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Ethrpc

Ethrpc is a Go library that connects applications to an Ethereum JSON-RPC endpoint and provides methods for querying node and chain data, estimating gas, submitting transactions, and retrieving logs through filters.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Ethrpc — OpenViST project profile in Developer Tools.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use Ethrpc when a Go application needs to call Ethereum JSON-RPC methods through an endpoint, especially for chain queries, transaction workflows or log filtering.

Who it is for

  • Go developers building applications that need Ethereum JSON-RPC access.
  • Teams implementing blockchain data queries, transaction submission or event-log monitoring in Go.

Documented uses

  • Read account balances, blocks, transactions and transaction receipts.
  • Check node and network information such as client version, peer count and sync status.
  • Estimate gas, call contracts, and submit transactions through the connected endpoint.
  • Create filters and retrieve filter changes or Ethereum logs.
Before you choose

Requirements & limits

The public GitHub repository specifies an MIT license.

  • The application must provide an Ethereum JSON-RPC endpoint; the README example uses a local endpoint.
  • The method list marks some RPC calls as unavailable and compiler-related calls as deprecated, so check required method coverage.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Connect a Go program to an Ethereum JSON-RPC endpoint

Create an Ethrpc client and request the endpoint's Web3 client version.

Before you start

  • A Go application that imports github.com/onrik/ethrpc
  • An Ethereum JSON-RPC endpoint address

Steps

  1. Create a client with ethrpc.New and the endpoint address.

  2. Call client.Web3ClientVersion().

  3. Handle the returned error and use the version value.

Expected outcome

The program can request and log the connected node's client version, as shown in the README.

Guide limitations

  • The example does not set up or provide an Ethereum node.
  • The documented example uses a local endpoint at http://127.0.0.1:8545.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
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Sources checked
14 October 2026
Original website title
onrik/ethrpc · Official homepage title · retained in its source language
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