Design event-driven indexing plans for onchain data using The Graph, Dune, or RPC.
npx skills add https://github.com/Zodomo/DrandVerifier --skill indexing-zodomo
Please help me install this Agent Skill. Skill: indexing Source: https://github.com/Zodomo/DrandVerifier/tree/main/.opencode/skills/ethskills/indexing Command: npx skills add https://github.com/Zodomo/DrandVerifier --skill indexing-zodomo
It helps you stop trying to retrieve historical onchain data by repeatedly calling RPC for past state or scanning blocks for events, which is slow, expensive, and often impossible at scale.
Use the indexing skill to design an event-driven indexing plan for your contract by selecting which events to emit and whether to use The Graph, Dune, provider APIs, or direct RPC log reads based on expected query volume.
High-intent search queries and answers about installing and using this skill.
Retrieving historical blockchain event logs efficiently requires using dedicated indexing systems like The Graph or Dune Analytics rather than brute-force block scanning. This approach uses an event-first contract strategy, querying indexed Solidity event fields to bypass slow and expensive archive RPC calls.
Designing Solidity events for querying requires an event-first contract strategy where you mark specific event parameters as indexed. These indexed topics act as a queryable onchain API, allowing systems like The Graph to filter and retrieve historical event logs rapidly without scanning past contract state.
Use The Graph for dApp backends, activity feeds, and GraphQL querying needing low latency, while Dune Analytics suits SQL-based dashboards and broader analytics. Your choice between The Graph, Dune, provider APIs, or direct RPC log reads depends on expected query volume and scale constraints.
You do not need an archive RPC node to fetch historical onchain data for dashboards. By using an event-first indexing approach with The Graph or Dune Analytics, you retrieve historical event logs directly, avoiding the high costs and latency of repeated archive RPC state calls.
Direct RPC log reads work for blockchain indexing within small block windows, but become slow and expensive at scale. For high query volume, you should transition to dedicated indexing systems like The Graph subgraphs or provider APIs to handle historical event queries and pagination efficiently.
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