Bringing more agent harnesses and frameworks to Cloudflare, starting with Flue

In 2026, agent harnesses like Codex, Claude Code, OpenCode, Pi, and Project Think will be deployed as robust infrastructural components, transitioning from prototypes to production environments. This progression presents challenges related to distributed systems, such as maintaining context and security when agents are interrupted or run untrusted code. To address these, Cloudflare's Agents SDK provides a foundational layer offering durable execution and dynamic workflows, which is complemented by the Flue framework that enhances developer experience through integrations and project structures. Flue enables agents to function autonomously by defining their context rather than scripting their actions, allowing them to integrate seamlessly into existing environments like Slack and GitHub. The framework utilizes Cloudflare's infrastructure to provide secure, efficient code execution and a durable virtual filesystem, ensuring agents can perform tasks without the overhead of full container environments. This architecture, tested through Project Think, ensures agents can manage complex workflows and access Cloudflare's ecosystem capabilities, paving the way for scalable, reliable AI agent deployment.