← Build Agents on Cloudflare / agents

Build Agents on Cloudflare

Build and host Agents on Cloudflare, connect chat, voice, email, Slack, and webhooks to a durable agent runtime with Browser, Sandbox, AI Search, MCP, Payments, and other MCP tools.

When you host agents on Cloudflare, each agent session has a durable identity, local SQL storage, real-time connections, scheduled work, and recoverable execution.

Deploy once and Cloudflare runs your agents across its global network, scaling to tens of millions of instances. No infrastructure to manage, no sessions to reconstruct, no state to externalize.

Agents on Cloudflare are composed from four parts:

• Communication channels define how users and systems reach your agent, such as chat, voice, email, Slack, webhooks, and other event sources.
• The agent harness defines the loop: how the agent calls models, selects tools, handles tool results, streams responses, and decides whether to continue. Use Project Think for an opinionated harness, or build your own loop directly on the Agents SDK runtime.
• The Agents SDK runtime provides durable infrastructure: the Agent class, state, sessions, routing, WebSockets, scheduling, fibers, and observability.
• Tools give the agent capabilities: browser automation, sandboxed code execution, AI Search, MCP tools, and payments. Code Mode lets models discover and orchestrate multiple tools by writing code.

Three commands to a running agent. No API keys required — the starter uses Workers AI by default.

npx create-cloudflare@latest --template cloudflare/agents-starter
cd agents-starter && npm install
npm run dev

The starter includes streaming AI chat, server-side and client-side tools, human-in-the-loop approval, and task scheduling — a foundation you can build on or tear apart. You can also swap in OpenAI, Anthropic, Google Gemini, or any other provider.