Uniswap V4.

Uniswap V4.

Introduction

Hooked pools are excluded from building; hookless pools with a fee tier are supported.

Status

builder live

Fee key

fee tier

Refuel cap

/

per vault

/

immutable

Refuel window

24h

Uniswap V4

Introduction

Hooked pools are excluded from building; hookless pools with a fee tier are supported.

Status

builder live

Fee key

fee tier

Refuel cap

Refuel window

24h

Uniswap V4
Uniswap V4
A ladder, rung by rung

Parameters

Parameters

Hooked pools are excluded from building; hookless pools with a fee tier are supported.

Refuel cap and window are set per vault, at deployment, and are immutable. One bursar has one allowance, however many venues it builds into. It is fixed when that launch’s vault is deployed and cannot be raised by anyone, including us.

Uniswap V4
A ladder, rung by rung
How it works

Deploy ledger

Deploy ledger

A builder is deployed. Its address appears in the deploy ledger only from a broadcast receipt. Addresses appear here only from a broadcast receipt. No broadcast receipts recorded yet.

Positions on every venue are read regardless of builder status. Ladders are built here.

bursar

A treasury officer from block one.

No keys on this site. Every state change is a transaction you sign.

© 2026 Bursar

Nothing it can take.

Every state change is a transaction you sign—simulated before you sign, decoded, and irreversible once included.

Permissionless claiming.

Claim and sweep are public functions. Whoever calls pays the gas; proceeds always land in the vault.

One transaction to exit.

Withdraw, stop the operator, or hand the fee stream back. None of them needs anyone at Bursar, and none needs this site to be up.

bursar

A treasury officer from block one.

No keys on this site. Every state change is a transaction you sign.

Nothing it can take.

Every state change is a transaction you sign—simulated before you sign, decoded, and irreversible once included.

Permissionless claiming.

Claim and sweep are public functions. Whoever calls pays the gas; proceeds always land in the vault.

One transaction to exit.

Withdraw, stop the operator, or hand the fee stream back. None of them needs anyone at Bursar, and none needs this site to be up.

bursar

A treasury officer from block one.

No keys on this site. Every state change is a transaction you sign.

© 2026 Bursar

Nothing it can take.

Every state change is a transaction you sign—simulated before you sign, decoded, and irreversible once included.

Permissionless claiming.

Claim and sweep are public functions. Whoever calls pays the gas; proceeds always land in the vault.

One transaction to exit.

Withdraw, stop the operator, or hand the fee stream back. None of them needs anyone at Bursar, and none needs this site to be up.