Dynamic Workers (3)

Last updated Oct 12, 2026 Spin up Workers at runtime to execute code on-demand in a secure, sandboxed environment.

Dynamic Workers let you spin up an unlimited number of Workers to execute arbitrary code specified at runtime. Use Dynamic Workers as a lightweight alternative to containers for securely sandboxing code you do not trust.

Dynamic Workers are the lowest-level primitive for spinning up a Worker, giving you full control over defining how the Worker is composed, which bindings it receives, whether it can reach the network, and more.

Get started

Deploy the Dynamic Workers Playground ↗︎ to create and run Workers dynamically from code you write or import from GitHub, with real-time logs and observability.

Deploy to Cloudflare

Use cases

Use Dynamic Workers when code needs to run quickly in a secure, isolated environment.

  • AI Agent "Code Mode": LLMs are trained to write code. Instead of supplying an agent with tool calls to perform tasks, give it an API and let it write and execute code. Save up to 80% in inference tokens and cost by allowing the agent to programmatically process data instead of sending it all through the LLM.
  • AI-generated applications / "Vibe Code": Run generated code for prototypes, projects, and automations in a secure, isolated sandboxed environment.
  • Fast development and previews: Load prototypes, previews, and playgrounds in milliseconds.
  • Custom automations: Create custom tools on the fly that execute a task, call an integration, or automate a workflow.
  • Platforms: Run applications uploaded by your users.

Features

Because you compose the Worker that runs the code at runtime, you control how that Worker is configured and what it can access.

  • Bindings: Decide which bindings and structured data the dynamic Worker receives.
  • Observability: Attach Tail Workers and capture logs for each run.
  • Network access: Intercept or block Internet access for outbound requests.
  • Limits: Enforce custom limits on the dynamic Worker's resource usage.
  • Durable Object Facets: Run dynamically-loaded code as a Durable Object with its own isolated SQLite storage.

Was this helpful?

YesNo

On this page

Dynamic Workers (3) - 图2Docs

{"@context":"https://schema.org","@type":"WebPage","@id":"https://developers.cloudflare.com/dynamic-workers/#page","headline":"Dynamic Workers","description":"Spin up isolated Workers on demand to execute code.","url":"https://developers.cloudflare.com/dynamic-workers/","inLanguage":"en","image":"https://developers.cloudflare.com/dynamic-workers/og.png?v=51a25a49ca35a178","dateModified":"2026-10-12","publisher":{"@type":"Organization","name":"Cloudflare","description":"One platform for your apps, agents, and workforce. Build, secure, and scale without managing infrastructure","url":"https://www.cloudflare.com/","sameAs":["https://github.com/cloudflare","https://www.linkedin.com/company/cloudflare","https://x.com/cloudflare"],"logo":{"@type":"ImageObject","url":"https://developers.cloudflare.com/logo.svg"},"address":{"@type":"PostalAddress","streetAddress":"101 Townsend St","addressLocality":"San Francisco","addressRegion":"CA","postalCode":"94107","addressCountry":"US"},"contactPoint":[{"@type":"ContactPoint","contactType":"Customer Support","url":"https://support.cloudflare.com/","availableLanguage":["English"]},{"@type":"ContactPoint","contactType":"Sales","url":"https://www.cloudflare.com/contact/","availableLanguage":["English"]}]},"isPartOf":{"@type":"WebSite","@id":"https://developers.cloudflare.com/#website","name":"Cloudflare Docs","url":"https://developers.cloudflare.com/"}}

description: Build durable, multi-step applications on Cloudflare Workers that automatically retry and persist state. title: Cloudflare Workflows image: https://developers.cloudflare.com/workflows/og.png?v=54a0a1b5a3c2e37f

Skip to content

Documentation Index
Fetch the complete documentation index at: https://developers.cloudflare.com/workflows/llms.txt
Use this file to discover all available pages before exploring further.