Builder codes

Hyperliquid Builder Codes: Approval Checker and Fee Calculator

Check a public approval, calculate the added fee on one perp or spot fill, and inspect a builder's cumulative USDC rewards. No wallet connection or signature.

Last updated: 2026-08-26Last reviewed: 2026-08-26

What are Hyperliquid builder codes?

Builder codes let an app add a fee to fills it routes only after the user approves a maximum for that builder. The approval is public and revocable; the per-order fee is separate from protocol fees. Official caps are 0.1% on perps and 1% on applicable spot fills, while a user's lower approval still governs.

HypeBasis provides a public approval read and cost model only. It never connects a wallet, requests a signature, approves a fee, or routes an order.

Read-only builder code tools

Check an approval, fee, or builder rewards

Choose one task. Each public lookup goes directly from your browser to Hyperliquid, and the fee calculator runs locally.

No signature or routing
Approval lookup

Check a public maximum

The request goes from this browser to Hyperliquid's public info endpoint. HypeBasis does not put either address in the URL, local storage, or analytics.

Verify the official info endpoints

Check cumulative builder rewards

Uses only the builder address above. Hyperliquid's public referral response reports the cumulative USDCbuilderRewardsfield; it does not report a time range or routed notional here.

Fee calculator

Model one fill

One decibasis point is 0.1 basis point, or 0.001%. The order parameter is a whole number in decibasis points.

Enter the visible order assumptions, then calculate the fee. The preview does not submit an order or change an approval.

Builder fees are additional to protocol maker or taker fees, funding, spread, slippage, and any HIP-3 deployer fee. Use the full fee calculator for those separate assumptions.

This tool performs a public read only. It does not offer wallet connection, signatures, approvals, order routing, or builder-code monetization for HypeBasis.

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Sources and corrections

Risk disclaimer

Risk notice
Crypto perpetuals and leveraged trading are high risk. You can lose money through liquidation, funding, slippage, oracle issues, protocol failures, and market volatility.

Sources

4 references · Expand
  • Hyperliquid Docs: Builder codesAccessed 2026-08-25
    Supports: Builder-fee approval mechanics, tenths-of-a-basis-point order parameters, public maximum reads, perps and spot limits, active-approval limits, spot-side applicability, revocation, claiming, and visible builder-code economics.
  • Hyperliquid Docs: Info endpointAccessed 2026-09-04
    Supports: Public info endpoint families used for market, book, candle, account, portfolio, native borrow/lend reserve, vaultDetails, userFees account-rate, and maxBuilderFee approval reads.
  • Hyperliquid Docs: Account abstraction modesAccessed 2026-08-25
    Supports: The requirement that builder-code addresses use Standard mode to accrue builder fees.
  • Hyperliquid Docs: FeesAccessed 2026-08-26
    Supports: Rolling 14-day volume tiers, perps and spot fee schedules, HIP-3 deployer fee scale and growth mode, strict HYPE staking-tier thresholds and discounts, referral fee formula and limits, staking-account linking risks, fee-model caveats, fee distribution to HLP, the assistance fund, and deployers, the assistance fund system address, and burn recognition of assistance-fund HYPE.