Skill: ivangdavila/arbitrum (version 1.0.0)

--- name: Arbitrum description: Assist with Arbitrum One transactions, bridging, gas optimization, and L2 ecosystem navigation. metadata: {"clawdbot":{"emoji":"🔵","os":["linux","darwin","win32"]}} --- ## Network Basics - Arbitrum One is an optimistic rollup — L2 scaling for Ethereum - EVM equivalent — same tools, wallets, contracts as Ethereum - ETH is the gas token — not a separate token - ARB is governance token — not used for gas - Same addresses as Ethereum — but different network, different balances ## Bridging - Official bridge: bridge.arbitrum.io — most secure - Deposits (L1→L2): ~10 minutes — after Ethereum confirmation - Withdrawals (L2→L1): 7 days — optimistic rollup security delay - Third-party bridges faster — Hop, Across, Stargate, but add risk - Always bridge some ETH first — need gas on Arbitrum ## The 7-Day Withdrawal - Optimistic rollups assume transactions valid — fraud proofs during 7 days - Cannot speed up native bridge withdrawal — security requirement - Plan ahead for exits — don't bridge if you need funds in <7 days - Third-party bridges use liquidity — faster but fees apply - Withdrawal can be claimed after 7 days — requires L1 transaction ## Gas and Fees - Much cheaper than Ethereum mainnet — typically 10-50x lower - Two components: L2 execution + L1 data posting - L1 data costs can spike — when Ethereum is congested - Gas prices in gwei — same units as Ethereum - Fast blocks — ~0.25 seconds ## ARB Token - Governance token — vote on DAO proposals - Not used for gas — ETH pays for transactions - Airdropped to early users — claiming period ended - Staking coming — ARB staking in development - Available on major exchanges — high liquidity ## DeFi Ecosystem - GMX — largest perps DEX on Arbitrum - Uniswap, SushiSwap — major DEXs deployed - Aave, Radiant — lending protocols - Camelot — native Arbitrum DEX - Significant TVL — billions in value locked ## Wallet Configuration - MetaMask works natively — add network from chainlist.org - Chain ID: 42161 — RPC: https://arb1.arbitrum.io/rpc - Block explorer: arbiscan.io — verify transactions - Same seed as Ethereum — different network selection ## Arbitrum Nova - Separate chain from Arbitrum One — optimized for gaming/social - Lower fees than One — less security guarantees - Different bridge — don't confuse with One - Chain ID: 42170 — verify you're on correct chain ## Stylus - Run Rust, C, C++ contracts — not just Solidity - WASM-based execution — alongside EVM - Coming feature — expands developer options - Same security as EVM contracts — audited runtime ## Common Issues - "Insufficient ETH for gas" — need ETH, not just tokens - Wrong network — sent to Arbitrum address on Ethereum (recoverable but complex) - Withdrawal pending — 7-day wait is normal, not stuck - Transaction reverted — check slippage, approvals, balance - "Network not found" — add Arbitrum network to wallet ## Sequencer - Single sequencer currently — Offchain Labs operated - Centralization concern — decentralization roadmap exists - Sequencer can't steal funds — only order transactions - If sequencer down — delayed but not lost, can force include - Decentralized sequencer coming — DAO governance ## Security - Same security as Ethereum for assets — after 7-day challenge period - Smart contracts same risks — audit status matters - Fraud proof protects users — invalid state transitions challenged - Bridge is secured by Ethereum — L1 is the settlement layer - Use official bridge for large amounts — third-party bridges add risk


Security scan verdicts — ClawScan: clean | static analysis: clean | VirusTotal: clean | SkillSpector: clean (LOW)