A made-up company
to build your agents against
Connect an agent to a studio of made-up figures, the same way as to your books. Nothing real goes in or out, and Reset brings the same figures back.

Machines
Every dollar a machine moved here, with a receipt: which agent, whose, how much, to whom, and who decided. What waits for a person is on top.
- AI staff
- Agents
- Wallets and cards
- Keys
Agents · Open the sandbox stands beside Connect agent
- Lumen Row Studio (sandbox)Three months of made-up books · one per personSandboxOpen the sandbox
- TATest agentConnected to the sandbox only · over MCP · takes no seatActive
- Two payments wait for a signatureBen Ortiz $3,100 · Brightpath Ads $1,250 · no money moves
- Agent wallet (sandbox)A toy wallet · past its limits a send waits for the owner500.00 USD
- ResetThe same figures back · agents and webhooks stayReset
The sandbox beside your agents: its made-up studio, an agent connected only there, two payments waiting to be signed, the toy wallet and Reset.
How it works
API sandbox
in four lines
- One book per person
- Try in the sandbox, beside Connect agent, opens a studio of made-up figures: three months of rows, invoices to three clients, supplier bills, budgets and two payments waiting for a signature.
- Connected as anywhere
- An agent comes in with a key or over MCP, and your webhooks fire marked as sandbox. An agent that works only there takes no seat and none of the month's allowance.
- Nothing real moves
- A signed payment is booked without money moving, and no email, push or invoice reaches anybody. The agent's toy wallet holds $500, and a send past its limits waits for the owner as in a real book.
- Reset, same figures
- Reset, pressed twice, brings the same figures back and keeps the book's address, its agents and its webhooks, so a test written against it passes again.
Questions
API sandbox
the short answers
Which plan has it?
Pro and every plan above it. The sandbox is not counted as a business space, and an agent's calls there do not use the month's allowance.
Could a sandbox payment be mistaken for a real one?
It wears a Sandbox mark in the space switcher and a strip on every page, on the phone too, including the sheets that sign its payments. Only the demo bank and a file import connect to it.
Read next
See your own cabinet
on a thirty minute call
We open it on your books and show what the machine would do by itself in your first week.