Claude Cowork 60 Minute MASTERCLASS
A complete zero-to-hero tutorial on Claude Desktop's agentic mode: five real use cases, three core primitives, and honest caveats about where it falls short.
April 9thA two-hour livestream that turns the year's biggest AI buzzword into a working autonomous agent you can ship this week.
Loop engineering means replacing yourself in the prompt-review cycle with a second AI that checks the work and decides the next step, so the real skill shifts from writing prompts to defining a goal, a verification, and a guardrail.
Loop engineering is the rebranding of a habit advanced users already had: instead of you prompting an AI, reviewing its output, and deciding the next step, you build a system where a second agent does the reviewing and re-prompting against a fixed goal. The talk maps it to six pieces (automations, worktrees, skills, connectors, sub-agents, memory) and then makes it real with two Claude Code tools. The /goal command gives the agent a finish line and a small fast checker model (Haiku by default) that runs on the stop hook after every turn to decide keep-going or stop. Routines add the timer, running a saved loop in the cloud on a schedule with your skills, connectors, GitHub memory, and API keys. The hardest and most valuable part is not the prompt but defining what done and good actually look like.
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Multi-platform stream check; shows a full YouTube video edited entirely by Claude plus the free open-source tool Hyperframes, teasing a future tutorial on AI video editing.

Defines the concept: you prompting, reviewing, and re-prompting makes you the loop; loop engineering replaces your step with a second agent that checks and decides against a goal.

Walks the six concepts with AI-generated slides: automations, worktrees, skills, connectors, sub-agents (maker vs checker), and memory.

The agent doing the work is biased and will claim done even when it broke things; you need an independent checker, like a writer and a brutally honest editor.

Defining done is the hardest part. /goal is a wrapper around the stop post-hook: after each turn a small fast model, default Haiku, checks if the goal is met and decides keep-going or stop. Needs Claude Code 2.1.139 or newer.

Runs sort every file in my downloads into subfolders by type, keep going until no files are left, do not delete anything, stop after 30 turns. Finds 17 files, creates folders, moves everything, self-verifies, goal achieved.

Rename invoices to a format, label every CSV row, summarize every PDF (empty-the-queue), trim captions to brand rules, turn ideas into hooks. Each is end state + check + guardrail. Cheatsheet 2: /goal [done] checked by [proof] stop after [N] turns.

A Routine is a saved loop that runs on a schedule in the cloud even with your laptop closed; it sets up a fresh environment, pulls your GitHub project, and can use skills, connectors, and API calls. launchd is the local alternative on Mac.

At claude.ai/code/routines builds a daily 9AM routine that reads unread emails, posts the three most important to Slack, with a do-not-reply guardrail, Gmail + Slack connectors. Runs it, gets the Slack DM, shows where to manage connector permissions.

Full inbox sort-and-archive, monthly report first-draft pulled from CRM and email tools, weekly news brief to stop doomscrolling; pick one and ship your first routine.

A real maker routine runs daily at 8AM, uses a cleanup-ticket skill and the Intercom API to process and close support tickets and post to Slack. A separate checker routine runs two hours later to verify closures and reopen any that were closed wrongly. Add an environment for the Intercom API key because the MCP can't close tickets.

Ship one tiny routine this week; start read-only; mind the daily limit. Recaps all six concepts plus /goal and routines. AI leverage equals your skill times your clarity, which is why seniors out-produce juniors with AI.

Open Q&A: how her day looks running three to four goal agents at once, Hyperframes vs Remotion for AI video, Mac vs PC, GitHub as memory, value-first cold outreach, Substack over Beehiiv, and her women's AI community.
The shift that matters is handing the review-and-decide step to a second agent, which makes defining the goal, the check, and the guardrail the real skill rather than prompt wording.
โIf you prompt AI, read the answer, and type again, you are part of the loop. Loop engineering just means taking you out of that loop.โ
โThat is what Boris, the founder of Claude Code, means when he says he doesn't prompt Claude anymore. His whole job is designing these loops.โ
โYou don't want the agent doing the work to be the one checking the work, because it will tell you it's done even though it just deleted all your tests.โ
โThe amount of AI leverage you get is always a function of your skill and your clarity.โ
โConstruct a clear goal, give it the way to verify its work, and then let it cook.โ
See every word as it's spoken โ crank it to 2ร and still catch all of it. The same dual-channel trick behind Amazon's Kindleย +ย Audible.
Loop engineering is the buzzword everyone is rallying around, and this two-hour livestream cuts through the hype: it is just the formal name for a habit advanced builders already had, taking the human out of the prompt-and-review cycle and handing that job to a second AI. From there it gets practical fast, building a real autonomous agent with Claude Code's /goal command and cloud Routines, no coding required.
The anatomy of an autonomous loop, the six conceptual pieces that loop engineering bundles together.
Every good /goal prompt is end state plus verifiable check plus guardrail; it is about defining the task, not wordsmithing the prompt.
Separate the agent doing the work from the agent grading it, the way a writer and a brutally honest editor produce better writing than either alone.
Her personal formula for how much leverage anyone gets from AI; explains why experienced people out-produce beginners with the same tools.
โHighly recommend following through the newsletter; you have full permission to repurpose all of my content. Just go to the link in my bio, sabrina.dev.โ
Soft and repeated throughout: the free companion newsletter at sabrina.dev holds every prompt and cheatsheet, framed as thousands of dollars of training given away free. Light, non-pushy, value-first.
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119:22A complete zero-to-hero tutorial on Claude Desktop's agentic mode: five real use cases, three core primitives, and honest caveats about where it falls short.
April 9thHow a non-developer built a self-improving content factory that turns one source video into four platform-native formats and gets smarter every night.
June 11thA 40-minute interview with Sandy Lee โ mom of three, regional manager, and someone who made $48,000 in one month using AI with zero technical background.
June 6thA 27-minute step-by-step walkthrough of the Claude + Canva connector: four design use cases, Blotato-powered social publishing, and Brand Kit integration.
May 24thA 17-minute walkthrough that turns claude.ai into a business operating system by wiring it to Gmail, Airtable, Canva, and any MCP-enabled app.
June 19thA 24-minute live demo of the exact Claude Cowork + Blotato setup that drives 30 million monthly views solo.
May 30th