How Sipmill works, what it cannot do, and how to leave.

You approve USDG and create a plan: which stock, how many USDG per buy, how often. A keeper calls the contract when a buy is due; the contract pulls exactly that amount from your wallet, swaps it on Uniswap V3 and sends the stock token straight to you. Cancel any time; nothing is ever held by Sipmill.

Two transactions from you: approve on USDG, then createPlan on the Sipmill contract. The first buy is due the moment the plan exists; after that, one buy per interval. Every buy is one transaction that emits PlanExecuted and shows up on /proof.

The keeper is a server key run by the team. Once a minute it checks which plans are due, simulates execute(planId), and sends the transaction if the simulation passes.

What it cannot do. execute takes one argument, the plan id. The keeper has no price or amount parameter. The contract sets the floor from the higher of the pool's current price and its 30-minute average, minus your max slippage. If the price moved more than that, the buy waits and retries. The amount is the one you chose and the recipient is always the plan's own wallet (see 04). The keeper never holds USDG or stock tokens.

Gas. The keeper pays gas in ETH (about $0.01 per buy). It is topped up manually by the team. Once the token exists, that ETH comes from the creator wallet that receives its creator fees.

If the keeper stops, plans are only delayed. When it runs again, each due plan buys once and moves to its next scheduled time. If the owner key has to replace a leaked keeper key, it calls setKeeper; that is the only thing the owner can change about running plans.

The keeper has no price or amount parameter. The contract sets the floor from the higher of the pool's current price and its 30-minute average, minus your max slippage. If the price moved more than that, the buy waits and retries. Inside the buy transaction the contract reads the pool's current price (slot0) and its 30-minute average (TWAP), takes the higher of the two, computes how many stock tokens your USDG should get, and takes off your slippage. If the swap would return less, it reverts and nothing moves. The keeper retries later (5 min, 15 min, 1 h, 6 h).

Numbers on this site are the unofficial pool price, live, from Uniswap V3 on Robinhood Chain. They are not a quote from Robinhood and can differ from stock market prices.

• Stock tokens are not shares. They are tokenized exposure issued by Robinhood, not available to US persons. Holding one does not make you a shareholder.
• USDG can be paused or frozen by its issuer. While paused, no buy can happen; plans resume on their own afterwards. A frozen wallet cannot buy.
• Pools can run dry. Some pools are small (marked thin pool); a thin pool means a worse price for bigger buys, or a buy that waits until the floor can be met.
• The allowance is the real risk. Approve only what you plan to spend. The site approves 3, 6 or 12 buys, never unlimited. You can set it to zero at any time (06).
• The contract is small and verified, not reviewed by an outside firm. It holds no funds between transactions; read it on Blockscout before you approve.
• If the keeper key leaks, the owner can replace the keeper with setKeeper. Because the floor uses the higher of the current price and the 30-minute average, moving the pool price for a moment cannot push a buy below it; what a leaked key can still do is delay buys. Cancelling the plan or revoking the approval stops it.
• Getting USDG on Robinhood Chain is up to you (the Robinhood app or a bridge). You also need a little ETH for gas.

Cancel a plan: on /plans, press Cancel plan on its card. One transaction (cancelPlan(id)); no further buys for that plan.

Revoke the allowance: on /plans, press Revoke allowance. This sends approve(contract, 0) on USDG and stops every plan of the wallet at once, even ones still marked active.

If this website is down: open the contract on Blockscout (address in 08), tab Contract → Write, connect your wallet and call cancelPlan with your plan id. To revoke, open the USDG token on Blockscout ↗, Write → approve(<Sipmill contract>, 0).

Holding the token raises your per-buy cap: 50 → 250 → 1,000 USDG. That is the only thing it does.

At least 2,000,000 tokens (0.2% of supply) → 250 USDG per buy; at least 10,000,000 (1%) → 1,000 USDG. The contract checks your balance at every buy; if you sell below the threshold, a bigger plan waits until you hold enough again or cancel it. Until the token exists the cap is 50 USDG for everyone.

Once the token exists, its creator fees go to the creator wallet and pay for the keeper's gas and the server. No buyback, no yield, no revenue share.