Claude for Finance: The Opus 5 Skill Stack
The Skills that Turn Opus 5 Into the Finance Team a Founder Never Hired
Opus 5 shipped on July 24: near Fable 5 intelligence at half the price, with a real jump on numerical reasoning, tables, and financial modeling, the exact work a founder without a finance team keeps getting wrong.
At Startup School, Boris Cherny, the creator of Claude Code, said they deleted more than eighty percent of Claude Code’s system prompt for Opus 5 → His advice even to non-builders: every six months, delete your skills and config and see what happens. It might surprise you.
So this instead of being a pile of prompts, is six reusable Skills you build once and Opus 5 loads on its own.
📚 In this guide you’ll get copy-and-paste Skills to:
Compare actuals to budget and prior month, explain every variance and list what to investigate
Break down unit economics by channel and cohort, decompose gross margin and show which channel or cohort actually loses money
Model a price change under different churn responses, give you the break-even churn and flag the segments that are underpriced
Build a 12-month rolling forecast as an Excel file, run base, bear and bull scenarios, and tell you which single assumption moves your runway most
Size the raise off your forecast, model the dilution across the cap table including the option pool, and check your target valuation against comparable rounds
Build a live KPI and runway dashboard that pulls from your connected tools and generate the answer-first monthly investor update from the same numbers
Inside you will find:
How to Set Up Your Finance Skills So Opus 5 Runs on Your Real Numbers
How to Close the Month and See Where You Actually Stand
How to Find Where Your Unit Economics Leak Money
How Much Room You Actually Have to Raise Prices
How to Build a Forecast and Stress It Before You Bet on It
How to Size the Raise and Model the Dilution Before the First Meeting
How to Track the Numbers Live and Tell the Story Investors Trust
Launch your site faster than ever with Framer - now with Agents that make every part of your workflow effortless
Framer is the pro website builder for creators, teams, and businesses that care enough to get every detail right. Now with Agents that work alongside you across the full website workflow: designing new pages, managing your CMS, editing content, and adding SEO all without leaving the tool where the real site lives. Trusted by teams at companies like Miro and Perplexity.
Agents bring speed and scale; you bring taste, judgment, and control. Together you can:
Build and iterate faster: generate sections, refine layout and styling, and ship updates in minutes.
Scale content with confidence: update CMS collections, localize copy, and keep metadata consistent across pages.
Stay production‑ready: reviewable changes, collaboration, and safeguards that help teams ship without handoffs.
This issue is available exclusively to paid subscribers!
Paid subscribers unlock the full library: 200+ decks, 10,000+ investors, AI Agent playbooks, and fresh high-signal content every week.
Here’s a good place to start:
🤖 AI Agent Templates
↳ The McKinsey Slide Playbook for Claude — how to build consulting-grade presentations in minutes.
📈 Startup Playbooks
↳ The AI Founders Playbook — lessons from Sequoia, OpenAI, Nvidia, and LangChain on building AI startups from zero.
🎯 The Deck Library
↳ 27 Most Promising AI Startup Pitch Decks Backed by Top Investors — the best-funded AI startups of 2025, slide by slide.
💰 Investor Database & Tools
↳ The Family Office List — 1,000 family offices actively writing cheques. Used by 5,000+ founders raising their round.
Not subscribed yet? Try it free for 7 days and unlock this guide, plus our full premium library:
We’re already 70,000+ founders and operators inside!
Let’s begin!
