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starknet-defi Execute DeFi operations on Starknet including token swaps via avnu aggregator, DCA recurring buys, STRK staking, and lending/borrowing. Supports gasless transactions.
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Baseado na classificação ocupacional SOC
name starknet-defi description Execute DeFi operations on Starknet including token swaps via avnu aggregator, DCA recurring buys, STRK staking, and lending/borrowing. Supports gasless transactions. license Apache-2.0 metadata {"author":"starknet-agentic","version":"1.0.0","org":"keep-starknet-strange"} keywords ["starknet","defi","swap","dca","staking","lending","avnu","ekubo","jediswap","zklend","nostra","aggregator","yield"] allowed-tools ["Bash","Read","Write","Glob","Grep","Task"] user-invocable true
Starknet DeFi Skill
Execute DeFi operations on Starknet using avnu aggregator and native protocols.
When to Use
Swaps, DCA orders, staking, and lending or borrowing flows on Starknet.
Agent workflows that need AVNU routing, paymaster support, or protocol-specific DeFi execution.
When NOT to Use
Plain wallet management without DeFi intent.
Cairo contract authoring, deployment operations, or security auditing.
Quick Start
Install the AVNU + starknet.js dependencies and point the skill at a funded Starknet account.
Use skills catalog when the flow expands into wallet setup, deployment, or auditing.
Prerequisites npm install starknet@^8.9.1 @avnu/avnu-sdk@^4.0.1
Token Swaps (avnu SDK v4)
Get Quote and Execute Swap import { getQuotes, executeSwap, type QuoteRequest } from "@avnu/avnu-sdk" ;
import { Account , RpcProvider , ETransactionVersion } from "starknet" ;
const provider = new RpcProvider ({ nodeUrl : process.env .STARKNET_RPC_URL });
const account = new Account ({
provider,
address,
signer : privateKey,
transactionVersion : ETransactionVersion .V3 ,
});
import { fetchVerifiedTokenBySymbol } from '@avnu/avnu-sdk' ;
const eth = await fetchVerifiedTokenBySymbol ('ETH' );
const strk = await fetchVerifiedTokenBySymbol ('STRK' );
const quoteParams : QuoteRequest = {
sellTokenAddress : eth.address ,
buyTokenAddress : strk.address ,
sellAmount : BigInt (10 ** 17 ),
takerAddress : account.address ,
};
const quotes = await getQuotes (quoteParams);
const bestQuote = quotes[0 ];
const result = await executeSwap ({
provider : account,
quote : bestQuote,
slippage : 0.01 ,
executeApprove : true ,
});
console .log ("Tx:" , result.transactionHash );
Quote Response Fields (SDK v4) interface Quote {
quoteId : string ;
sellTokenAddress : string ;
buyTokenAddress : string ;
sellAmount : bigint ;
buyAmount : bigint ;
sellAmountInUsd : number ;
buyAmountInUsd : number ;
priceImpact : number ;
gasFeesInUsd : number ;
routes : Array <{
name : string ;
percent : number ;
}>;
fee : {
avnuFees : bigint ;
integratorFees : bigint ;
};
}
Build Swap Calls (for multicall composition) import { quoteToCalls } from "@avnu/avnu-sdk" ;
const calls = await quoteToCalls ({
quote : bestQuote,
takerAddress : account.address ,
slippage : 0.01 ,
includeApprove : true ,
});
Gasless Swap (Pay Gas in Token) - SDK v4 + PaymasterRpc import { getQuotes, executeSwap } from "@avnu/avnu-sdk" ;
import { PaymasterRpc } from "starknet" ;
const quotes = await getQuotes (quoteParams);
const bestQuote = quotes[0 ];
const paymaster = new PaymasterRpc ({
nodeUrl : process.env .AVNU_PAYMASTER_URL || "https://starknet.paymaster.avnu.fi" ,
});
const result = await executeSwap ({
provider : account,
quote : bestQuote,
slippage : 0.01 ,
executeApprove : true ,
paymaster : {
active : true ,
provider : paymaster,
params : {
feeMode : {
mode : "default" ,
gasToken : "0x053c91253bc9682c04929ca02ed00b3e423f6710d2ee7e0d5ebb06f3ecf368a8" ,
},
},
},
});
DCA (Dollar Cost Averaging)
Create DCA Order import { executeCreateDca } from "@avnu/avnu-sdk" ;
import moment from "moment" ;
const dcaOrder = {
sellTokenAddress : usdcAddress,
buyTokenAddress : strkAddress,
totalAmount : parseUnits ("100" , 6 ),
numberOfOrders : 10 ,
frequency : moment.duration (1 , "day" ),
startAt : Math .floor (Date .now () / 1000 ),
};
const result = await executeCreateDca ({
provider : account,
order : dcaOrder,
});
Check and Cancel DCA import { getDcaOrders, executeCancelDca, DcaOrderStatus } from "@avnu/avnu-sdk" ;
const orders = await getDcaOrders ({
traderAddress : account.address ,
status : DcaOrderStatus .OPEN ,
});
await executeCancelDca ({
provider : account,
orderAddress : orders[0 ].orderAddress ,
});
STRK Staking
Stake STRK import { executeStake, getAvnuStakingInfo } from "@avnu/avnu-sdk" ;
const stakingInfo = await getAvnuStakingInfo ();
const result = await executeStake ({
provider : account,
poolAddress : stakingInfo.pools [0 ].address ,
amount : parseUnits ("100" , 18 ),
});
Get User Staking Info import { getUserStakingInfo } from "@avnu/avnu-sdk" ;
const userInfo = await getUserStakingInfo (TOKENS .STRK , account.address );
console .log ("Staked:" , userInfo.amount );
console .log ("Unclaimed rewards:" , userInfo.unclaimedRewards );
Claim Rewards import { executeClaimRewards } from "@avnu/avnu-sdk" ;
await executeClaimRewards ({
provider : account,
poolAddress : poolAddress,
restake : true ,
});
Unstake import { executeInitiateUnstake, executeUnstake } from "@avnu/avnu-sdk" ;
await executeInitiateUnstake ({
provider : account,
poolAddress : poolAddress,
amount : parseUnits ("50" , 18 ),
});
await executeUnstake ({
provider : account,
poolAddress : poolAddress,
});
Market Data
Token Prices import { getPrices, fetchTokens, fetchVerifiedTokenBySymbol } from "@avnu/avnu-sdk" ;
const strk = await fetchVerifiedTokenBySymbol ("STRK" );
const prices = await getPrices ([ethAddress, strkAddress, usdcAddress]);
const tokens = await fetchTokens ({ page : 0 , size : 20 , tags : ["verified" ] });
Protocol Reference Protocol Operations Notes avnu Swap aggregation, DCA, gasless Best-price routing across all DEXs Ekubo AMM, concentrated liquidity Highest TVL on Starknet JediSwap AMM, classic pools V2 with concentrated liquidity zkLend Lending, borrowing Variable and stable rates Nostra Lending, borrowing Multi-asset pools
Configuration Variable Purpose Default STARKNET_RPC_URLStarknet JSON-RPC endpoint Required STARKNET_ACCOUNT_ADDRESSAgent's account address Required STARKNET_PRIVATE_KEYAgent's signing key Required AVNU_BASE_URLavnu API base URL https://starknet.api.avnu.fiAVNU_PAYMASTER_URLavnu paymaster URL https://starknet.paymaster.avnu.fiAVNU_API_KEYOptional avnu integrator key None
avnu URL Reference Network API URL Paymaster URL Mainnet https://starknet.api.avnu.fihttps://starknet.paymaster.avnu.fiSepolia https://sepolia.api.avnu.fihttps://sepolia.paymaster.avnu.fi
Error Handling async function safeSwap (account, quote, slippage = 0.01 ) {
try {
return await executeSwap ({
provider : account,
quote,
slippage,
executeApprove : true ,
});
} catch (error) {
if (error.message ?.includes ("INSUFFICIENT_BALANCE" )) {
throw new Error ("Not enough tokens for swap" );
}
if (error.message ?.includes ("SLIPPAGE" ) || error.message ?.includes ("Insufficient tokens received" )) {
return await executeSwap ({
provider : account,
quote,
slippage : slippage * 2 ,
executeApprove : true ,
});
}
if (error.message ?.includes ("QUOTE_EXPIRED" )) {
throw new Error ("Quote expired. Please retry the operation." );
}
if (error.message ?.includes ("INSUFFICIENT_LIQUIDITY" )) {
throw new Error ("Insufficient liquidity. Try a smaller amount." );
}
throw error;
}
}
References 