addresses

name

addresses

description

Verified contract addresses for major Ethereum protocols across mainnet and L2s. Use this instead of guessing. SKILL.md is an index — load the appropriate references/*.md file for the addresses you need. Start with references/obol-payments.md for the Stack's own rails (USDC + OBOL + Permit2 + ERC-8004 on the supported chains). Other categories include stablecoins, staking + Obol/Splits, DEXs, lending and DeFi, L2-native protocols, infrastructure (Safe, AA, Chainlink, EigenLayer, ENS, OpenSea), bridges (CCIP, Across, Arbitrum One + Robinhood Chain canonical), Robinhood Chain, and major token addresses. Always verify on-chain via eth_getCode + eth_call before sending value.

Contract Addresses

CRITICAL: Never hallucinate a contract address. Wrong addresses mean lost funds. If an address isn't in the relevant references/ file, look it up on the block explorer or the protocol's official docs before using it.

Last verified: February 16, 2026 (addresses verified onchain via eth_getCode + eth_call).

How to find an address

Open the file that matches the category you need:

Reference	What's in it
references/obol-payments.md	Start here for anything payment-related — USDC + OBOL on the chains the Stack supports, Permit2, ERC-8004 registries, facilitator
references/stablecoins.md	USDC, USDT, DAI, WETH on mainnet + L2s
references/staking.md	Lido (stETH, wstETH, withdrawals), Rocket Pool, Obol Splits, Splits.org
references/dex.md	Uniswap V2/V3/V4, Universal Router, Permit2, 1inch, UNI token
references/defi.md	Aave, Compound, MakerDAO/Sky, sDAI, Curve, Balancer, Yearn V3
references/l2-native.md	Aerodrome (Base), Velodrome (OP), GMX, Pendle, Camelot, SyncSwap, Morpho
references/infrastructure.md	Safe, ERC-4337 EntryPoint, Chainlink, EigenLayer, OpenSea Seaport, ENS, deterministic deployer
references/bridges.md	Chainlink CCIP Router, Across SpokePool, Arbitrum One + Robinhood Chain canonical bridges
references/robinhood-chain.md	Robinhood Chain (4663) — chain metadata, canonical bridge L1+L2 contracts, tokens (bridged USDC, USDG, WETH), ecosystem notes
references/agents-and-tokens.md	ERC-8004 registries, major tokens (UNI, AAVE, COMP, MKR, LDO, WBTC, stETH, rETH)

Verify any address at runtime

# Check contract bytecode exists (returns 0x for an EOA)
sh scripts/rpc.sh code 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48

# Read contract identity
sh scripts/rpc.sh call 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 "symbol()(string)"

(scripts/rpc.sh is from the ethereum-networks skill.)

Or with cast:

cast code 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 --rpc-url http://erpc.erpc.svc.cluster.local/rpc/mainnet
# Fallback public RPC: https://eth.llamarpc.com

EIP-55 checksum: Mixed-case addresses are checksummed. Most tools validate automatically.

Multi-chain rules of thumb

• Same address on every EVM chain (CREATE2 deploys): Uniswap V3 contracts, Safe, OpenSea Seaport, ERC-4337 EntryPoint, ERC-8004 registries, Permit2, 1inch v6, Yearn V3, Splits.org (V1 + V2), Arachnid deterministic deployer.
• Different per chain — always look up: USDC, USDT, DAI, WETH, wstETH, Uniswap V4 (NOT CREATE2), Across SpokePool, Chainlink CCIP Router.
• Native vs bridged USDC: Some chains have both. Use native unless you have a specific reason not to.
• Dominant DEX on each L2 is NOT Uniswap. Aerodrome dominates Base, Velodrome dominates Optimism, Camelot is major on Arbitrum, SyncSwap dominates zkSync Era. Don't default to Uniswap — check liquidity per chain in references/l2-native.md.

Discovery resources (when an address isn't here)

• Uniswap: https://docs.uniswap.org/contracts/v3/reference/deployments/
• Aave: https://docs.aave.com/developers/deployed-contracts/deployed-contracts
• Compound V3: https://docs.compound.finance/
• Chainlink: https://docs.chain.link/data-feeds/price-feeds/addresses
• Aerodrome: https://github.com/aerodrome-finance/contracts
• Velodrome: https://github.com/velodrome-finance/contracts
• GMX: https://github.com/gmx-io/gmx-synthetics
• Pendle: https://github.com/pendle-finance/pendle-core-v2-public
• Camelot: https://docs.camelot.exchange/contracts/arbitrum/one-mainnet
• SyncSwap: https://docs.syncswap.xyz/syncswap/smart-contracts/smart-contracts
• Morpho: https://docs.morpho.org/get-started/resources/addresses/
• Lido: https://docs.lido.fi/deployed-contracts/
• Rocket Pool: https://docs.rocketpool.net/overview/contracts-integrations
• 1inch: https://docs.1inch.io/docs/aggregation-protocol/introduction
• EigenLayer: https://docs.eigenlayer.xyz/
• Obol Splits: https://docs.obol.org/learn/readme/obol-splits#deployments
• Splits.org: https://github.com/0xSplits/splits-contracts-monorepo/tree/main/packages/splits-v2/deployments
• Across: https://docs.across.to/reference/contract-addresses
• Chainlink CCIP: https://docs.chain.link/ccip/directory/mainnet
• Yearn V3: https://docs.yearn.fi/developers/addresses/v3-contracts
• CoinGecko / Token Lists / DeFi Llama for general lookups.