Sunil Pai
Principal Systems Engineer at Cloudflare focused on AI agents, Cloudflare Workers, Durable Objects, and developer tooling. He previously created PartyKit and returned to Cloudflare after its acquisition.
Durable Objects and Dynamic Workers Reopen Eval for AI Agents
Cloudflare engineers Sunil Pai and Matt Carey argue that AI agents need compute primitives beyond stateless functions: Durable Objects for addressable, persistent coordination, and Dynamic Workers for safely running generated code. Pai frames Durable Objects as the execution unit behind Cloudflare’s Agents SDK, giving agents state, resumable streams, scheduling, and multi-client sync without pushing distributed-systems work onto developers. Carey and Pai present Dynamic Workers as the larger shift: a sandboxed “eval++” model where LLM- or user-generated code starts with no ambient authority and receives only explicitly granted capabilities.
Cloudflare Bets Durable Objects and Dynamic Workers Can Power Cheaper Agents
Cloudflare’s Sunil Pai argues that agentic software will need platform primitives — durable state, isolated code execution and cheap startup — rather than another thin agent framework. Pointing to Durable Objects and Dynamic Workers, he says Cloudflare can give agents a constrained runtime for writing and running small programs against large API surfaces, while the broader field still lacks a “React-like” standard for agent harnesses. Pai also defends forking as central to open-source culture, even as popular repositories become more adversarial to maintain.