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Flow Go SDK

Flow Go SDK is a Go client library for applications that interact with the Flow network. It provides functions for sending transactions, listening for or querying events, querying accounts and transaction results, executing scripts, and communicating with Flow Access Nodes over gRPC or HTTP. The SDK also includes cryptography and transaction helpers and supports local development with the Flow Emulator.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Flow Go SDK — 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 it when a Go application needs client-side access to Flow network operations, or when developing Flow integrations against the Flow Emulator.

Who it is for

  • Go developers building Flow backend services, indexers, bots or developer tooling.
  • Teams adding Flow network interactions to an existing Go application.

Documented uses

  • Submit Flow transactions from a Go service.
  • Query accounts, transaction results and blocks, or execute scripts.
  • Retrieve or monitor Flow events for backend applications.
  • Develop Flow-integrated code locally using the Flow Emulator.
Before you choose

Requirements & limits

The repository is public and identifies the project as open source under the Apache-2.0 license. The README specifies Go 1.26 or later; building and testing commands using the SDK require cgo enabled for its cryptography library.

  • The SDK supports gRPC and HTTP Access Node communication; its README recommends gRPC as more efficient and faster.
  • It is compatible with the Flow Emulator for local development.
  • The documented installation command is go get github.com/onflow/flow-go-sdk.
  • With cgo disabled, BLS signature features are unavailable; BLS tool calls cause a panic.
  • The README documents ECDSA key generation with P-256 and secp256k1 curves.

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

Install the Flow Go SDK

Add the Flow Go SDK dependency to a Go project.

Before you start

  • Go 1.26 or later.
  • Enable cgo for building and testing SDK commands because of the underlying cryptography library.

Steps

  1. Install Go 1.26 or later.

  2. From the Go project, run the command below.

    Documented command
    go get github.com/onflow/flow-go-sdk

  3. Build and test with CGO_ENABLED=1 enabled.

Expected outcome

The SDK is added to the Go project and configured for builds that use its cryptography library.

Guide limitations

  • Building with cgo disabled requires the no-cgo build tag and disables BLS signature features; calling a BLS tool then panics.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
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Sources checked
9 October 2026
Original website title
onflow/flow-go-sdk · Official homepage title · retained in its source language
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