What's new in Marcus

3 new prompts in the library

Three new deep-work prompts are now live. Create McKinsey-grade presentations — structured, data-dense slides built in the style of a top-tier strategy firm. Clean up your Codebase — an eight-subagent prompt that runs a full audit across deduplication, type safety, dead code, and more. Use the 80/20 Principle to Prioritise your Roadmap — applies Pareto analysis to your feature list and returns a ranked, data-driven build order. All three are available on Pro.

Folders for Favourites

You can now organise your saved and custom prompts into named folders. Create a folder for Board prep, M&A, or any recurring context — then move prompts in with a single click. Folders are private to your account and prompts are never deleted when a folder is removed.

Decision Maker

High-stakes decisions deserve more than gut instinct. The Decision Maker walks you through a structured six-stage framework — Frame, Investigate, Challenge, Bull Case, Finalise, and Export — so you arrive at your conclusion with the reasoning documented and stress-tested. Available on Pro.

Book Insights

The best leadership thinking is spread across hundreds of books most executives never have time to finish. Book Insights distils the key ideas from 100+ titles and lets you inject them directly into any prompt — so you get the perspective of Drucker, Kahneman, or Christensen without losing an afternoon.

Use as Template

Found a prompt in the library that's close to what you need? You can now open it directly in the Prompt Builder as a starting point — pre-loaded and ready to adapt to your specific situation, company, or context.

Smarter Prompt Builder

The Prompt Builder now lets you pull in your saved profile details — your role, company, and industry — inline as you write using @ mentions. Less repetition, more relevant output from your AI tool of choice.