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What is resty?

go-resty/resty — explained in plain English

Analysis updated 2026-06-24

★ 11,669GoAudience · developerComplexity · 2/5LicenseSetup · easy

In one sentence

Resty is a Go library that makes calling REST APIs and sending HTTP requests much simpler, with built-in automatic retries, circuit breakers, and support for real-time server push (Server-Sent Events).

Mindmap

mindmap
  root((Resty))
    What it does
      HTTP client
      REST API calls
      Automatic retries
    Advanced features
      Exponential backoff
      Circuit breaker
      Server-Sent Events
    Auth support
      Digest auth
      API key headers
      Custom middleware
    Audience
      Go developers
      API integrators
      Backend engineers
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filefunction / class

What do people build with it?

USE CASE 1

Call a REST API from a Go program with automatic retries and exponential backoff when the server returns errors.

USE CASE 2

Add circuit-breaker logic to stop repeatedly hitting a failing third-party service and recover gracefully when it comes back.

USE CASE 3

Receive real-time server push updates via Server-Sent Events from a streaming API endpoint in a Go program.

What is it built with?

Go

How does it compare?

go-resty/restycrossplane/crossplaneopen-policy-agent/opa
Stars11,66911,66611,715
LanguageGoGoGo
Setup difficultyeasyhardmoderate
Complexity2/54/53/5
Audiencedeveloperops devopsops devops

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · easy Time to first run · 5min

Requires Go 1.23 or newer for Resty v3.

Use freely for any purpose, including commercial use, as long as you keep the copyright notice (MIT).

So what is it?

Resty is a Go library that makes it easier to send HTTP requests and work with REST APIs from Go programs. HTTP requests are how programs communicate over the web, for example fetching data from an API or sending form data to a server. Go's standard library includes built-in tools for HTTP, but Resty wraps those with a more convenient interface that requires less repetitive code. According to its topics and description, Resty also supports Server-Sent Events (a way for a server to push real-time updates to a client), digest authentication (a specific authentication scheme used by some APIs), circuit-breaker patterns (a way to stop repeatedly calling a service that is failing), and exponential backoff (automatically waiting longer between retries when requests fail). The library can also generate curl commands, which are a common way developers inspect and debug HTTP calls. Resty is on its third major version (v3), which requires Go version 1.23 or newer. The library follows semantic versioning, meaning the version number communicates whether updates contain breaking changes. It is listed in the Awesome Go collection, a curated list of notable Go packages. The README for this project is brief. It points readers to a separate documentation website (resty.dev) and to the Go package documentation site for detailed usage information. The project is open source under the MIT license and is maintained by a single creator with contributions from the community.

Copy-paste prompts

Prompt 1
Show me how to use go-resty/resty v3 to make a GET request to a JSON REST API, parse the response into a Go struct, and handle errors properly.
Prompt 2
Write a Resty client in Go that retries failed POST requests up to 3 times with exponential backoff and logs each retry attempt.
Prompt 3
How do I configure Resty to use digest authentication when calling an API that requires it?
Prompt 4
Show me a Resty v3 example that reads Server-Sent Events from a streaming endpoint and prints each event to the console as it arrives.

Frequently asked questions

What is resty?

Resty is a Go library that makes calling REST APIs and sending HTTP requests much simpler, with built-in automatic retries, circuit breakers, and support for real-time server push (Server-Sent Events).

What language is resty written in?

Mainly Go. The stack also includes Go.

What license does resty use?

Use freely for any purpose, including commercial use, as long as you keep the copyright notice (MIT).

How hard is resty to set up?

Setup difficulty is rated easy, with roughly 5min to a first successful run.

Who is resty for?

Mainly developer.

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