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Found 243 Skills
Build applications using the x402 protocol — Coinbase's open standard for HTTP-native stablecoin payments using the HTTP 402 status code. Use this skill when: - Creating APIs that require USDC payments per request (seller/server side) - Building clients or AI agents that pay for x402-protected resources (buyer/client side) - Implementing MCP servers with paid tools for Claude Desktop - Adding payment middleware to Express, Hono, or Next.js applications - Working with Base (EVM) or Solana (SVM) payment flows - Building machine-to-machine or agent-to-agent payment systems - Integrating micropayments, pay-per-use billing, or paid API access Triggers: x402, HTTP 402, payment required, USDC payments, micropayments, pay-per-use API, agentic payments, stablecoin payments, paid API endpoint, paywall middleware
Comprehensive guide for Helius - Solana's leading RPC and API infrastructure provider. Covers RPC nodes, DAS (Digital Asset Standard) API, Enhanced Transactions, Priority Fees, Webhooks, ZK Compression, LaserStream gRPC, and the Helius SDK for building high-performance Solana applications
Complete Sanctum SDK for liquid staking, LST swaps, and Infinity pool operations on Solana. Use when working with LSTs (mSOL, jitoSOL, bSOL, INF), staking SOL, swapping between liquid staking tokens, or integrating Sanctum's liquidity infrastructure.
Build with Hyperstack, real-time Solana data streaming. Covers consuming existing streams and building custom stacks. Use when the user mentions Hyperstack, real-time Solana data, on-chain streaming, ORE mining, or wants to consume/build data stacks.
Drift Protocol perpetual futures trading on Solana (direct SDK)
Metaplex development on Solana — NFTs, tokens, compressed NFTs, candy machines, token launches. Use when working with Token Metadata, Core, Bubblegum, Candy Machine, Genesis, or the mplx CLI.
Use for privacy preserving applications and ZK Solana programs. Prevents double spending using rent-free PDAs.
Execute DEX swaps on Solana, Ethereum, Base, or BSC. Use when buying or selling a token, getting a swap quote, or executing a trade.
Transfer tokens on Solana or Base. Use when the user wants to send, transfer, or pay tokens. Supports native coins (SOL, ETH) and tokens (USDC) by name, plus arbitrary tokens by mint/contract address. Covers "send SOL", "transfer USDC", "send tokens", "pay someone", "send ETH on Base", "transfer to address".
Smart contract and secure API contract security analysis — invariant checking, access control, reentrancy, and integer overflow patterns. Implements Checks-Effects-Interactions pattern, formal invariant verification, and OpenSCV vulnerability taxonomy for Solidity/EVM and Rust/Solana contracts.
This skill should be used when the user asks to "buy token", "sell token", "swap token", "trade crypto", "check trade status", "query transaction", "scan tokens", "feed", "monitor chain", "query token", "token details", "check token safety", or mentions trading on Solana/ETH/BSC/Base chains via XXYY. Enables on-chain token trading and data queries through the XXYY Open API.
Integrate Circle Gateway to hold a unified USDC balance across multiple blockchains and transfer USDC instantly (<500ms) via permissionless deposit, burn, and mint workflows. Available on 11 EVM chains + Solana (mainnet and testnet), plus Arc testnet. Use when: enabling chain-agnostic user experiences, low-latency or instant next-block finality is required, capital needs to be pooled across chains for greater capital efficiency, or building apps with consolidated crosschain balances. Triggers on: Gateway, unified balance, crosschain USDC, instant transfer, chain abstraction, Gateway Wallet, Gateway Minter, gatewayMint, burn intent, crosschain liquidity, payment routing, capital efficiency, permissionless transfer.