anthropics/anthropic-sdk-go

anthropics/anthropic-sdk-go

Description: Access to Anthropic's safety-first language model APIs via Go

Language: Go

License: MIT

Stars: 1091

Forks: 185

Open issues: 86

Created: 2024-07-30T01:13:26Z

Pushed: 2026-06-09T23:55:08Z

Default branch: main

Fork: no

Archived: no

README:

Claude SDK for Go

The Claude SDK for Go provides access to the Claude API from Go applications.

Documentation

Full documentation is available at [platform.claude.com/docs/en/api/sdks/go](https://platform.claude.com/docs/en/api/sdks/go).

Installation

import (
"github.com/anthropics/anthropic-sdk-go" // imported as anthropic
)

Or explicitly add the dependency:

go get -u 'github.com/anthropics/anthropic-sdk-go@v1.50.1'

Getting started

package main

import (
"context"
"fmt"

"github.com/anthropics/anthropic-sdk-go"
"github.com/anthropics/anthropic-sdk-go/option"
)

func main() {
client := anthropic.NewClient(
option.WithAPIKey("my-anthropic-api-key"), // defaults to os.LookupEnv("ANTHROPIC_API_KEY")
)
message, err := client.Messages.New(context.TODO(), anthropic.MessageNewParams{
MaxTokens: 1024,
Messages: []anthropic.MessageParam{
anthropic.NewUserMessage(anthropic.NewTextBlock("What is a quaternion?")),
},
Model: anthropic.ModelClaudeOpus4_6,
})
if err != nil {
panic(err.Error())
}
fmt.Printf("%+v\n", message.Content)
}

Requirements

Go 1.24+

Contributing

See [CONTRIBUTING.md](./CONTRIBUTING.md).

License

This project is licensed under the MIT License. See the [LICENSE](LICENSE) file for details.