Subgraphs, Substreams & Blockchain Data Indexing

The Graph's Blockchain Data Indexing Products

The Graph provides a comprehensive suite of blockchain data indexing infrastructure — enabling developers, enterprises, and AI teams to transform raw on-chain data into structured, queryable formats with zero infrastructure management overhead.

Subgraphs

Subgraphs are The Graph's flagship indexing product — open APIs that allow developers to index smart contract event data and query it using GraphQL. A subgraph defines which blockchain data to index via a manifest, a GraphQL schema, and AssemblyScript mappings that translate on-chain events into queryable entities. Once published to The Graph Network, subgraphs are served by a decentralized network of 100+ independent Indexers ensuring 99.99%+ uptime.

Over 75,000 projects have deployed subgraphs across 90+ supported blockchains. Leading protocols including Uniswap, Aave, Lido, MakerDAO, Snapshot, and Gitcoin rely on subgraphs in production. A free tier of 100,000 queries per month is available, with 60–98% cost savings versus self-hosted indexing infrastructure.

Substreams

Substreams is a high-performance blockchain data streaming technology for applications requiring real-time, parallelized data pipelines. Built in modular Rust components, Substreams achieve up to 4,350x faster historical backfills compared to traditional RPC endpoints — ideal for high-frequency trading, MEV detection, real-time analytics, and on-chain monitoring pipelines.

Amp — Enterprise Blockchain Database

Amp transforms smart contract activity into structured, verifiable, compliance-ready datasets. Supporting SQL, REST, and GraphQL interfaces, Amp delivers 5.9x faster performance than BigQuery public datasets with sub-second data freshness — purpose-built for financial institutions and AI automation pipelines.

Token API

Instant, standardized REST access to token balance, price, and transfer data across major EVM-compatible chains — backed by over 200 billion rows of ClickHouse data — with no subgraph deployment required. Supports wallet balance lookups, historical OHLC prices, transfer tracking, and MCP support for AI agent integration.

AI Suite

The Graph's AI Suite connects its indexing products to AI development workflows via Model Context Protocol (MCP) servers, allowing Claude, Cursor, and other AI assistants to query live blockchain data using natural language.