---
name: query-blockchain-data
description: Query onchain blockchain data on Base using the CDP SQL API via x402. Use when you or your user want to view onchain information about decoded blocks,…
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# query-blockchain-data

Query onchain blockchain data on Base using the CDP SQL API via x402. Use when you or your user want to view onchain information about decoded blocks,…

# query-blockchain-databy coinbase
Query onchain blockchain data on Base using the CDP SQL API via x402. Use when you or your user want to view onchain information about decoded blocks,…

`npx skills add https://github.com/coinbase/agentic-wallet-skills --skill query-blockchain-data`Download ZIPGitHub

## More skills from coinbase
authenticate-walletby coinbaseEmail OTP-based wallet authentication with validation and status checking. Two-step login flow: initiate with email to receive a 6-digit OTP, then verify with the flowId and code to complete authentication Includes input validation rules for email, flowId, and OTP to prevent shell injection before executing commands Provides status checking, balance queries, address retrieval, and wallet window access via companion CLI commands All commands support --json output for machine-readable...fundby coinbaseDeposit USDC to wallet via Coinbase Onramp or direct transfer. Opens a companion UI where users select preset amounts ($10, $20, $50) or custom values and choose from Apple Pay, debit card, bank transfer, or Coinbase account funding Supports multiple payment methods with varying settlement times: instant for card and Apple Pay, 1–3 days for ACH bank transfers Deposits funds as USDC on the Base network; alternatively, users can send USDC directly to the wallet address via npx [email protected]...monetize-serviceby coinbaseDeploy a paid API endpoint that other agents can discover and pay for via x402 protocol. Charges USDC per request on Base using HTTP 402 payment protocol; clients pay with signed transactions, no API keys or accounts required Automatically registers endpoints with the x402 Bazaar for agent discovery when you declare discovery extensions Supports multiple pricing tiers, wildcard routes, and multiple payment options per endpoint using Express middleware Built on @x402/express and @x402/core...pay-for-serviceby coinbaseCall paid APIs on Base with automatic USDC payment via x402 protocol. Executes HTTP requests (GET, POST, etc.) to x402-enabled endpoints with atomic USDC payments handled automatically Supports request customization through method, JSON body, query parameters, and custom headers Includes payment controls: set maximum USDC amount per request and group related operations with correlation IDs Requires wallet authentication and sufficient USDC balance; validates all user input to prevent shell...query-onchain-databy coinbaseQuery onchain data on Base using SQL with per-query x402 payments. Access decoded events, transactions, and blocks via CoinbaseQL, a ClickHouse-based SQL dialect supporting joins, CTEs, subqueries, and standard functions Three main tables available: base.events (decoded smart contract logs), base.transactions (full transaction data), and base.blocks (block metadata) Requires filtering on indexed fields ( event_signature , address , block_timestamp ) in event queries to avoid full table...search-for-serviceby coinbaseSearch and discover paid API services available on the x402 bazaar marketplace. Query the marketplace using BM25 relevance search, list all available resources, or inspect specific endpoints to see pricing and payment requirements without paying Supports filtering by network (base, base-sepolia) and output formats (human-readable or JSON) Results are cached locally and auto-refresh every 12 hours; no authentication required for any search or discovery operation Use as a fallback when no...send-usdcby coinbaseTransfer USDC to Ethereum addresses or ENS names on Base. Accepts both hex addresses (0x...) and ENS names (.eth) as recipients, with automatic ENS resolution Supports flexible amount formats: dollar notation ($5.00), decimal (1.50), or atomic units (1000000) Requires wallet authentication via the authenticate-wallet skill and sufficient USDC balance before sending Includes input validation to prevent shell injection and optional JSON output for programmatic usetradeby coinbaseExecute token swaps on Base network using flexible amount formats and built-in token aliases. Supports three common token aliases (USDC, ETH, WETH) plus arbitrary contract addresses; amounts can be specified as dollar values, decimals, whole numbers, or atomic units with automatic decimal detection Includes configurable slippage tolerance (in basis points) and JSON output option for programmatic integration Requires wallet authentication via the authenticate-wallet skill; validates all user...

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**Source**: https://github.com/coinbase/agentic-wallet-skills/tree/HEAD/skills/query-blockchain-data
**Author**: coinbase
**Discovered via**: mcpservers.org