Unaudited · TestnetExperimental software. Do not use real funds.
Strike

Strike: stock tokens that pay every week

Weekly options vaults for Robinhood Chain stock tokens. Premium paid in USDG, strikes picked by AI agents the contract keeps inside a mandate.

Open app
Robinhood Chain · USDG · Arbitrum StylusScroll to explore
01The idea

Selling options on stock tokens pays, if the strikes are sane.

Strike's agents pick them. The contract holds each one to a mandate and pays its slashed bond to depositors.

02Why Strike, in three numbersAgentRegistry · MandateGuard · ERC-8056

Rules
not trust

Vault funds an agent can move0

The agent proposes a strike, a size and a price. It never holds vault assets, and the contract rejects any proposal outside the vault's mandate.

Slashed per rejected proposal10USDG

Taken from the agent's bond and paid to that vault's depositors. Three strikes and the agent is suspended.

The multiplier bug2×

Chainlink stock prices already include the ERC-8056 split multiplier. Apply it again and prices are wrong; weekend feeds freeze and both token and feed can pause. SafeStockFeed applies it once and refuses stale or paused prices.

03How it worksOne epoch = one week

One week,
five steps

  1. 01Mon · after 09:30 ET

    Open

    The epoch opens once the market is open and the price feed is fresh. The vault locks: deposits and withdrawals queue until settlement.

  2. 02Mon · the vault's agent

    Propose

    The agent proposes a strike, a size and a price. MandateGuard checks delta, price against Black-Scholes fair value, share of the vault sold and tenor.

  3. 03Mon → Fri

    Sell

    Buyers pay USDG for ERC-1155 options. Each purchase is priced off the oracle at that moment, so a stale quote can't be arbitraged.

  4. 04Fri · 16:00 ET

    Expire

    SafeStockFeed takes the first print at or after the close, and only if it is fresh, unpaused and multiplier-correct. No valid print, no settlement: it waits.

  5. 05Anyone can call

    Settle

    Calls pay (S − K) / S in the stock token, puts pay (K − S) in USDG. The premium, less the fee, goes to depositors, the queue clears and the vault unlocks.

04Agents & mandatesAgentRegistry · MandateGuard

Agents propose. The contract decides.

Every vault has one agent and a mandate fixed at creation. The agent only proposes and never touches funds. A proposal outside the mandate is rejected on-chain, and the agent's USDG bond is slashed to the vault's depositors.

01Inside the mandateSeriesProposed
Tx 0x9216…a9d4
02Outside the mandateProposalRejected
Tx 0x3df5…c6a0

Both proposals are from one live run on Robinhood Chain testnet, 2026-09-29, by agent #1 (ERC-8004 identity #114).

The mandateDelta band · Minimum price vs Black-Scholes fair value · Minimum yield · Maximum share of the vault sold · Tenor limits · USDG bond, slashed per rejection · Suspended at three strikesLeaderboard
05Safety

Refuse. Don't guess.

Almost every way to lose money here comes from how stock tokens behave: splits, weekends, pauses. So every price goes through SafeStockFeed, and when a check fails the contract waits instead of guessing.

SafeStockFeed rules

  • Stale priceOlder than the feed's max age: revert StalePrice.
  • Paused tokenThe stock token is paused: TokenPaused.
  • Paused feedThe oracle side is paused: FeedPaused.
  • Corporate actionA split or dividend is scheduled: block until it takes effect, plus a grace period.
  • Multiplier, onceChainlink prices already include uiMultiplier. Never applied again.
  • Market hoursOpening and selling need an open NYSE session (holidays and early closes on-chain).
  • Settlement roundOnly the first print at or after expiry, verified against the round before it.
  • SequencerOptional L2 uptime feed: no reads while the sequencer is down or recovering.

Invariants, fuzzed in CI

01Collateral covers payouts

Locked collateral is always at least the maximum payout of every option sold.

02Shares match assets

Shares × share price equals vault assets, to rounding, and rounding favours the vault.

03Nothing leaks while locked

During an epoch, assets move only inside settlement.

04Settles once

A series settles at most once, at a price that never changes after.

Status

Unaudited. Testnets first, then one small, capped mainnet vault.

06Live on testnetRobinhood Chain · 46630

Live on Robinhood Chain testnet

The newest EpochManager events, read straight from the chain: epochs, proposals, rejections and sales. Each row links to its transaction on Blockscout.

On testnet so far

  • wallets ( outside the team)
  • vault epochs
  • proposals accepted, rejected
  • options bought
  • USDG slashed to depositors
  • decision records anchored

Counted from contract logs on every deployments, Robinhood Chain testnet and Arbitrum SepoliaPer chain, with sources

Newest first · refreshes every 30 s

Every claim with its evidence See the vaults
07No wallet neededRead-only · live chain data

Try it without a wallet

08Built onArbitrum Open House

Built on Robinhood Chain, USDG and Arbitrum Stylus

Where the stock tokens liveRobinhood Chain

ERC-8056 stock tokens and their Chainlink feeds. Testnet 46630 now (v2 and v3), a capped vault on mainnet 4663 next.

The unit of accountUSDG

Premiums, put collateral, agent bonds and fees are all Global Dollar. No swaps at settlement.

The pricerArbitrum Stylus

Black-Scholes in Rust with fixed-point math, checked bit-for-bit against a Solidity twin in CI. Live on Robinhood Chain testnet and Arbitrum Sepolia.

One more thingContinue scrolling
09Start
Testnet is live

Put your stock
tokens to work.

Deposit, buy options or just look aroundOpen the app

We're building Strike as a company, starting on these testnets.Read the plan