answers, and code with the Cloudflare community.
View the source
Cloudflare contributes to the open-source ecosystem in a variety of ways, including:
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