defi

DeFi 🏦

Decentralized Finance protocol management across multiple chains.

💎 Referral Configuration

This skill routes swaps through aggregators with referral fees to support development.

Chain	Aggregator	Fee	Referrer
EVM (ETH/ARB/POLY)	1inch	0.3%	0x890CACd9dEC1E1409C6598Da18DC3d634e600b45
Solana	Jupiter	0.2%	8KDDpruBwpTzJLKEcfv8JefKSVYWYE53FV3B2iLD6bNN
Cross-chain	LI.FI	0.3%	CyberPay integrator

Quick Commands

Get Token Price

# ETH price via CoinGecko (free, no API key)
curl -s "https://api.coingecko.com/api/v3/simple/price?ids=ethereum&vs_currencies=usd" | jq '.ethereum.usd'

# Multiple tokens
curl -s "https://api.coingecko.com/api/v3/simple/price?ids=ethereum,bitcoin,solana&vs_currencies=usd" | jq '.'

Get DeFi Yields (DefiLlama - Free)

# Top yields across all protocols
curl -s "https://yields.llama.fi/pools" | jq '[.data | sort_by(-.apy) | .[:10] | .[] | {pool: .pool, project: .project, chain: .chain, apy: .apy, tvl: .tvlUsd}]'

# Filter by chain
curl -s "https://yields.llama.fi/pools" | jq '[.data | .[] | select(.chain == "Ethereum") | {pool: .pool, project: .project, apy: .apy}] | sort_by(-.apy) | .[:10]'

# Filter by token (e.g., USDC)
curl -s "https://yields.llama.fi/pools" | jq '[.data | .[] | select(.symbol | contains("USDC")) | {pool: .pool, project: .project, chain: .chain, apy: .apy}] | sort_by(-.apy) | .[:10]'

Get Protocol TVL

# All protocols TVL
curl -s "https://api.llama.fi/protocols" | jq '[.[:20] | .[] | {name: .name, tvl: .tvl, chain: .chain}]'

# Specific protocol
curl -s "https://api.llama.fi/protocol/aave" | jq '{name: .name, tvl: .tvl, chains: .chains}'

Swap Tokens (EVM Chains)

Via 1inch (Ethereum, Polygon, Arbitrum, etc.)

# Configuration
API_KEY="${ONEINCH_API_KEY}"
CHAIN_ID="1"  # 1=ETH, 137=Polygon, 42161=Arbitrum
REFERRER="0x890CACd9dEC1E1409C6598Da18DC3d634e600b45"
FEE="0.3"

# Get quote
SRC="0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE"  # ETH
DST="0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"  # USDC
AMOUNT="1000000000000000000"  # 1 ETH

curl -s "https://api.1inch.dev/swap/v6.0/${CHAIN_ID}/quote" \
  -H "Authorization: Bearer ${API_KEY}" \
  -G \
  --data-urlencode "src=${SRC}" \
  --data-urlencode "dst=${DST}" \
  --data-urlencode "amount=${AMOUNT}" \
  --data-urlencode "fee=${FEE}" | jq '{
    srcAmount: .srcAmount,
    dstAmount: .dstAmount,
    gas: .gas
  }'

Via Jupiter (Solana)

# Get quote
INPUT_MINT="So11111111111111111111111111111111111111112"  # SOL
OUTPUT_MINT="EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"  # USDC
AMOUNT="1000000000"  # 1 SOL
PLATFORM_FEE_BPS="20"  # 0.2%

curl -s "https://api.jup.ag/swap/v1/quote?inputMint=${INPUT_MINT}&outputMint=${OUTPUT_MINT}&amount=${AMOUNT}&slippageBps=50&platformFeeBps=${PLATFORM_FEE_BPS}" | jq '{
  inAmount: .inAmount,
  outAmount: .outAmount,
  priceImpact: .priceImpactPct
}'

Cross-Chain Bridge (LI.FI)

# Bridge USDC from Ethereum to Arbitrum
FROM_CHAIN="1"
TO_CHAIN="42161"
FROM_TOKEN="0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"
TO_TOKEN="0xaf88d065e77c8cC2239327C5EDb3A432268e5831"
AMOUNT="100000000"  # 100 USDC
INTEGRATOR="CyberPay"
FEE="0.003"

curl -s "https://li.quest/v1/quote" \
  -G \
  --data-urlencode "fromChain=${FROM_CHAIN}" \
  --data-urlencode "toChain=${TO_CHAIN}" \
  --data-urlencode "fromToken=${FROM_TOKEN}" \
  --data-urlencode "toToken=${TO_TOKEN}" \
  --data-urlencode "fromAmount=${AMOUNT}" \
  --data-urlencode "integrator=${INTEGRATOR}" \
  --data-urlencode "fee=${FEE}" | jq '{
    bridge: .toolDetails.name,
    output: .estimate.toAmount,
    time: .estimate.executionDuration
  }'

Check Wallet Balances

EVM (via Alchemy/Infura)

WALLET="0x..."
RPC_URL="${ETH_RPC_URL:-https://eth.llamarpc.com}"

# ETH balance
curl -s -X POST "$RPC_URL" \
  -H "Content-Type: application/json" \
  -d "{\"jsonrpc\":\"2.0\",\"method\":\"eth_getBalance\",\"params\":[\"$WALLET\",\"latest\"],\"id\":1}" | jq -r '.result' | xargs printf "%d\n" | awk '{print $1/1e18 " ETH"}'

Solana

WALLET="..."
RPC_URL="${SOLANA_RPC_URL:-https://api.mainnet-beta.solana.com}"

curl -s -X POST "$RPC_URL" \
  -H "Content-Type: application/json" \
  -d "{\"jsonrpc\":\"2.0\",\"id\":1,\"method\":\"getBalance\",\"params\":[\"$WALLET\"]}" | jq '.result.value / 1e9'

Supported Chains

Chain	ID	RPC	DEX
Ethereum	1	eth.llamarpc.com	1inch, Uniswap
Arbitrum	42161	arb1.arbitrum.io/rpc	1inch, Camelot
Polygon	137	polygon-rpc.com	1inch, QuickSwap
Optimism	10	mainnet.optimism.io	1inch, Velodrome
Base	8453	mainnet.base.org	1inch, Aerodrome
Solana	-	api.mainnet-beta.solana.com	Jupiter

Free APIs (No Key Required)

Service	Use Case	URL
CoinGecko	Token prices	api.coingecko.com
DefiLlama	Yields, TVL	api.llama.fi
LlamaRPC	EVM RPC	eth.llamarpc.com
Jupiter	Solana swaps	api.jup.ag
LI.FI	Cross-chain	li.quest

Safety Rules

1. ALWAYS display swap details and wait for user confirmation
2. WARN if price impact > 1%
3. WARN if slippage > 3%
4. CHECK token allowances before EVM swaps
5. VERIFY bridge security for cross-chain transfers
6. NEVER execute transactions without explicit approval

Error Handling

Error	Cause	Solution
insufficient funds	Low balance	Check wallet balance
no route found	No liquidity	Try smaller amount
slippage exceeded	Price moved	Increase slippage or retry
rate limited	Too many requests	Wait and retry

Example Interactions

User: "What's the best yield for USDC?"
→ Query DefiLlama yields API
→ Filter by USDC pools
→ Display top 5 by APY with protocol and chain

User: "Swap 1 ETH for USDC"
→ Get quote from 1inch (with 0.3% referral fee)
→ Display: amount, price impact, gas estimate
→ Ask for confirmation
→ Return transaction data for signing

User: "Bridge 100 USDC from ETH to Arbitrum"
→ Get quote from LI.FI (with 0.3% integrator fee)
→ Display: bridge, output amount, estimated time
→ Ask for confirmation
→ Return transaction data

Links

• DefiLlama
• 1inch
• Jupiter
• LI.FI