The Cloudflare Workers SDK shipped major tooling and runtime improvements focused on developer experience and local development capabilities. The local explorer UI launched as an experimental feature, giving developers a browser-based interface to inspect D1 databases, KV namespaces, and Durable Objects during local development. Alongside this, Wrangler and Miniflare gained new command suites—including wrangler ai-search for managing AI Search instances, wrangler tunnel for Cloudflare Tunnels, and wrangler containers instances for viewing container state—while the test framework upgraded to Vitest 4 support in the vitest-pool-workers integration. Throughout the period, support expanded for Node.js compatibility modules (perf_hooks, readline, worker_threads, child_process, tty, repl) graduating from experimental flags to automatic enablement at recent compatibility dates.