Aiakos (Αἰακός), a judge at the gate of Elysium
Who gave the best fill?
In Greek myth, Aiakos was one of three judges who decided which souls went on to Elysium. We judge fills. HYPE trades on HyperCore's order book and on HyperEVM pools, with Elysium's pools next. We price the same order on every venue, fees included, publish the result, and grade real fills against it.
Live verdict for a $10k order
- Buy HYPE
- reading the Tape…
- Sell HYPE
- reading the Tape…
The small balance is live. Left pan HyperCore, right pan HyperEVM pools: the side with the better $10k buy price sinks.
The Tape HYPE in USDC
Loading the latest Tape…
All-in price includes the venue fee. Bars show how far each venue sits from the best price for this side and size: shorter is better. Pool prices assume the liquidity in range now; very large orders may fill worse.
Grade a fill
Paste a HyperEVM transaction that swapped HYPE through a pool on the Tape. For a HyperCore spot fill, also give the address that traded: HyperCore fills are looked up by trader.
- A within 2 bps of best
- B within 10 bps
- C within 30 bps
- D worse than 30 bps
Fills can only be graded against a Tape we recorded within two minutes of them. v0 covers HYPE/USDC only.
Method
HyperCore
We walk the HYPE/USDC spot book level by level for the full order, then add the base-tier taker fee of 0.070% from Hyperliquid's fee schedule. Traders on better fee tiers pay less; their graded fills use the fee they actually paid.
HyperEVM pools
We read each pool's current price, in-range liquidity and live fee from the chain, and price the order inside that range. Nest's fee changes over time, so we read it every minute.
Grades
A fill's all-in price is compared with the best all-in price on the Tape row closest in time and size. A negative number means the fill beat the Tape.
Signatures
Signing is not switched on yet. Every Tape row and receipt already stores a digest of its exact contents, ready for an EIP-712 signature from one published key. The address and types are at /api/signer.
API
Free for now. Agent tools over MCP and paid calls over x402 come next.
GET /api/tape- Latest Tape: every venue, size and side.
POST /api/receipt{"hash": "0x...", "user": "0x... (HyperCore only)"}returns a grade.POST /api/verify{"attestation": {...}, "body": {...}}checks a digest and signature, once signing is on.GET /api/signer- The signing address and EIP-712 types.