Why Flint beats building your own prop AMM.

Over half of Solana's DEX volume routes through aggregators. Flint runs the on-chain books and matches that flow, so your quoting logic just plugs in. No prop AMM to build, no stack to run.

Start quoting → See the API

SOL/USDC flow via Jupiter · DFlow · Titan

▲ +0.12%

1.5104 last

pricesize

1.5120 15.8

1.5116 11.3

1.5112 7.9

1.5108 4.4

mid 1.5104 4 bps

1.5102 1.3

1.5101 2.0

1.5100 3.4

1.5098 5.2

Demo order book · not live data

01 · Why Flint

The AMM is the easy part. Everything around it is the job.

Matching, priority fees, landing, risk, custody, RPCs, aggregator integrations. That is the stack behind one quote. Building it yourself is a second company.

Most of the work in market making never touches the pricing. It is the plumbing around the price: getting transactions to land, keeping keys safe, staying live through a bad window, being where the flow already is. Flint built that plumbing on-chain so you can skip it and go straight to quoting.

Priority fees Bid per block. Re-estimate on every quote. Absorb the landings that miss. Managed

Transaction landing Jito tips, retries, preflight checks, RPC failover, an alert at 2am. Included

Quote refreshes Rewrite the whole order every tick, state, fees, and compute included. One field per tick

Matching engine Write the pro-rata allocation, get it audited, hold the liability. On-chain pro-rata

Risk tooling Staleness guards, spread widening, kill switches. All yours to build. SpreadProtect + staleness

Custody posture Key management for a desk that has never touched Solana. Cold admin · hot quoter

RPC infrastructure Self-host nodes or pay per request and hope they keep up. None to run

Aggregator routes Integrate Jupiter, DFlow, Titan, and OKX DEX one by one. Pre-wired

Everything above Multiple teams, a roadmap, and an ops rotation One API

02 · How it works

Your quotes meet taker flow on-chain.

A multi-maker prop AMM merges every maker's quoting intents into one virtual book and fills pro-rata. One desk is never locked into one AMM curve.

Each maker sends its quoting intents: a CEX-style order list, an oracle-offset ladder that re-sends a single fair-price field each tick, or a linear distribution curve. Flint merges all of them into one virtual book. When a taker order arrives, the book fills pro-rata at each price level, so the makers quoting there split the flow in proportion to what they posted.

Flint handles the rest of the stack: priority fees, transaction landing, RPCs. Your flow comes pre-wired from Jupiter, DFlow, and Titan, with OKX DEX on the way.

SOL/USDC one level @ 1.5104

pro-rata

Maker A

2.5 SOL · 25%

Maker B

5.0 SOL · 50%

Maker C

2.5 SOL · 25%

Taker buys 4.0 SOL

Maker A 1.0 SOL Maker B 2.0 SOL Maker C 1.0 SOL

B quotes 5.0 of the 10.0 at this level, so it takes half the fill.

Illustrative · demo fills, not live data

03 · The details

Built for desks that want to quote, not learn Solana.

SDKs, risk guards, capital recycling, custody hygiene. The layer that makes a desk's life genuinely easier.

Capital recycles itself. A SOL ask brings in USDC, and that same USDC backs your SOL bid, so a two-sided book runs from a one-sided deposit. Each quote level carries a staleness byte, so you always know the age of the fair price. SpreadProtect widens the spread in risk windows, post-only mode keeps you out of toxic flow, and isolated USDC mini-books give you synthetic crosses like JTO/SOL derived on demand.

Your maker_id is set up by the Flint team, custody splits cold admin keys from hot quoting keys, and the Rust and Python SDKs speak plain gRPC. Standard APIs, and no Solana stack to learn before you can quote.

Start quoting →

04 · Proof

Quote where the volume already is.

Flint's own numbers, from their piece on lowering the barriers to quoting on Solana.

Solana is the #1 DEX chain by volume, with 54% of global spot DEX volume in the last six months. Over half of Solana's DEX volume moves through aggregators, and 35.1M addresses trade there monthly. That is where the flow already is, and Flint is wired into the pipes that carry it.

The team shipped on Solana and ran real desks before they built this: people from the dYdX Foundation, Jito Labs, Jump, and Anza.

Source: Flint · "Lowering the barriers to quoting on Solana" · Aug 2026

Backed by Audited by

Start quoting on Solana without retooling your desk.

Start quoting → See the docs

Bounty entry · before Sept‑7 · tag @flint_trade_