21st21st.dev
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CreateOS SandboxNodeOps
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Related Products
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About
21st is a developer platform that provides the fastest way to add AI agents directly into applications. The platform offers an SDK that allows developers to define, deploy, and run AI agents with minimal infrastructure setup. Developers can integrate agents using popular frameworks such as Next.js, React, TypeScript, Python, and Node.js. 21st includes built-in features like chat interfaces, session history, tool execution, memory, and real-time streaming responses. The platform also manages backend components such as sandboxed execution environments, authentication, rate limits, and observability. With support for Claude Code and Codex runtimes, developers can build agents that interact with tools, files, and APIs securely. By handling infrastructure and deployment automatically, 21st enables teams to launch production-ready AI agents quickly.
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About
CreateOS Sandbox is a hosted compute service for developers building AI agents, code-execution platforms, and developer tools. It creates isolated Firecracker micro-virtual machines, each with its own Linux kernel, where teams can run untrusted or model-generated code. Developers can provision environments through a TypeScript SDK, command-line interface, MCP tools, or REST API, execute commands, and connect sandboxes through private networks. Sandboxes can be paused and resumed with guest state preserved, configured from reusable templates, and connected to customer-owned Amazon S3, MinIO, or Cloudflare R2 storage. Usage is metered per second for compute, memory, and disk; paused environments continue to incur memory and storage charges. The service offers EU and US regions, plus an enterprise option to run on customer infrastructure.
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Audience
Software developers, startups, and product teams that want a fast and scalable way to build and deploy AI agents inside their applications
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Audience
Developers and teams building AI agents, code-execution platforms, and developer tools.
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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API
Offers API
Not Supported
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API
Offers API
Supported
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Screenshots and Videos |
Screenshots and VideosNo images available
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Pricing
Free
Free Version
Supported
Free Trial
Not Supported
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Pricing
$0.03616363/vCPU/hour
Usage is billed per second: $0.03616363 per vCPU-hour, $0.01159025 per GiB-RAM-hour, and $0.0001584 per GB-hour of storage. There are no egress fees or minimums. Paused sandboxes incur memory and storage charges, but no vCPU charge. New accounts receive 500 free credits.
Free Version
Supported
Free Trial
Not Supported
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Reviews/
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Reviews/
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Company Information21st.dev
21st.dev/
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Company InformationNodeOps
Founded: 2023
United States
createos.sh/products/sandbox
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Alternatives |
Alternatives |
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Categories |
Categories |
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Integrations
Amazon S3
Not Supported
Cloudflare R2
Not Supported
Grok Bot
Supported
MinIO
Not Supported
Model Context Protocol (MCP)
Not Supported
React
Supported
Tailwind CSS
Supported
shadcn/ui
Supported
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Integrations
Amazon S3
Supported
Cloudflare R2
Supported
Grok Bot
Not Supported
MinIO
Supported
Model Context Protocol (MCP)
Supported
React
Not Supported
Tailwind CSS
Not Supported
shadcn/ui
Not Supported
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