Agent Harness for Personal Finance

You have a wealth manager now

One who keeps your books current, grows what you own, plans what's ahead, and answers when you ask.

Net worth
$958,600
+$11,410 · 1.19% this week
Overview
Lucius drafted a trimEquities +2.1pts over target $20,200

Every personal finance app dies the same way

Most of them die the day you stop typing in numbers. This one runs on its own.

Other appsYou type in every balance.

Miss a week and the numbers go stale.

Open Net WorthKeeps its own books.

Captures receipts from email and syncs banks and brokerages automatically.

Other appsWaits to be opened.

Eventually, it isn't.

Open Net WorthComes to you.

A morning brief on Telegram or inside Claude — the moment something needs you.

Other appsShows you a number.

Up or down — that's it.

Open Net WorthTells you what to do about it.

Sizes the trade and shows the working before you decide.

Other appsForces its framework.

Its categories, its budgets, its way.

Open Net WorthWorks your way.

Your categories, your rules, your methods.

Other appsClosed box.

You get the features they ship — nothing more.

Open Net WorthOpen and extensible.

Every line on GitHub. Add your own skills, automations, and connectors.

All
Your assets in one place
Zero
Balances you'll ever type
24 / 7
Watching every asset you own
Unlimited
Customizations
One The manager Who Lucius is, and why his answers are different

Every great fortune has a manager. Now yours does too.

The richest families don't watch spreadsheets. They have someone who does it for them, who knows every holding and is never off the clock.

Meet Lucius

Your wealth manager

Bruce Wayne had Lucius. Now you do too.

Lucius reads your actual books, so every answer comes from your real numbers.

"Can I afford a $120k car and still retire by 40?"

Any other AI

That depends on your income, savings rate and expected returns…

Lucius

No — it pushes your date from 39.5 to 41.2. Keep it under $80,000 and you still retire at forty.

"Should I take some profit on NVDA?"

Any other AI

Consider your risk tolerance and whether the position still fits your thesis…

Lucius

It's 6.8% of everything you own and you're up 214%. Selling $22,000 banks $14,800 and cuts your worst-case drop by 8 points.

"Where did my money actually go last month?"

Any other AI

Try categorising your transactions and reviewing your bank statement…

Lucius

$4,612 across seven categories. Dining ran $36 over, and a subscription you last used in March renewed at $89.99.

"What happens if I lose my job for six months?"

Any other AI

Most advisors suggest keeping three to six months of expenses saved…

Lucius

You'd be fine. $45,260 covers 5.1 months at your real spend, and cutting travel gets you to 7.4. Retirement slips four months.

"Am I actually beating the market?"

Any other AI

Compare your returns against a relevant benchmark over the same period…

Lucius

Yes — +18.4% against the S&P's +16.1% this year, after fees. Almost all of it came from one position, which is its own risk.

Built in, not bolted on

Not a chatbot parked on top

Lucius isn't a separate window you go ask. He's the one shaping your budget, running your plan, and behind every suggestion in the app.

Lucius, across the appONE MANAGER
BudgetRebuilt your envelopes after rent went up $180
PlanMoved your FI date after this month's real spend
InvestingSized a trim on NVDA and found $85,500 to put to work
CommitmentsFound a better rate on the loan you're planning

Always on

Lucius doesn't sleep so you can

Markets, filings and headlines on everything you hold — plus your accounts, your rates, your due dates. He reads all of it overnight and tells you the part that mattered.

OvernightWHILE YOU SLEPT
NewsNVDA cut guidance after the bell — 6.8% of your bookRead it
FlaggedA $1,284 card charge in a country you're not in
Rate cutYour savings rate dropped to 3.6% without notice
RevaluedThree sales on your street closed above estimate+$14,200
Two The office What it does while you get on with your life

Tracking

Tracking that takes no effort

Bank and card feeds, receipts read from your inbox, statements you drag in — PDF, XLSX, OFX, QIF. Everything arrives filed and categorised, without you touching it.

Filed automaticallyTHIS WEEK
Gmail receiptGroceries$84.20
Plaid · transferSavings$2,000.00
Statement import · PDFHome$1,840.00
Visa ··4821Transport$12.40
Interactive BrokersDividend$704.20

Budgeting

Whatever system works for you, works here

Zero-based, 50/30/20, envelope-style, or a system you made up yourself — the framework is yours to pick. Filled in from what's already tracked, not by hand.

Envelopes · JuneZERO-BASED
Groceries$612 of $800
Dining out$486 of $450
Transport$168 of $300
Travel$1,240 of $1,400
Home$2,100 of $2,400
Subscriptions$94 of $160
Savings target$4,200 of $4,200
Every dollar has a job.
Needs$3,760 of $4,200 · 50%
Rent, groceries, utilities, insurance
Wants$2,610 of $2,520 · 30%
Dining out, travel, subscriptions
Savings & debt$1,680 of $1,680 · 20%
Brokerage transfer, credit card payoff
Net income split 50/30/20, tracked automatically as it lands.
Groceries$188 left
Dining outEmpty · locked
Fun money$44 left
Gifts$66 left
Car fund$210 left
Clothing$18 left

Investments

Watches, analyses, and suggests

Lucius turns filings, news, and numbers into a clear decision—so you act on evidence, not FOMO or panic.

Worth acting on3 TODAY
Take profitNVDA up 214% since you boughtRotate $22,000
OpportunitySpaceX filed to IPO — a sector you're not inSee the case
RiskTSLA cut guidance — 4.2% of your bookTrim $6,800
LuciusTHIS MORNING

"Take a third off NVDA and rotate it."

NVDA is up 214% and now 6.8% of your portfolio. Trim $22,000 to bank the gain and put $85,500 back to work.

Gain banked$14,800Worst-case drop−8 ptsReady to deploy$85,500
Draft orderExplain

"Don't sell today. Nothing has actually changed."

The market is down 7%, but your holdings and plan have not changed. Selling now locks in $34,200; similar drops recovered within five months.

If you sell−$34,200If you waitUnchangedPast recovery5 months
HoldExplain

"Skip this one. You'd be buying the top."

It is up 82% in six weeks, and two funds already give you the same exposure. Adding $15,000 would push one sector to 68% of your equity.

Already exposed2 fundsWould become68% one sectorBetter useDeploy $119,800
Skip itExplain

"Your bond fund is the wrong one for this rate path."

Your fund has 8.4 years of duration into a cutting cycle already priced in. A shorter fund earns 0.9% more with less risk and the same allocation.

Extra per year+$1,340Duration risk8.4 → 3.1 yrsSources read11
Switch itExplain
The big onesFUNDING PLAN · LIVE
House deposit · Mar 2028$68,400 of $120,000
Fully covered$2,150/mo earmarked · 19 months to go
Car · financed over 36 months$18,600 of $58,000
Tight in NovTwo instalments land in the same month as the insurance
Mortgage · 28 years remaining$412,000 outstanding
On trackRefinancing at 4.1% would save $61,400 over the term
Emergency fund · target 6 months$45,260 of $52,800
5.1 monthsFunded to target in 4 months at the current rate

Milestones

Know you can afford it before you sign

A house, a car, a loan. Name it and the funding plan works backwards — monthly cost, where it comes from, and what it costs you elsewhere.

Projections

Plan and control your future

Put the house, the car and the second child on the timeline. Five thousand runs come back with the odds.

5,000 simulated paths
Retire at 45Retire 4562% Retire at 48, buy the house48 + house87% Coast from 42Coast 4279%
FIRE target $1.71M
House · −$180k× Car · −$58k× Child · −$14k/yr×
Reach FI · ~41 Retire · 48 $23.4M $15.6M $7.8M
Age 25Age 55Age 85
Building wealthDrawing down
Typical path · p50 Good-to-bad luck range FIRE number
2008-style crash2008 crash Lost decade High inflationInflation Bad first five yearsBad first 5y
Pot at 48 · p50$3.16M
Worst case · p10$1.40M
Best case · p90$5.89M
Odds it lasts87%
Three The personalization The agent harness that makes your office work exactly your way.

Customize it

Add any MCP. Teach any skill. Make it yours.

This is the harness — the part that gives Lucius memory, tools, and reach. Connect new sources and channels, run authorized actions, and define the automations and skills that fit how you work.

IBInteractive Brokers
SFSimpleFIN
EBEnable Banking
PLPlaid
CBCoinbase
ALAlpaca
YDYodlee
GMGmail
++ 27 more sources
Open Net Worth
Your portal
TGTelegram
CLClaude
GPChatGPT
GEGoogle Gemini
PXPerplexity

Any MCP, in or out

Read data, run automations, or place authorized trades through any MCP. Expose your books and tools to Claude, ChatGPT, or a client you built yourself.

Teach it new skills

Define your own skills and automations. It does whatever you set it up to do.

As far as you want to take it

Read-only for balances, or authorized to place trades — you decide how much control it gets.

Four Privacy Where it runs, which model reads it, what the code can do.

Discretion

What's yours stays yours

Handing your financial life to software is one leap. Letting an AI read it is another. So all three choices stay yours.

CHOICE 01

Where it runs

Run it wherever you want it. The ledger is a folder on your disk, and it stays that way unless you decide otherwise.

  • Your laptop
  • A machine on your network
  • A cloud box only you hold the keys to
CHOICE 02

Which model reads your books

Point Lucius at a local model and nothing touches the internet at all. Or use a provider you trust, on your own key.

  • A local model · zero cloud calls
  • Claude, GPT, or any provider you trust
  • Your account, your key
CHOICE 03

What the code is allowed to do

Trust shouldn't rest on a privacy policy. The code is public — anyone can check exactly what leaves your machine.

  • No tracking of any kind
  • Cut it off from the internet and it still works
  • Fork it, audit it, change what you disagree with

The wealthy have kept their affairs private the same way for a century — by owning the office rather than renting a seat in someone else's.

Be first through the door

Private beta, limited seats. It runs on your own computer, and your data never leaves it.

No newsletter. No sharing. One message when we open.