Cloudflare Brings Secure, Scalable Sandboxes to Claude Managed Agents

Key Terms

v8 isolate-based sandboxes technical

A v8 isolate-based sandbox is a software mechanism that runs pieces of JavaScript code in separate, tightly controlled mini-environments provided by the V8 JavaScript engine. Think of it as running each script inside its own locked room so it cannot touch other parts of the system; this reduces the chance that buggy or malicious code can cause crashes, data leaks, or security breaches. For investors, use of these sandboxes signals stronger product security and lower operational and regulatory risk, which can protect revenue and reputation.

zero-trust connectivity technical

Zero-trust connectivity is an approach to computer and network security that treats every user, device, and connection as untrusted until it is continuously verified, rather than assuming anything inside a network is safe. For investors, it matters because adopting zero-trust can materially reduce the chance and cost of data breaches, help meet regulatory requirements, protect customer trust and revenue streams, and influence capital spending and legal or insurance exposure much like an upgraded lock system lowers the risk of a break-in.

post-quantum ready encryption technical

Encryption designed to remain secure even if powerful quantum computers become available; it uses algorithms that are not easily broken by the new kinds of calculations quantum machines can perform. For investors, it signals that a company is protecting sensitive data, reducing future legal, operational and reputational risks—like swapping ordinary locks for ones built to resist a new kind of master key—helping preserve value and regulatory compliance as technology evolves.

audit trail technical

A chronological record that shows who performed each action, when it happened, and what was changed across financial systems and documents; it logs transactions, edits, approvals, and access so every step can be traced. For investors, an audit trail matters because it boosts trust and accountability—helping detect errors or fraud, supporting audits and regulatory checks, and making financial reporting and due diligence clearer, like a transaction-level receipt for a company’s records.

sandboxes technical

Sandboxes are controlled testing environments set up by regulators or platforms where companies can trial new products, services, or technologies with relaxed rules and close oversight. Like a supervised playground where builders can test ideas without the full risk of breaking the neighborhood, sandboxes matter to investors because they can speed a product’s path to market, reduce early regulatory risk, and signal whether new offerings are likely to scale or face larger compliance hurdles.

workers developer platform technical

A workers developer platform is a cloud service that lets programmers deploy small pieces of code—called "workers"—to run automatically and close to end users, without managing servers. Think of it like food trucks placed around a city instead of one central restaurant: it delivers faster responses, lower operating overhead and easier scaling. For investors, this can reduce costs, speed product rollouts and enable companies to handle spikes in user activity more efficiently.

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New integration combines Anthropic’s intelligence with Cloudflare’s global network to provide a highly secure and scalable foundation for autonomous AI

SAN FRANCISCO--(BUSINESS WIRE)--

Cloudflare, Inc. (NYSE: NET), the leading connectivity cloud company, today announced it is collaborating with Anthropic to launch Cloudflare Environments for Claude Managed Agents. This integration allows organizations to run core agent loops on the Claude platform while using Cloudflare’s global network and Workers developer platform to execute code, secure private connections, and provide agents with specialized tools. By giving developers a secure and massively-scalable environment, Cloudflare is helping ensure that the next generation of AI assistants can be built quickly, securely, and at a global scale.

For AI agents to be truly useful in the workplace, they need to be more than just smart — they need to be secure and scalable. Cloudflare Environments for Managed Agents solves this by providing the foundation these agents need to work safely within an organization. A Workers-based control plane spins up secure sandboxes for every agent session, and security and compliance controls are applied by default. This enables businesses to maintain strict security protocols while scaling their AI initiatives from a single prototype to millions of users without infrastructure bottlenecks.

“The true potential of AI agents will only be realized when they can safely interact with the real world at massive scale,” said Matthew Prince, co-founder and CEO of Cloudflare. “By partnering with Anthropic, we are giving developers the ability to execute code and access private data securely—backed by the speed and scale of our global network. Now, businesses can focus on building the most innovative AI applications on the planet."

Cloudflare Environments for Claude Managed Agents enables developers to:

• Scale globally with diverse runtimes: On Cloudflare Workers, developers can choose between full Linux-based microVMs for complex tasks or lightweight V8 Isolate-based sandboxes that offer millisecond boot times, allowing agents to scale quickly to meet massively-scaled workloads while keeping resource costs low. This makes agentic workloads possible for any large-scale consumer Internet company.
• Secure sensitive data with Zero-Trust connectivity: Protect agents with advanced egress controls and Cloudflare Mesh. This allows agents to connect to internal, private services via post-quantum ready encryption, designed to keep sensitive data off the public Internet.
• Audit agent behavior with native observability: With Cloudflare, agents also come equipped by default with built-in tools to provide an audit trail and session recordings, ensuring actions the agent takes are secure and compliant.
• Extend agent capabilities with customizable frameworks: Extend agent capabilities by writing simple functions directly on Cloudflare’s developer platform. This allows agents to create and execute their own tools on the fly within a secure, high-performance environment.

A Partnership for Secure AI Infrastructure

The launch of Cloudflare Environments marks the latest milestone in the ongoing collaboration between the two companies to solve the last mile of AI connectivity. To learn more about Cloudflare and Anthropic’s work together, please check out the resources below:

• Cloudflare Blog: Claude Managed Agents on Cloudflare
• Anthropic Self Hosted Sandboxes

About Cloudflare

Cloudflare, Inc. (NYSE: NET) is the leading connectivity cloud company. It empowers organizations to make their employees, applications and networks faster and more secure everywhere, while reducing complexity and cost. Cloudflare’s connectivity cloud delivers the most full-featured, unified platform of cloud-native products and developer tools, so any organization can gain the control they need to work, develop, and accelerate their business.

Powered by one of the world’s largest and most interconnected networks, Cloudflare blocks billions of threats online for its customers every day. It is trusted by millions of organizations – from the largest brands to entrepreneurs and small businesses to nonprofits, humanitarian groups, and governments across the globe.

Learn more about Cloudflare’s connectivity cloud at cloudflare.com/connectivity-cloud. Learn more about the latest Internet trends and insights at radar.cloudflare.com.

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View source version on businesswire.com: https://www.businesswire.com/news/home/20260519690935/en/

Cloudflare, Inc.
Daniella Vallurupalli
Vice President, Head of Global Communications
press@cloudflare.com

Source: Cloudflare, Inc.