# The Graph Substreams

**Canonical:** https://apis.io/apis/the-graph/substreams/  
**Provider:** The Graph — https://apis.io/providers/the-graph/  
**Base URL:** grpc://mainnet.eth.streamingfast.io:443  
**Documentation:** https://thegraph.com/docs/en/substreams/introduction/

The Graph Substreams is one of 6 APIs that [The Graph](https://apis.io/providers/the-graph/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include gRPC and Streaming. The published artifact set on APIs.io includes API documentation.

gRPC streaming protocol for parallelized blockchain dataflows backed by Firehose. Substreams power high-throughput indexing pipelines.

## Machine-readable artifacts (1)

- **Documentation** — https://thegraph.com/docs/en/substreams/introduction/

## Other The Graph APIs (5)

- [The Graph Subgraphs (GraphQL)](https://apis.io/apis/the-graph/subgraphs/)
- [The Graph Token API](https://apis.io/apis/the-graph/token-api/)
- [Graph Node Admin JSON-RPC (self-hosted)](https://apis.io/apis/the-graph/graph-node-rpc/)
- [Firehose](https://apis.io/apis/the-graph/firehose/)
- [The Graph Subgraphs API](https://apis.io/apis/the-graph/the-graph-subgraphs-api/)

## Tags

gRPC, Streaming

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/the-graph/substreams/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/the-graph/.