How to read and query onchain data — events, The Graph, Dune, Ponder, Multicall3, and WebSocket subscriptions. Why you cannot loop through blocks and what to use instead.
Scanned 9/5/2026
Install to Claude Code
Skills Directorynpx -y skills add BankrBot/skills --skill ethskills-indexing --agent claude-codeInstalls into .claude/skills of the current project.
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---
name: Indexing
description: "How to read and query onchain data — events, The Graph, Dune, Ponder, Multicall3, and WebSocket subscriptions. Why you cannot loop through blocks and what to use instead."
metadata:
homepage: https://ethskills.com
install: external
---
# Indexing
Provided by EthSkills. Installs outside this repo — see `catalog.json` `install.command`.
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