Query onchain data on Base using SQL with per-query x402 payments.
Run in your terminal
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 tab
AI-first code editor with Composer
Before installing skills in Cursor, ensure your development environment meets these requirements:
node --versionquery-onchain-dataExecute the skills CLI command in your project's root directory to begin installation:
Package manager
npx skills add https://github.com/coinbase/agentic-wallet-skills --skill query-onchain-dataFetches query-onchain-data from coinbase/agentic-wallet-skills and configures it for Cursor.
The CLI shows a list of agents. Use arrow keys and space to select Cursor:
Confirm successful installation by checking the skill directory location:
Restart Cursor to activate query-onchain-data. Access via /query-onchain-datain your agent's command palette.
We perform automated surface-level scans (Gen AI Scanner, Socket, Snyk) during installation. These checks detect common vulnerabilities but do not guarantee complete security. Always review skill source code and verify the publisher's reputation before production use.
Skills execute code in your environment. Always review source, verify the publisher, and test in isolation before production.
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Package manager
npx skills add https://github.com/coinbase/agentic-wallet-skills --skill query-onchain-dataWorks with
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Prerequisites
Time Estimate
15-45 minutes depending on use case complexity
Steps
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✓ Use when
Use when skill capabilities match your task, clear ROI on time saved, and you can validate outputs. Best for repetitive tasks, learning, and quality improvement.
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Avoid when task requires deep expertise you can't validate, involves sensitive decisions, or when learning process is more valuable than speed of completion.
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Solid pick for teams standardizing on skills: query-onchain-data is focused, and the summary matches what you get after install.
Keeps context tight: query-onchain-data is the kind of skill you can hand to a new teammate without a long onboarding doc.
We added query-onchain-data from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.
I recommend query-onchain-data for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.
Useful defaults in query-onchain-data — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.
query-onchain-data has been reliable in day-to-day use. Documentation quality is above average for community skills.
query-onchain-data reduced setup friction for our internal harness; good balance of opinion and flexibility.
I recommend query-onchain-data for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.
query-onchain-data is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.
query-onchain-data fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.
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