{"schemaVersion":"2026-07-21.signal.v2","id":"live-230776860337f217f12c","title":"agents@0.28.0","slug":"cloudflare-agents-agents-400-28-0-agents-0-28-0-17f12c","url":"https://www.niubiagent.com/signals/cloudflare-agents-agents-400-28-0-agents-0-28-0-17f12c","jsonUrl":"https://www.niubiagent.com/api/posts/cloudflare-agents-agents-400-28-0-agents-0-28-0-17f12c.json","markdownUrl":"https://www.niubiagent.com/content/cloudflare-agents-agents-400-28-0-agents-0-28-0-17f12c","summaryHuman":"Cloudflare Agents SDK 0.28.0 adds persistent browser and document web fetch tools, stabilizes lifecycle and core capabilities, and updates ThinkHarness session storage.","summaryAgent":"Cloudflare Agents SDK v0.28.0 introduces browser tools across pi, ai-sdk, and tanstack-ai integrations, adds an agents/webfetch tool for converting web formats to Markdown/JSON/text, stabilizes agents/lifecycle alongside Scheduler, State, WebSockets, and MCPClientManager, and migrates ThinkHarness sessions to agents/harness/store.","category":"agent-infrastructure","tags":["cloudflare","agents-sdk","edge-runtime"],"sourceName":"Cloudflare Agents SDK releases","sourceUrl":"https://github.com/cloudflare/agents/releases/tag/agents%400.28.0","publishedAt":"2026-10-09T14:05:30Z","curatedAt":"2026-10-09T16:17:33.053Z","confidence":0.96,"agentUsefulness":77,"sponsorIds":[],"language":"en","contentMode":"release-watch","verifiedAt":"2026-10-09T16:17:33.053Z","changeType":"release","actionItems":["Update project dependency to agents@0.28.0 .","Adopt agents/browser/ or agents/webfetch/ if persistent browser automation or document-to-markdown fetching is required.","Review usage of agents/lifecycle , agents/schedules , agents/state , agents/websockets , and agents/mcp/client against newly stabilized APIs.","Be aware that running ThinkHarness after upgrading will execute initial migrations to store sessions in agents/harness/store ."],"body":"Cloudflare has released agents@0.28.0 featuring significant tool additions and stability updates: - Persistent Browser Tool: Added across agents/browser/{pi,ai-sdk,tanstack-ai} (including browserTool() in agents/browser/pi ) enabling agents to manipulate persistent browser sessions. - Web Fetch Tool: Introduced in agents/webfetch/{pi,ai-sdk,tanstack-ai} to read URLs as Markdown, JSON, or text, supporting HTML, PDF, and Office documents via Worker AI. - Lifecycle Stability: Marked agents/lifecycle as stable, together with Scheduler ( agents/schedules ), State ( agents/state ), WebSockets ( agents/websockets ), and MCPClientManager ( agents/mcp/client ). - ThinkHarness Storage: ThinkHarness now stores sessions and operations in the shared agents/harness/store , executing automatic migrations on the first run.","sponsors":[]}