Query Onchain Data

This lets you run SQL queries against onchain data on Base (blocks, transactions, decoded events) and pay per query using x402 micropayments. It's built on Coinbase's CDP SQL API and uses CoinbaseQL, a ClickHouse dialect. The main thing to know is that queries against the events table must filter on indexed fields (event_signature, contract address, or block_timestamp) or you'll hit performance walls. The skill handles wallet status checks and constructs the npx awal commands with proper escaping to avoid shell injection. Useful when you need to pull Transfer events, analyze contract activity, or grab transaction history without running your own node. The micropayment model means you pay only for what you query, though you need the authenticate-wallet skill set up first.

Install to Claude Code

npx -y skills add coinbase/agentic-wallet-skills --skill query-onchain-data --agent claude-code