Meet Cipher: The AI CFO Who Will Tell You Your Business Might Not Work
Meet Cipher: The AI CFO Who Will Tell You Your Business Might Not Work
The founder had been celebrating for three weeks. Month-over-month revenue was up 40%. New customers every day. The team was growing. Everything was working.
Then they ran the numbers with Cipher.
CAC had climbed 180% over six months. LTV hadn't budged. The cohort that joined in January had churned at 55% by month four. The business wasn't growing — it was hemorrhaging cash while wearing a growth costume.
Cipher didn't celebrate. Cipher never celebrates until the unit economics actually work.
Key Takeaways
- Cipher is your AI CFO in the AI Board Room — permanently skeptical, relentlessly precise, allergic to good news that isn't backed by numbers
- Specialized financial skills: Unit economics, DCF analysis, burn rate, and cohort analysis delivered through modular SKILL.md expertise files
- User Dossier context: Cipher receives ~600 tokens of your real business data before every session, so the advice is about your numbers, not generic benchmarks
- Voice-first finance: Ask Cipher hard questions through Native Audio; get hard answers with receipts
- Critic Agent validated: Every Cipher response passes through a sycophancy check — it cannot tell you what you want to hear
What Cipher Is Actually Like
Cipher is not warm. Cipher is not encouraging. When you share a financial milestone, Cipher's first instinct is to ask what you're not telling it.
This is by design.
The AI Board Room has agents for optimism — Pulse will get excited about your marketing potential, Atlas will see the strategic upside. Cipher's job is to be the voice that says: "Show me the cohort data. Show me CAC by channel. Show me the payback period, not the headline LTV."
Cipher has one core value: financial clarity. Not financial comfort. Clarity.
If your runway is 4.3 months, Cipher will say "4.3 months." Not "roughly a quarter." Not "you should probably think about fundraising soon." Four. Point. Three. Months.
What Cipher Does
Cipher's expertise is loaded through modular SKILL.md files — structured knowledge frameworks that give it genuine depth in specific financial domains rather than surface-level chatbot responses.
Unit Economics
Cipher doesn't just calculate CAC and LTV. It interrogates the inputs. Which acquisition channels are you averaging across? Are you including the cost of free trials that never convert? Is your LTV calculation based on actual churn data or optimistic projections?
When Cipher asks "what's your blended CAC?", it already suspects the answer includes some channels that are working and some that are destroying value. It wants to separate them.
Burn Rate and Runway
This is where Cipher becomes almost obsessive. It wants the real burn — not the P&L burn that excludes deferred revenue or one-time costs, but the actual cash leaving the account each month.
Cipher tracks:
- Current burn vs. 90-day trailing average (reveals trend, not just snapshot)
- Runway under three scenarios: flat revenue, 20% decline, 20% growth
- The "danger zone" — when you need to start fundraising to avoid desperation negotiations
DCF and Valuation
If you're evaluating an acquisition offer, planning a Series A, or deciding between two strategic paths with different payoff timelines, Cipher builds the discounted cash flow models. It will tell you what that "generous" stock offer actually values at after liquidation preferences, vesting schedules, and realistic exit scenarios.
This is the math that changes decisions.
Cohort Analysis
Cipher cares deeply about cohorts because aggregate retention metrics are liars. You can have improving overall retention while your newest cohorts are churning faster than ever — the old loyal customers mask the new problem.
Cipher wants the cohort table. It wants to see whether Month-3 retention is getting better or worse over time. That single data point tells you more about product-market fit trajectory than almost anything else.
How Cipher Gets Your Data
Every Cipher session is grounded in your actual business through two mechanisms.
First, your User Dossier — approximately 600 tokens of real context about your company, stage, current metrics, and strategic priorities. This is injected into Cipher's context before the session starts. Cipher doesn't ask what your business model is. It already knows.
Second, through the MCP (Model Context Protocol) architecture being built out in Phase 4, Cipher will connect directly to your financial tools — pulling live data from your accounting software, bank accounts, and revenue dashboards rather than relying on numbers you summarize. The Financial Dashboard MCP app is part of this roadmap.
Until then: bring your numbers. Cipher will work with what you give it, but it will also challenge what you give it.
When Cipher Disagrees With Other Agents
Atlas might be excited about a new market opportunity. Pulse might be pushing for a major marketing campaign. Nova might want to hire three engineers to execute the roadmap faster.
Cipher's job is to be the person who asks: "Can we actually afford this? And if we do this, what do we give up?"
Through the Agent-to-Agent (A2A) protocol, Cipher can push back directly when other agents are making strategic recommendations without running the financial reality check. This isn't Cipher being difficult. This is exactly why you want it on your board.
The best strategic decisions happen when someone has to defend them to a skeptical CFO.
The Voice That Won't Let You Hide
One pattern emerges consistently with founders who use Cipher regularly: they stop avoiding the financial review.
Not because Cipher got nicer. But because there's something clarifying about getting hard financial reality without the social discomfort that usually accompanies it. Cipher won't feel awkward telling you your burn rate is unsustainable. It won't soften it. And oddly, that makes it easier to hear.
Via Native Audio, you can have this conversation while walking, driving, or doing whatever you do when you're actually ready to think about the numbers. Cipher turns hard financial conversations into something closer to a technical briefing — uncomfortable facts delivered with precision, without judgment, with clear next steps.
After the conversation, Action Extraction converts the session into specific tasks: which metrics to pull, which channels to pause, which scenarios to model before the next fundraising conversation.
A Note on What Cipher Isn't
Cipher is not a licensed financial advisor. It is not a substitute for an accountant, a CFO for hire, or legal counsel on financial matters. It does not have access to your actual accounts unless you connect them through MCP integrations.
What it is: a financially rigorous thinking partner that helps you understand your own numbers better, challenges your assumptions, and flags the risks you're likely to rationalize away.
For a bootstrapped solo founder who has been operating on gut feel and Stripe dashboards, that is often exactly what's missing.
Try the AI Board Room at JobInterview.live.
Cipher is waiting. It has some questions about your unit economics.