Sei

Firehose chain-specific configuration for Sei

This page covers Reader Node configuration specific to Sei. For general Firehose architecture and deployment, see the Single Machine Deployment or Distributed Deployment guides.

This guide does not cover how to run a Sei node. For node setup, hardware requirements, and network configuration, refer to the official Sei documentation.

Docker Image

ghcr.io/streamingfast/sei-chain:<version>-fh3.0

View available versions on GitHub Packages

The image contains both the Firehose-patched Sei binary and fireeth.

Binary & Releases

Component	Repository	Binary
Firehose	firehose-ethereum	fireeth
Sei (Firehose-patched)	streamingfast/sei-chain	seid

Download releases from the GitHub releases pages.

Networks

Network	Chain Name
Sei Mainnet (Pacific-1)	sei-mainnet
Sei Testnet (Atlantic-2)	sei-testnet

Architecture

Sei is a Cosmos SDK-based blockchain with an integrated EVM layer. Firehose extracts EVM execution traces from the Sei node.

Reader Node Configuration

Sei Mainnet

fireeth start reader-node <apps> \
  --advertise-chain-name="sei-mainnet" \
  --reader-node-path="seid" \
  --reader-node-arguments="start --home={node-data-dir} --trace --chain-id=pacific-1" \
  <other_flags...>

Sei Testnet

fireeth start reader-node <apps> \
  --advertise-chain-name="sei-testnet" \
  --reader-node-path="seid" \
  --reader-node-arguments="start --home={node-data-dir} --trace --chain-id=atlantic-2" \
  <other_flags...>

Key Sei Flags

Flag	Description
start	Sei subcommand to start the node
--trace	Required. Enables Firehose Protocol output
--chain-id	Chain ID (pacific-1 for mainnet, atlantic-2 for testnet)
--home	Node data directory (use {node-data-dir} template)

Resources

• Sei Documentation

• streamingfast/sei-chain