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PairPilotLaunch app
LONG/SHORT PAIRS / SOMNIA TOKYO

One leg filled.
The other didn't.

PairPilot helps traders understand and resolve long/short pairs whose execution did not finish as planned: what actually filled, what is still open, and a reviewed way to close it.

Open PairPilot Explore the workspace
TestnetPaper USDsoYour wallet signs
Two separate cobalt and titanium paths forming a paired architectural instrument
01 / LONG02 / SHORT
Separate legs.
A shared execution plan.
PAIRPILOT / STUDY 001
FOUR ASSETS.
SIX PAIR COMBINATIONS.
ETH/BTC/SOL/HYPE
Choose your pair.
Reverse your direction.
01 / WHEN EXECUTION SPLITS

See what is open.
Decide what to close.

Two orders, sent one after the other. If only one fills, PairPilot shows requested, filled and still-open quantities for each leg, and the one next step that makes sense.

Pair workspace
INTERACTIVE ILLUSTRATION · NO ORDERS

Long ETH / Short BTC

EXAMPLE / FIXED VALUES
Incomplete pairReview the actual exposure before closing.
LONGETH-PERPFilled
WalletSubmittedConfirmedFilled
Requested
0.0099 ETH
Filled
0.0099 ETH
Open quantity
+0.0099 ETH
SHORTBTC-PERPPartial
WalletSubmittedConfirmedFilled
Requested
0.00029 BTC
Filled
0.00014 BTC
Open quantity
−0.00014 BTC
Next: review the close for the leg that is still open, or keep it on purpose. Nothing is sent for you.Open full workspace
Illustrative quantities and outcomes only. Partial fills below a market minimum may require manual action. Use Simulation in the app to exercise the execution engine.
02 / FROM INTENT TO OUTCOME

A deliberate route
through every trade.

For traders who already have a relative view between two assets. You choose the idea; PairPilot helps you follow its execution.

Prepare your wallet
  1. 01

    Build the pair

    Pick your long and short assets, total notional, and slippage. Each market keeps its own size and price rules.

  2. 02

    Review before signing

    See both quantities and price limits. A preview sends nothing, and stale previews must be refreshed.

  3. 03

    Follow each leg

    Sign two sequential orders. Actual receipts and positions determine the outcome, including partial or unknown results.

  4. 04

    Reconcile, then close

    Check unresolved results without resending. Review the remaining exposure before signing close orders.

03 / THE RECEIPTS

Recovered on chain.
Then four clean runs.

Five live runs on Somnia Tokyo. In the first, the second leg was deliberately withheld: PairPilot showed the one-legged HYPE position and unwound it to flat. Every run was re-checked from chain data and read back flat.

RECORDED 22 OCT 2026CHAIN 50383HISTORICAL TESTNET EVIDENCE
HYPE / ETHCLI · 8ab9e2fb… · Recovery · injected fault Open HYPE ETH withheld Close HYPERecovered to flat
Open HYPE long0xa39db566…e68e6e ETH short · deliberately not sentnot broadcastClose HYPE0x4532aeec…2b857b Verification JSONGitHub
HYPE / SOLCLI · 6516f259… Open Close Read backRecorded flat
Open HYPE0x583241ba…37705f Open SOL0x4c6b8ee5…a9cb0d Close HYPE0x2609cc08…8f65e2 Close SOL0xbee08428…da27f1 Verification JSONGitHub
ETH / BTCBrowser · bda58fa7… Open Close Read backRecorded flat
Open ETH0x971ad9d0…d6e57a Open BTC0x47911ce1…b25035 Close ETH0x92e53f5f…07d233 Close BTC0x51cc3536…b69b55 Verification JSONGitHub
SOL / BTCBrowser · 43dc36bf… Open Close Read backRecorded flat
Open SOL0x41a24218…66361e Open BTC0x5fb8759f…41b7f3 Close SOL0x6270c900…d28718 Close BTC0x153e30aa…0b661b Verification JSONGitHub
ETH / BTCCLI · cd37d484… Open Close Read backRecorded flat
Open ETH0xce94c5e6…a5d1aa Open BTC0xd1f3431a…1427f3 Close ETH0x755a1052…18ba00 Close BTC0x92e1dec7…22cbe5 Verification JSONGitHub
The withheld leg is a labeled test of recovery, standing in for a rejected signature. Recorded outcomes are not a live balance or a profit claim.Download verification JSON
04 / BEFORE YOU START

Know the boundaries.

Do both orders execute together?

Orders are sent one after the other. They are not atomic: one can fill while the other fails. PairPilot shows the result of each leg and the exposure that remains.

Where do the funds stay?

In your trading account. For a linked wallet, the owner holds margin and positions while an authorized signer pays gas and signs orders. The website has no server signing endpoint.

What if the result is unknown?

Use Reconcile to read receipts and positions. PairPilot does not automatically send replacement orders. An interrupted send without a hash requires a manual history check.

Can every position always be closed?

A close can fill partly, fail for lack of liquidity, or leave an amount below the market minimum. Remaining exposure stays visible. Close checks run in the client; they are not contract-enforced reduce-only protection.

Is this live on mainnet?

PairPilot is a testnet MVP on Somnia Tokyo. Trading uses paper USDso and STT gas. Equal notional allocation does not guarantee a hedge or a profit.

YOUR NEXT PAIR STARTS HERE

Put both legs
in the same view.

Launch PairPilot Start in Simulation. Connect a wallet when you are ready for testnet.