Claude Code's NEW Managed Agents Just Changed EVERYTHING

Description

Claude Managed Agents are WAY better than I thought - and in this video I talk about exactly how I'm personally using them in my SaaS (Harbor) to create a website builder - and then I breakdown exactly how you can use them in your own project to solve any issue and any problems you may have had building agents 1. MCPs 2. Credentials vaults 3. Built in Tools + Ability to add any tools you want Thanks for watching and PEACE Hamish Anthropic just dropped Managed Agents — a hosted agent system where Claude runs on their infrastructure in a Linux sandbox with bash, file ops, web search, MCP servers, vault-scoped credentials, and 3-hour sessions. No laptop. No VPS. No timeout. Just spawn an agent in the cloud and let it build. In this video I show you exactly how I built Harbor Build — an AI website builder that takes a prompt and ships a live, SEO-optimized Astro site with Stripe checkout already wired up. All running on the Managed Agents beta API with Convex handling the agent component. What you'll see: Live demo of Harbor Build generating a real e-commerce site with Stripe How Managed Agents differs from the Messages API (persistent sandbox, long-running sessions, built-in MCP) The 8 built-in tools Claude gets for free (bash, read, write, edit, glob, grep, web_fetch, web_search) Why vault-scoped credentials are the game-changer for selling AI agents to clients How to add custom tools like Bright Data for scraping Live build of a universal scraper in under 20 seconds Why I switched from Opus 4.7 to Sonnet 4.6 for cost Full walkthrough of the platform.claude.com managed agents dashboard If you've ever wanted to spin up your own Claude Code in the cloud, with your clients' credentials, running autonomously — this is how. Try Bright Data: https://brightdata.com/?promo=incomestreamsurfers 0:00 - Harbor Build Preview: A Live Website Built By An Agent 0:51 - Messages API vs Managed Agents API 1:30 - Harbor Build Architecture Walkthrough 2:09 - The Beta Managed Agents API Features 2:31 - Vault-Scoped Credentials (The Game Changer) 3:11 - The 8 Built-In Tools You Get For Free 3:51 - Adding Custom Tools (Bright Data Example) 4:06 - Bright Data Sponsor: Scraping Behind Cloudflare 5:46 - What I've Been Cooking The Last 3 Days 6:27 - Harbor Copilot: Same System, Different Use Case 8:08 - The Agent Code Walkthrough 8:26 - Why I Switched From Opus 4.7 To Sonnet 4.6 9:15 - Tour Of The Managed Agents Dashboard 10:19 - Spawn Claude Code Anywhere With Anyone's Credentials 11:24 - Bash CLI: Vercel, Resend, GitHub From The Sandbox 12:42 - The 4 Classes Of Tools (Built-ins, MCP, Custom, Anti-Tool) 13:19 - What You'd Have To Build Without Managed Agents 13:52 - Let's Build One Right Now 14:49 - Building A Universal Scraper Agent Live 16:18 - First Scrape Test (Two Men) 16:44 - Scraping Iseut Behind Cloudflare 17:37 - Harbor Build Finished In The Background 18:06 - Built-In CMS Reveal 18:25 - Outro claude managed agents,claude agent sdk,anthropic managed agents,claude cloud agents,harbor build,claude code cloud,anthropic api,claude api tutorial,managed agents api,claude sonnet 4.6,claude opus 4.7,mcp servers,vault credentials,linux sandbox agent,serverless ai agent,ai website builder,claude code alternative,bright data scraping,claude automation,cloud agent,ai agent development,claude skills,claude agents tutorial,convex agent component,astro website builder,ai coding agent #ClaudeAgents #ManagedAgents #Anthropic #ClaudeCode #AIagents #ClaudeAPI #HarborBuild #MCP #AIautomation #Serverless