Pick the endpoint for the chain your package reads. Each GraphOps Substreams endpoint serves one network, and its hostname starts with that network's decimal EVM chain ID.
Endpoint preview
The CLI uses SUBSTREAMS_API_KEY.
Replace placeholders with your identifier and API key before making requests.
Supported endpoints
| Network | Network ID (CAIP-2) | gRPC endpoint |
|---|---|---|
| Ethereum Mainnet | eip155:1 | https://1.evm.substreams.graphops.xyz |
| Base | eip155:8453 | https://8453.evm.substreams.graphops.xyz |
| Arbitrum One | eip155:42161 | https://42161.evm.substreams.graphops.xyz |
This catalog lists the currently published mainnet and testnet endpoints. Copy the generated endpoint for your network. The CAIP-2 ID identifies the network in the catalog; the hostname uses the decimal chain ID:
https://<CHAIN_ID>.evm.substreams.graphops.xyzCheck package compatibility
A network in the catalog does not make every package work on it. Before you run a package against a network:
- Confirm the package was built for that chain's block model. Its package page lists the network it declares.
- Check module assumptions such as contract addresses and start blocks, which differ by network.
Backfills and live streaming are available on every supported network, with standard Substreams cursor and reorg behavior.