Prazwal

Web3 & Backend Engineer | DeFi Infrastructure | Open Source

[Prazwal @RattiPrazwal]

I just shipped @swap-kit/core to npm.

Here's the problem it solves:

To offer best swap execution today, a dev has to wire up:
→ Uniswap v4 (PoolKey construction, singleton PoolManager, hook-aware routing)
→ 1inch Fusion+ (EIP-712 intents, HTLC secrets, resolver polling)
→ Paraswap (quote call, then separate build call, different ABI)

3 SDKs. 3 auth systems. 3 failure modes. 3–4 weeks of plumbing before you write a single line of product code.

SwapKit collapses all three into one intent:

const quotes = await sdk.quote({
fromToken: "ETH",
toToken: "USDC",
fromAmount: parseEther("1"),
fromChainId: 1,
});
// routes ranked by net output after MEV

What runs under the hood (proof in replies 👇):

1. Parallel quote fan-out → v4, Fusion+, Paraswap simultaneously
2. Rust sidecar analyses sandwich risk against recent mempool blocks
3. High MEV risk → auto-reroutes through Flashbots private mempool
4. Routes ranked by net output (amountOut − estimatedMEV − gasCost)

That net vs gross ranking difference is enormous on swaps above $10k.

My test run just now:
🏆 Winning Protocol: UNISWAP-V4
🛡️ MEV Protection: Active (Sandwich Risk Mitigated)

This is Phase 1. Next: drop-in <SwapWidget /> for Next.js + custom v4 hooks.

Looking for early testers and developer feedback! Drop a 🚀 below if you want the GitHub link!

#Web3 #DeFi #Ethereum #BuildInPublic

[Atrium Academy @AtriumAcademy]

UHI10 met for the first time today. here's a room full of eager faces ready to learn best practices for building uniswap v4 hooks

build theme this cohort: sustainable liquidity and MEV protection. excited to see what they ship 🎉

[Prazwal @RattiPrazwal]

@0xmishoko Happy to be on this new journey with you! 🙌🏼🙌🏼 Let’s catch up sometime.

[Prazwal @RattiPrazwal]

ApiForge 0.4.0 ships native AWS support:

🔐 secrets from SSM Parameter Store (${ssm:/app/token})
📦 ECR auth + auto-create repos
☸️ EKS deploy + rollout watch
🌐 CloudFront cache invalidation
↩️ auto-rollback on failure
One command. cargo install apiforge

https://t.co/QAlUrz58Gb

#Rust #Backend #developer #AWS #devops @Docker @kubernetesio @awscloud

[Prazwal @RattiPrazwal]

ApiForge 0.4.0 ships native AWS support:

🔐 secrets from SSM Parameter Store (${ssm:/app/token})
📦 ECR auth + auto-create repos
☸️ EKS deploy + rollout watch
🌐 CloudFront cache invalidation
↩️ auto-rollback on failure
One command. cargo install apiforge

https://t.co/QAlUrz58Gb

#Rust #Backend #developer #AWS #devops @Docker @kubernetesio @awscloud

[Prazwal @RattiPrazwal]

SwapKit v0.2.0 shipped 🚀

Added this week:
⚡ Real Uniswap V4 on-chain quotes — live V4Quoter, 4 fee tiers in parallel
🛡️ MEV risk engine now values trades in native-token wei — accurate sandwich scoring for any token pair
🔑 Full Permit2 two-leg approval flow — ERC-20 → V4 swaps actually execute
🔒 Flashbots Protect auto-activated on high MEV risk
220+ checks. Fork-verified with real txs.
npm i @swap-kit/core
npm i @swap-kit/cli

https://t.co/WSiE5jULh1

#DeFi #Uniswaphooks
@Uniswap @1inch @VeloraDEX @AtriumAcademy

[Prazwal @RattiPrazwal]

SwapKit v0.2.0 shipped 🚀

Added this week:
⚡ Real Uniswap V4 on-chain quotes — live V4Quoter, 4 fee tiers in parallel
🛡️ MEV risk engine now values trades in native-token wei — accurate sandwich scoring for any token pair
🔑 Full Permit2 two-leg approval flow — ERC-20 → V4 swaps actually execute
🔒 Flashbots Protect auto-activated on high MEV risk
220+ checks. Fork-verified with real txs.
npm i @swap-kit/core
npm i @swap-kit/cli

https://t.co/WSiE5jULh1

#DeFi #Uniswaphooks
@Uniswap @1inch @VeloraDEX @AtriumAcademy

[Prazwal @RattiPrazwal]

Every DeFi developer hits the same wall.

You want to add swaps. You look at the options. Paraswap has one API shape. 1inch has another. Uniswap V4 just shipped a completely new architecture.

You spend a week just reading docs.

Then another week writing adapters.

Then another debugging why the price comparison is off.

You haven't shipped a single user-facing feature yet.

That's the wall SwapKit exists to remove.

One interface. Three DEXs. Best price. MEV protection. 7 chains.

npm install @swap-kit/core

Build the feature. Not the plumbing.

https://t.co/SVwK6JasZy

#DeFi #Rust #npm

[Prazwal @RattiPrazwal]

If you're building Uniswap V4 Hooks, you already know the address problem.
The first bits of your Hook's contract address determine which callbacks you can implement. BeforeSwap, AfterSwap, BeforeAddLiquidity ,each maps to a specific bit pattern.
You can't deploy to an arbitrary address and get the permissions you need. You have to mine the right address using CREATE2.
That means: Keccak256(0xff ++ deployer ++ salt ++ keccak256(bytecode)) , iterated until the prefix matches.
SwapKit's Rust engine exposes a /mine endpoint that does this at full CPU utilization using rayon.

POST /mine { deployer, bytecode, prefix: "40" }

Semaphore(2) caps concurrent jobs. 30s timeout. Cancellation token halts all threads the moment a match lands.
You get back the winning salt. One POST. Done.

cargo install swap-kit-engine

Stop mining by hand. Ship the Hook. https://t.co/SVwK6JasZy

@Uniswap @AtriumAcademy #UniswapV4 #Hooks #Rust

[Prazwal @RattiPrazwal]

If you're building Uniswap V4 Hooks, you already know the address problem.
The first bits of your Hook's contract address determine which callbacks you can implement. BeforeSwap, AfterSwap, BeforeAddLiquidity ,each maps to a specific bit pattern.
You can't deploy to an arbitrary address and get the permissions you need. You have to mine the right address using CREATE2.
That means: Keccak256(0xff ++ deployer ++ salt ++ keccak256(bytecode)) , iterated until the prefix matches.
SwapKit's Rust engine exposes a /mine endpoint that does this at full CPU utilization using rayon.

POST /mine { deployer, bytecode, prefix: "40" }

Semaphore(2) caps concurrent jobs. 30s timeout. Cancellation token halts all threads the moment a match lands.
You get back the winning salt. One POST. Done.

cargo install swap-kit-engine

Stop mining by hand. Ship the Hook. https://t.co/SVwK6JasZy

@Uniswap @AtriumAcademy #UniswapV4 #Hooks #Rust

[Prazwal @RattiPrazwal]

Every DeFi developer hits the same wall.

You want to add swaps. You look at the options. Paraswap has one API shape. 1inch has another. Uniswap V4 just shipped a completely new architecture.

You spend a week just reading docs.

Then another week writing adapters.

Then another debugging why the price comparison is off.

You haven't shipped a single user-facing feature yet.

That's the wall SwapKit exists to remove.

One interface. Three DEXs. Best price. MEV protection. 7 chains.

npm install @swap-kit/core

Build the feature. Not the plumbing.

https://t.co/SVwK6JasZy

#DeFi #Rust #npm

[Prazwal @RattiPrazwal]

SwapKit v0.1.10 is live.

📦 npm install @swap-kit/core
🦀 cargo install swap-kit-engine
💻 npx @swap-kit/cli quote --from ETH --to USDC --amount 1

7 chains. 3 DEX protocols. MEV protection. 4 lines of code.

🔀 SwapKit: The Unified Intent Layer for DeFi
#DeFi #BuildInPublic #Rust

[Prazwal @RattiPrazwal]

1,018 downloads. Zero real security reviews.

Last week I sat down and asked: what if someone actually read every line of this code?

So I deployed 6 AI agents to do exactly that.

What they found at 2am kept me up until sunrise. 🧵

[Prazwal @RattiPrazwal]

We didn't just patch. We rethought.

The Rust engine now has a 64KB body limit, semaphore-controlled concurrency, a 30s timeout, and binds to 127.0.0.1 instead of the entire network.

One function used to return "low risk" by default.
It now returns "unknown."

Honesty > false confidence.

[Prazwal @RattiPrazwal]

Built on top of @Uniswap v4, @1inch Fusion+, and @paraswapDEX .

If anyone from these teams wants to chat about integration or has feedback on how SwapKit calls your APIs, would love to connect.

[Prazwal @RattiPrazwal]

I just shipped @swap-kit/core to npm.

Here's the problem it solves:

To offer best swap execution today, a dev has to wire up:
→ Uniswap v4 (PoolKey construction, singleton PoolManager, hook-aware routing)
→ 1inch Fusion+ (EIP-712 intents, HTLC secrets, resolver polling)
→ Paraswap (quote call, then separate build call, different ABI)

3 SDKs. 3 auth systems. 3 failure modes. 3–4 weeks of plumbing before you write a single line of product code.

SwapKit collapses all three into one intent:

const quotes = await sdk.quote({
fromToken: "ETH",
toToken: "USDC",
fromAmount: parseEther("1"),
fromChainId: 1,
});
// routes ranked by net output after MEV

What runs under the hood (proof in replies 👇):

1. Parallel quote fan-out → v4, Fusion+, Paraswap simultaneously
2. Rust sidecar analyses sandwich risk against recent mempool blocks
3. High MEV risk → auto-reroutes through Flashbots private mempool
4. Routes ranked by net output (amountOut − estimatedMEV − gasCost)

That net vs gross ranking difference is enormous on swaps above $10k.

My test run just now:
🏆 Winning Protocol: UNISWAP-V4
🛡️ MEV Protection: Active (Sandwich Risk Mitigated)

This is Phase 1. Next: drop-in <SwapWidget /> for Next.js + custom v4 hooks.

Looking for early testers and developer feedback! Drop a 🚀 below if you want the GitHub link!

#Web3 #DeFi #Ethereum #BuildInPublic

[Prazwal @RattiPrazwal]

Proof it's real.

Screenshots below:
npm install running clean (0 vulnerabilities),
the sdk.quote() call in TypeScript,
and the live output UNISWAP-V4 winning with MEV protection active.

No mock data. No staging environment. Live mainnet quote.

npm → https://t.co/yfkRFbMAGV

Docs → https://t.co/SomJT8GQp6

If you integrate and hit a rough edge, DM me. Fixed same day.

[Prazwal @RattiPrazwal]

That’s why we’re building SwapKit ,one unified Intent-Based Liquidity Layer.

One simple intent.

Best price + MEV protection.

All protocols abstracted.

SDK drops in a few days.
Curious? Follow for the full story. ⚡
#DeFi #Web3 #SwapKit #BuildInPublic

[Prazwal @RattiPrazwal]

MEV sandwiches on every public tx.

Weeks wasted on integrations.

Worse prices for your users.

We’ve seen this frustration too many times.

[Prazwal @RattiPrazwal]

DeFi swaps in 2026 are still broken.
Building a wallet or dApp?

You want users to swap ETH → USDC… but you’re forced to juggle Uniswap V4’s complex hooks, 1inch Fusion’s off-chain intents, and Paraswap’s routes.

All different. All painful. Fragmented liquidity hell. 😩