Blockchain Data Indexing APIs & Infrastructure

Dune provides comprehensive blockchain data indexing infrastructure that transforms raw onchain data into structured, queryable formats accessible through multiple integration methods. The platform indexes 1+ petabyte of multi-chain data across 100+ blockchains with full historical coverage from genesis blocks.

API Access

The Dune API delivers programmatic access to blockchain data through REST endpoints, enabling developers to integrate onchain analytics directly into applications and workflows. The Sync REST API converts any Dune query into a live endpoint, supporting serverless querying without managing indexing infrastructure. The API is MCP Ready (Model Control Protocol) for integration with AI agents and automation platforms. Developers can connect to BI tools including Hex, Metabase, Looker, Tableau, and Power BI through native connectors.

The Sim API provides real-time, production-grade wallet data across 60+ chains through a unified interface. Data is available within 200ms of block propagation, delivering token balances, NFT holdings, transaction history, DeFi positions, and portfolio analytics. The API returns rich, ready-to-use data pre-enriched with onchain prices, token metadata, and formatted activity feeds.

Sim Subscriptions enable real-time event streaming via webhooks, delivering onchain events (token transfers, NFT mints, smart contract calls) within 200ms of confirmation. Developers configure subscriptions to specific events with automatic retry logic and event history access.

Data Warehouse Integration

Datashare enables organizations to query Dune's blockchain datasets directly within their own cloud data platforms (Snowflake, BigQuery, Databricks) without data movement or replication. Cross-region replication ensures low-latency access globally. Organizations consolidate Dune's onchain data with proprietary offchain data for unified analytics.

Transformation Infrastructure

The dbt Connector enables enterprise-grade data transformation workflows on Dune's blockchain datasets. Teams run dbt (data build tool) transformations directly on comprehensive blockchain data with incremental queries, Git-native version control, and automated data quality testing. The connector offers drop-in compatibility with existing dbt projects, Airflow DAGs, and Prefect workflows.

Data Coverage

All infrastructure products provide access to 60,000+ decoded smart contracts, cross-chain normalized tables, and comprehensive blockchain data organized into documented schemas. The platform continuously adds new chains and decoded contracts based on ecosystem demand.

Performance & Scale

Indexing infrastructure is optimized for production use with 99.9%+ uptime SLAs, low-latency query execution, and automatic scaling. The global edge network minimizes latency worldwide with sub-100ms response times. The platform processes millions of blockchain events per minute with automatic failover and load balancing.