v1

package main

import (
	"context"
	"fmt"
	"os"

	claude "github.com/wearyoutrage/claude-sdk-go"
)

func main() {
	apiKey := os.Getenv("API_KEY")
	c := claude.NewClient(apiKey)
	m := claude.RequestBodyMessages{
		Model:     "claude-3-7-sonnet-20250219",
		MaxTokens: 1024,
		Messages: []claude.RequestBodyMessagesMessages{
			{
				Role:    claude.MessagesRoleUser,
				Content: "Hello, world!",
			},
		},
	}
	ctx := context.Background()
	res, err := c.CreateMessages(ctx, m)
	if err != nil {
		panic(err)
	}
	fmt.Println(res.Content[0].Text)
}

Output:
Hello! How can I assist you today?

package main

import (
	"context"
	"fmt"
	"os"

	claude "github.com/wearyoutrage/claude-sdk-go"
)

func main() {
	apiKey := os.Getenv("API_KEY")
	c := claude.NewClient(apiKey)
	m := claude.RequestBodyMessages{
		Model:     "claude-3-7-sonnet-20250219",
		MaxTokens: 1024,
		SystemTypeText: []claude.RequestBodySystemTypeText{
			claude.UseSystemCacheEphemeral("Please speak in Japanese."),
		},
		Messages: []claude.RequestBodyMessagesMessages{
			{
				Role: claude.MessagesRoleUser,
				ContentTypeText: []claude.RequestBodyMessagesMessagesContentTypeText{
					{
						Text:         "Hello!",
						CacheControl: claude.UseCacheEphemeral(),
					},
				},
			},
		},
	}
	ctx := context.Background()
	res, err := c.CreateMessages(ctx, m)
	if err != nil {
		panic(err)
	}
	fmt.Println(res.Content[0].Text)
}

Output:
こんにちは！日本語でお話しましょう。

package main

import (
	"context"
	"errors"
	"fmt"
	"io"
	"os"

	claude "github.com/wearyoutrage/claude-sdk-go"
)

func main() {
	apiKey := os.Getenv("API_KEY")
	c := claude.NewClient(apiKey)
	m := claude.RequestBodyMessages{
		Model:     "claude-3-7-sonnet-20250219",
		MaxTokens: 1024,
		Messages: []claude.RequestBodyMessagesMessages{
			{
				Role:    claude.MessagesRoleUser,
				Content: "Hello, world!",
			},
		},
	}
	ctx := context.Background()
	stream, err := c.CreateMessagesStream(ctx, m)
	if err != nil {
		panic(err)
	}
	defer stream.Close()
	for {
		res, err := stream.Recv()
		if errors.Is(err, io.EOF) {
			break
		}
		if err != nil {
			panic(err)
		}
		fmt.Printf("%s", res.Content[0].Text)
	}
	fmt.Println()
}

Output:
Hello! How can I assist you today?

package main

import (
	"context"
	"fmt"
	"os"

	claude "github.com/wearyoutrage/claude-sdk-go"
)

func main() {
	apiKey := os.Getenv("API_KEY")
	c := claude.NewClient(apiKey)
	m := claude.RequestBodyMessages{
		Model:     "claude-3-7-sonnet-20250219",
		MaxTokens: 8192,
		Thinking:  claude.UseThinking(4096),
		Messages: []claude.RequestBodyMessagesMessages{
			{
				Role:    claude.MessagesRoleUser,
				Content: "Hello, world!",
			},
		},
	}
	ctx := context.Background()
	res, err := c.CreateMessages(ctx, m)
	if err != nil {
		panic(err)
	}

	for _, v := range res.Content {
		if v.Type == claude.ResponseBodyMessagesContentTypeThinking {
			fmt.Println("[thinking]", v.Thinking)
		}
		if v.Type == claude.ResponseBodyMessagesContentTypeText {
			fmt.Println("[text]", v.Text)
		}
	}
}

Output:
[thinking] This is a simple "Hello, world!" greeting from the user. It's a common first phrase in programming and also a standard greeting in conversations with AI assistants. I should respond in a friendly and welcoming manner.
[text] Hi there! It's nice to meet you. "Hello, world!" is such a classic greeting - it brings back memories of first programming lessons for many! How are you doing today? Is there something specific I can help you with?

package main

import (
	"context"
	"errors"
	"fmt"
	"io"
	"os"

	claude "github.com/wearyoutrage/claude-sdk-go"
)

func main() {
	apiKey := os.Getenv("API_KEY")
	c := claude.NewClient(apiKey)
	m := claude.RequestBodyMessages{
		Model:     "claude-3-7-sonnet-20250219",
		MaxTokens: 8192,
		Thinking:  claude.UseThinking(4096),
		Messages: []claude.RequestBodyMessagesMessages{
			{
				Role:    claude.MessagesRoleUser,
				Content: "Guess the Earth's population in 2100",
			},
		},
	}
	ctx := context.Background()
	stream, err := c.CreateMessagesStream(ctx, m)
	if err != nil {
		panic(err)
	}
	defer stream.Close()
	streamType := ""
	for {
		res, err := stream.Recv()
		if errors.Is(err, io.EOF) {
			break
		}
		if err != nil {
			panic(err)
		}
		if res.Content[0].Type == claude.ResponseBodyMessagesContentTypeThinking && streamType != claude.ResponseBodyMessagesContentTypeThinking {
			fmt.Println("[thinking]")
			streamType = claude.ResponseBodyMessagesContentTypeThinking
		}
		if res.Content[0].Type == claude.ResponseBodyMessagesContentTypeText && streamType != claude.ResponseBodyMessagesContentTypeText {
			fmt.Println()
			fmt.Println("[text]")
			streamType = claude.ResponseBodyMessagesContentTypeText
		}

		fmt.Printf("%s", res.Content[0].Thinking)
		fmt.Printf("%s", res.Content[0].Text)
	}
	fmt.Println()
	

Output:

package main

import (
	"context"
	"fmt"
	"os"

	claude "github.com/wearyoutrage/claude-sdk-go"
)

func main() {
	apiKey := os.Getenv("API_KEY")
	c := claude.NewClient(apiKey)
	m := claude.RequestBodyMessages{
		Model:     "claude-3-7-sonnet-20250219",
		MaxTokens: 1024,
		Messages: []claude.RequestBodyMessagesMessages{
			{
				Role: claude.MessagesRoleUser,
				ContentTypeImage: []claude.RequestBodyMessagesMessagesContentTypeImage{
					{
						Source: claude.RequestBodyMessagesMessagesContentTypeImageSource{
							Type:      "base64",
							MediaType: "image/png",
							Data:      "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",
						},
					},
				},
			},
		},
	}
	ctx := context.Background()
	res, err := c.CreateMessages(ctx, m)
	if err != nil {
		panic(err)
	}
	fmt.Println(res.Content[0].Text)
}

Output:
The image shows a smooth gradient transitioning from a bright, vibrant orange at the bottom to a light blue at the top. The colors blend seamlessly into each other, creating a visually striking and aesthetically pleasing effect. The simplicity of the gradient allows the colors to be the main focus, showcasing their luminosity and the way they interact with one another. This type of gradient is often used as a background or design element to add depth, warmth, and visual interest to various digital or print media projects.