Agents

The latest release of the Agents SDK lets you define an Agent and an McpAgent in the same Worker and connect them over RPC — no HTTP, no network overhead. It also makes OAuth opt-in for simple MCP connections, hardens…

The latest release of the Agents SDK brings readonly connections, MCP protocol and security improvements, x402 payment protocol v2 migration, and the ability to customize OAuth for MCP server connections. Readonly connections Agents can now restrict WebSocket clients to read-only…

Sandboxes now support createBackup() and restoreBackup() methods for creating and restoring point-in-time snapshots of directories. This allows you to restore environments quickly. For instance, in order to develop in a sandbox, you may need to include a user's codebase and…

The @cloudflare/codemode package has been rewritten into a modular, runtime-agnostic SDK. Code Mode enables LLMs to write and execute TypeScript that orchestrates your tools, instead of calling them one at a time. This can (and does) yield significant token savings,…

The latest release of the Agents SDK adds built-in retry utilities, per-connection protocol message control, and a fully rewritten @cloudflare/ai-chat with data parts, tool approval persistence, and zero breaking changes. Retry utilities A new this.retry() method lets you retry any…

The Sandbox SDK now supports PTY (pseudo-terminal) passthrough, enabling browser-based terminal UIs to connect to sandbox shells via WebSocket. sandbox.terminal(request) The new terminal() method proxies a WebSocket upgrade to the container's PTY endpoint, with output buffering for replay on reconnect.…