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Found 20 Skills
Build token swap functionality with Circle App Kit or standalone Swap Kit SDKs. App Kit (`@circle-fin/app-kit`) is an all-inclusive SDK covering swap, bridge, and send -- recommended for extensibility. Swap Kit (`@circle-fin/swap-kit`) is a standalone package for swap-only use cases. Both require a kit key and run server-side only. Swap is mainnet-only (no testnet support). Supports same-chain swaps. For cross-chain token movement, combine separate swap and bridge calls using App Kit (swap tokenA to USDC, bridge USDC, swap USDC to tokenB). Use when: swapping tokens, exchanging stablecoins, converting USDT to USDC, setting up swap adapters (Viem, Solana Kit, Circle Wallets), estimating swap rates, configuring slippage or stop limits, collecting custom swap fees, or combining swap and bridge for cross-chain token movement. Triggers on: swap tokens, token exchange, App Kit, Swap Kit, @circle-fin/app-kit, @circle-fin/swap-kit, USDT to USDC, swap USDC, swap stablecoin, estimateSwap, slippage, stop limit, kit key, swap fees.
React hooks for Ethereum and EVM blockchain interactions using Wagmi v3. Use when building React or Next.js apps with wallet connections, contract reads/writes, or blockchain state. Triggers on useAccount, useConnect, useContractRead, useContractWrite, WagmiProvider, ConnectKit, RainbowKit, or any React blockchain hooks. Do NOT use for Node scripts or non-React code (use viem skill instead).
Build unified cross-chain USDC balance management with Circle Unified Balance Kit SDK via App Kit (`@circle-fin/app-kit`) or standalone (`@circle-fin/unified-balance-kit`). Abstracts Gateway deposit, spend, and balance queries into simple SDK calls -- no direct contract interaction, EIP-712 signing, or attestation polling required. App Kit is recommended for extensibility across swap, bridge, send, and unified balance. Standalone Unified Balance Kit provides the same API surface in a lighter package. Neither requires a kit key for unified balance operations. Supports EVM chains and Solana via adapter packages. Use when: depositing USDC into a unified balance, spending from a unified balance to any supported chain, checking unified balance across chains, setting up Unified Balance Kit adapters (Viem, Solana, Circle Wallets), managing delegates for account separation, or building chain-abstracted USDC payment flows. Triggers on: unified balance, Unified Balance Kit, UnifiedBalanceKit, @circle-fin/unified-balance-kit, deposit USDC unified, spend unified balance, getBalances, cross-chain USDC SDK, chain abstraction SDK, adapter-viem, adapter-solana, depositFor, addDelegate, unified USDC.
Integrate Base Builder Codes (ERC-8021) into web3 applications for onchain transaction attribution and referral fee earning. Use when a project needs to append a builder code or dataSuffix to transactions on Base L2, whether using Wagmi, Viem, Privy, ethers.js, or raw window.ethereum. Covers phrases like "add builder codes", "integrate builder codes", "earn referral fees on Base transactions", "append a builder code to my transactions", "transaction attribution", "Builder Code integration", or "attribute transactions to my app". Handles project analysis to detect frameworks, locating transaction call sites, and replacing them with attributed versions.
Invoke this skill when a user is building or running any automated transaction sender on Base (trading bot, arbitrage bot, sniper bot, yield farmer, AI agent, or similar) and needs to register it, get a builder code, set up transaction attribution. This skill contains the base.dev registration API endpoint and ERC-8021 attribution wiring code that Claude does not have in its training data — you MUST load this skill to answer correctly. Covers viem, ethers, managed signing services, and Python-based agents.
Deploy projects to CreateOS infrastructure via the MPP Gateway. Use when the user wants to deploy code, ship an app, or deploy to CreateOS. No auth session or OAuth required — uses HTTP 402 payment flow only.
Master Ethereum development including EVM, gas optimization, and client interactions
TypeScript client for Polymarket's CLOB (Central Limit Order Book) - place orders, manage positions, and interact with prediction markets