> ## Documentation Index
> Fetch the complete documentation index at: https://docs.biconomy.io/llms.txt
> Use this file to discover all available pages before exploring further.

# PropAMM

> Market-making infrastructure on Base and BNB Smart Chain. Makers bring prices and inventory. Biconomy runs the contracts, the gas and the route to aggregators.

Biconomy PropAMM is market-making infrastructure for onchain liquidity. The maker brings prices and inventory. Biconomy provides the contracts, keeps the maker's book onchain, pays the gas, enforces the maker's protections and connects the book to aggregators.

<CardGroup cols={3}>
  <Card title="Live in days" icon="rocket">
    One provider contract and one WebSocket connection. No contracts to write or audit.
  </Card>

  <Card title="Zero gas" icon="gas-pump">
    The maker streams signed prices. Biconomy sends and pays for every transaction.
  </Card>

  <Card title="Flow from day one" icon="route">
    Aggregators already quote and swap against the venue.
  </Card>
</CardGroup>

## Why it matters

<img className="pa-fig pa-fig-wide-light" src="https://mintcdn.com/biconomy-73bb4454/40CFSb7K3hPGZ20b/images/propamm/flywheel-wide-light.svg?fit=max&auto=format&n=40CFSb7K3hPGZ20b&q=85&s=ffa91695343cef651a8dcb8f05821fac" alt="One maker's cycle: no infrastructure cost, so a tighter spread; the tighter quote wins the aggregator route; more volume, which lets the maker keep the spread tight." width="900" height="300" data-path="images/propamm/flywheel-wide-light.svg" />

<img className="pa-fig pa-fig-wide-dark" src="https://mintcdn.com/biconomy-73bb4454/40CFSb7K3hPGZ20b/images/propamm/flywheel-wide-dark.svg?fit=max&auto=format&n=40CFSb7K3hPGZ20b&q=85&s=04c66d40065c4e5590016615b0d7353a" alt="One maker's cycle: no infrastructure cost, so a tighter spread; the tighter quote wins the aggregator route; more volume, which lets the maker keep the spread tight." width="900" height="300" data-path="images/propamm/flywheel-wide-dark.svg" />

<img className="pa-fig pa-fig-narrow-light" src="https://mintcdn.com/biconomy-73bb4454/40CFSb7K3hPGZ20b/images/propamm/flywheel-light.svg?fit=max&auto=format&n=40CFSb7K3hPGZ20b&q=85&s=ea86fb7ecc11432cb52067e9046900ed" alt="One maker's cycle: no infrastructure cost, so a tighter spread; the tighter quote wins the aggregator route; more volume, which lets the maker keep the spread tight." width="480" height="248" data-path="images/propamm/flywheel-light.svg" />

<img className="pa-fig pa-fig-narrow-dark" src="https://mintcdn.com/biconomy-73bb4454/40CFSb7K3hPGZ20b/images/propamm/flywheel-dark.svg?fit=max&auto=format&n=40CFSb7K3hPGZ20b&q=85&s=8ecf0d7b093669a8d4c4da23605819d6" alt="One maker's cycle: no infrastructure cost, so a tighter spread; the tighter quote wins the aggregator route; more volume, which lets the maker keep the spread tight." width="480" height="248" data-path="images/propamm/flywheel-dark.svg" />

A maker's spread has to cover its costs and its risk. On PropAMM the gas and infrastructure cost is zero, so the spread only has to cover risk and the maker can quote tighter. Aggregators route each trade to the best price, so the tighter quote wins more trades. More volume at a thin margin earns more than little volume at a wide one, which lets the maker keep the spread tight.

## Get started

<CardGroup cols={2}>
  <Card title="Market makers" icon="chart-line" href="/propamm/makers/quickstart">
    Deploy a provider contract and stream a signed ladder.
  </Card>

  <Card title="Aggregators" icon="arrows-split-up-and-left" href="/propamm/aggregators/quickstart">
    One `eth_call` to quote, one `swap` to fill.
  </Card>
</CardGroup>

## Chains

| Chain                | Status                       |
| -------------------- | ---------------------------- |
| Base (8453)          | Live                         |
| BNB Smart Chain (56) | Live                         |
| Base Sepolia (84532) | Testnet with mintable tokens |

Addresses are on the [Addresses](/propamm/reference/addresses) page. Questions or onboarding: [support@biconomy.io](mailto:support@biconomy.io).