Use WIF with AWS

import os

import anthropic
import boto3
from anthropic import WorkloadIdentityCredentials


def get_sts_web_identity_token() -> str:
    sts = boto3.client("sts", region_name="us-east-1")
    resp = sts.get_web_identity_token(
        Audience=["https://api.anthropic.com"],
        SigningAlgorithm="RS256",
        DurationSeconds=900,
    )
    return resp["WebIdentityToken"]


client = anthropic.Anthropic(
    credentials=WorkloadIdentityCredentials(
        identity_token_provider=get_sts_web_identity_token,
        federation_rule_id=os.environ["ANTHROPIC_FEDERATION_RULE_ID"],
        organization_id=os.environ["ANTHROPIC_ORGANIZATION_ID"],
        service_account_id=os.environ["ANTHROPIC_SERVICE_ACCOUNT_ID"],
        workspace_id=os.environ.get("ANTHROPIC_WORKSPACE_ID"),
    ),
)

message = client.messages.create(
    model="claude-sonnet-4-6",
    max_tokens=1024,
    messages=[{"role": "user", "content": "Hello from AWS"}],
)
print(message.content[0].text)

import Anthropic from "@anthropic-ai/sdk";
import { oidcFederationProvider } from "@anthropic-ai/sdk/lib/credentials/oidc-federation";
import { STSClient, GetWebIdentityTokenCommand } from "@aws-sdk/client-sts";

const sts = new STSClient({ region: "us-east-1" });

async function getStsWebIdentityToken(): Promise<string> {
  const out = await sts.send(
    new GetWebIdentityTokenCommand({
      Audience: ["https://api.anthropic.com"],
      SigningAlgorithm: "RS256",
      DurationSeconds: 900
    })
  );
  return out.WebIdentityToken!;
}

const client = new Anthropic({
  credentials: oidcFederationProvider({
    identityTokenProvider: getStsWebIdentityToken,
    federationRuleId: process.env.ANTHROPIC_FEDERATION_RULE_ID!,
    organizationId: process.env.ANTHROPIC_ORGANIZATION_ID!,
    serviceAccountId: process.env.ANTHROPIC_SERVICE_ACCOUNT_ID,
    workspaceId: process.env.ANTHROPIC_WORKSPACE_ID,
    baseURL: "https://api.anthropic.com",
    fetch
  })
});

const message = await client.messages.create({
  model: "claude-sonnet-4-6",
  max_tokens: 1024,
  messages: [{ role: "user", content: "Hello from AWS" }]
});
for (const block of message.content) {
  if (block.type === "text") {
    console.log(block.text);
  }
}

package main

import (
	"context"
	"fmt"
	"os"

	"github.com/anthropics/anthropic-sdk-go"
	"github.com/anthropics/anthropic-sdk-go/option"
	"github.com/aws/aws-sdk-go-v2/aws"
	"github.com/aws/aws-sdk-go-v2/config"
	"github.com/aws/aws-sdk-go-v2/service/sts"
)

func main() {
	ctx := context.TODO()
	cfg, err := config.LoadDefaultConfig(ctx, config.WithRegion("us-east-1"))
	if err != nil {
		panic(err)
	}
	stsClient := sts.NewFromConfig(cfg)

	getStsToken := option.IdentityTokenFunc(func(ctx context.Context) (string, error) {
		out, err := stsClient.GetWebIdentityToken(ctx, &sts.GetWebIdentityTokenInput{
			Audience:         []string{"https://api.anthropic.com"},
			SigningAlgorithm: "RS256",
			DurationSeconds:  aws.Int32(900),
		})
		if err != nil {
			return "", err
		}
		return *out.WebIdentityToken, nil
	})

	client := anthropic.NewClient(
		option.WithFederationTokenProvider(getStsToken, option.FederationOptions{
			FederationRuleID: os.Getenv("ANTHROPIC_FEDERATION_RULE_ID"),
			OrganizationID:   os.Getenv("ANTHROPIC_ORGANIZATION_ID"),
			ServiceAccountID: os.Getenv("ANTHROPIC_SERVICE_ACCOUNT_ID"),
			WorkspaceID:      os.Getenv("ANTHROPIC_WORKSPACE_ID"),
		}),
	)

	message, err := client.Messages.New(ctx, anthropic.MessageNewParams{
		Model:     anthropic.ModelClaudeSonnet4_6,
		MaxTokens: 1024,
		Messages: []anthropic.MessageParam{
			anthropic.NewUserMessage(anthropic.NewTextBlock("Hello from AWS")),
		},
	})
	if err != nil {
		panic(err)
	}
	fmt.Println(message.Content[0].Text)
}

import com.anthropic.client.AnthropicClient;
import com.anthropic.client.okhttp.AnthropicOkHttpClient;
import com.anthropic.credentials.IdentityTokenProvider;
import com.anthropic.models.messages.MessageCreateParams;
import com.anthropic.models.messages.Model;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.sts.StsClient;
import software.amazon.awssdk.services.sts.model.GetWebIdentityTokenRequest;

void main() {
    StsClient sts = StsClient.builder().region(Region.US_EAST_1).build();

    IdentityTokenProvider getStsToken = () -> sts.getWebIdentityToken(
                    GetWebIdentityTokenRequest.builder()
                            .audience("https://api.anthropic.com")
                            .signingAlgorithm("RS256")
                            .durationSeconds(900)
                            .build())
            .webIdentityToken();

    AnthropicClient client = AnthropicOkHttpClient.builder()
            .federationTokenProvider(
                    getStsToken,
                    System.getenv("ANTHROPIC_FEDERATION_RULE_ID"),
                    System.getenv("ANTHROPIC_ORGANIZATION_ID"),
                    System.getenv("ANTHROPIC_SERVICE_ACCOUNT_ID"))
            .build();

    var message = client.messages().create(MessageCreateParams.builder()
            .model(Model.CLAUDE_SONNET_4_6)
            .maxTokens(1024)
            .addUserMessage("Hello from AWS")
            .build());

    IO.println(message.content());
}

using Amazon.SecurityToken;
using Amazon.SecurityToken.Model;
using Anthropic.Models.Messages;
using Anthropic.Oidc;

var credentials = new WorkloadIdentityCredentials(new WorkloadIdentityOptions
{
    FederationRuleId = Environment.GetEnvironmentVariable("ANTHROPIC_FEDERATION_RULE_ID")!,
    OrganizationId = Environment.GetEnvironmentVariable("ANTHROPIC_ORGANIZATION_ID"),
    ServiceAccountId = Environment.GetEnvironmentVariable("ANTHROPIC_SERVICE_ACCOUNT_ID"),
    WorkspaceId = Environment.GetEnvironmentVariable("ANTHROPIC_WORKSPACE_ID"),
    IdentityTokenProvider = new StsTokenProvider(),
});
using var client = new AnthropicOidcClient(credentials);

var message = await client.Messages.Create(new()
{
    Model = Model.ClaudeSonnet4_6,
    MaxTokens = 1024,
    Messages = [new() { Role = Role.User, Content = "Hello from AWS" }],
});
foreach (var block in message.Content)
{
    if (block.Value is TextBlock textBlock)
    {
        Console.WriteLine(textBlock.Text);
    }
}

class StsTokenProvider : IIdentityTokenProvider
{
    private readonly AmazonSecurityTokenServiceClient _sts = new(Amazon.RegionEndpoint.USEast1);

    public async Task<string> GetIdentityTokenAsync(CancellationToken ct = default)
    {
        var resp = await _sts.GetWebIdentityTokenAsync(new GetWebIdentityTokenRequest
        {
            Audience = ["https://api.anthropic.com"],
            SigningAlgorithm = "RS256",
            DurationSeconds = 900,
        }, ct);
        return resp.WebIdentityToken;
    }
}

TOKEN_FILE=$(mktemp)
aws sts get-web-identity-token \
  --region us-east-1 \
  --audience "https://api.anthropic.com" \
  --signing-algorithm RS256 \
  --duration-seconds 900 \
  --query WebIdentityToken --output text > "$TOKEN_FILE"

export ANTHROPIC_IDENTITY_TOKEN_FILE="$TOKEN_FILE"
# ANTHROPIC_FEDERATION_RULE_ID, ANTHROPIC_ORGANIZATION_ID, and
# ANTHROPIC_SERVICE_ACCOUNT_ID, and ANTHROPIC_WORKSPACE_ID are read from the environment
ant messages create \
  --model claude-sonnet-4-6 \
  --max-tokens 1024 \
  --message '{role: user, content: "Hello from AWS"}'

<?php
require 'vendor/autoload.php';

use Anthropic\Client;
use Anthropic\Credentials\WorkloadIdentityCredentials;
use Aws\Sts\StsClient;

$sts = new StsClient(['region' => 'us-east-1', 'version' => 'latest']);
$client = new Client(credentials: new WorkloadIdentityCredentials(
    identityTokenProvider: fn() => $sts->getWebIdentityToken([
        'Audience' => ['https://api.anthropic.com'],
        'SigningAlgorithm' => 'RS256',
        'DurationSeconds' => 900,
    ])['WebIdentityToken'],
    federationRuleId: getenv('ANTHROPIC_FEDERATION_RULE_ID'),
    organizationId: getenv('ANTHROPIC_ORGANIZATION_ID'),
    serviceAccountId: getenv('ANTHROPIC_SERVICE_ACCOUNT_ID'),
    workspaceId: getenv('ANTHROPIC_WORKSPACE_ID') ?: null,
));

$message = $client->messages->create(
    model: 'claude-sonnet-4-6',
    maxTokens: 1024,
    messages: [['role' => 'user', 'content' => 'Hello from AWS']],
);
echo $message->content[0]->text, PHP_EOL;

require "anthropic"
require "aws-sdk-sts"

sts = Aws::STS::Client.new(region: "us-east-1")
client = Anthropic::Client.new(
  credentials: Anthropic::WorkloadIdentityCredentials.new(
    identity_token_provider: -> {
      sts.get_web_identity_token(
        audience: ["https://api.anthropic.com"],
        signing_algorithm: "RS256",
        duration_seconds: 900,
      ).web_identity_token
    },
    federation_rule_id: ENV.fetch("ANTHROPIC_FEDERATION_RULE_ID"),
    organization_id: ENV.fetch("ANTHROPIC_ORGANIZATION_ID"),
    service_account_id: ENV.fetch("ANTHROPIC_SERVICE_ACCOUNT_ID"),
    workspace_id: ENV["ANTHROPIC_WORKSPACE_ID"],
  ),
)

message = client.messages.create(
  model: "claude-sonnet-4-6",
  max_tokens: 1024,
  messages: [{role: "user", content: "Hello from AWS"}]
)
puts message.content.first.text

import os

import anthropic
from anthropic import IdentityTokenFile, WorkloadIdentityCredentials

client = anthropic.Anthropic(
    credentials=WorkloadIdentityCredentials(
        identity_token_provider=IdentityTokenFile(
            os.environ["ANTHROPIC_IDENTITY_TOKEN_FILE"]
        ),
        federation_rule_id=os.environ["ANTHROPIC_FEDERATION_RULE_ID"],
        organization_id=os.environ["ANTHROPIC_ORGANIZATION_ID"],
        service_account_id=os.environ["ANTHROPIC_SERVICE_ACCOUNT_ID"],
        workspace_id=os.environ.get("ANTHROPIC_WORKSPACE_ID"),
    ),
)

message = client.messages.create(
    model="claude-sonnet-4-6",
    max_tokens=1024,
    messages=[{"role": "user", "content": "Hello from EKS"}],
)
print(message.content[0].text)

import Anthropic from "@anthropic-ai/sdk";
import { oidcFederationProvider } from "@anthropic-ai/sdk/lib/credentials/oidc-federation";
import { identityTokenFromFile } from "@anthropic-ai/sdk/lib/credentials/identity-token";

const client = new Anthropic({
  credentials: oidcFederationProvider({
    identityTokenProvider: identityTokenFromFile(process.env.ANTHROPIC_IDENTITY_TOKEN_FILE!),
    federationRuleId: process.env.ANTHROPIC_FEDERATION_RULE_ID!,
    organizationId: process.env.ANTHROPIC_ORGANIZATION_ID!,
    serviceAccountId: process.env.ANTHROPIC_SERVICE_ACCOUNT_ID,
    workspaceId: process.env.ANTHROPIC_WORKSPACE_ID,
    baseURL: "https://api.anthropic.com",
    fetch
  })
});

const message = await client.messages.create({
  model: "claude-sonnet-4-6",
  max_tokens: 1024,
  messages: [{ role: "user", content: "Hello from EKS" }]
});
for (const block of message.content) {
  if (block.type === "text") {
    console.log(block.text);
  }
}

package main

import (
	"context"
	"fmt"
	"os"

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

func main() {
	tokenPath := os.Getenv("ANTHROPIC_IDENTITY_TOKEN_FILE")

	readToken := option.IdentityTokenFunc(func(ctx context.Context) (string, error) {
		raw, err := os.ReadFile(tokenPath)
		if err != nil {
			return "", fmt.Errorf("read identity token: %w", err)
		}
		return string(raw), nil
	})

	client := anthropic.NewClient(
		option.WithFederationTokenProvider(readToken, option.FederationOptions{
			FederationRuleID: os.Getenv("ANTHROPIC_FEDERATION_RULE_ID"),
			OrganizationID:   os.Getenv("ANTHROPIC_ORGANIZATION_ID"),
			ServiceAccountID: os.Getenv("ANTHROPIC_SERVICE_ACCOUNT_ID"),
			WorkspaceID:      os.Getenv("ANTHROPIC_WORKSPACE_ID"),
		}),
	)

	message, err := client.Messages.New(context.TODO(), anthropic.MessageNewParams{
		Model:     anthropic.ModelClaudeSonnet4_6,
		MaxTokens: 1024,
		Messages: []anthropic.MessageParam{
			anthropic.NewUserMessage(anthropic.NewTextBlock("Hello from EKS")),
		},
	})
	if err != nil {
		panic(err)
	}
	fmt.Println(message.Content[0].Text)
}

import com.anthropic.client.AnthropicClient;
import com.anthropic.client.okhttp.AnthropicOkHttpClient;
import com.anthropic.models.messages.MessageCreateParams;
import com.anthropic.models.messages.Model;

void main() {
    AnthropicClient client = AnthropicOkHttpClient.fromEnv();

    var message = client.messages().create(MessageCreateParams.builder()
            .model(Model.CLAUDE_SONNET_4_6)
            .maxTokens(1024)
            .addUserMessage("Hello from EKS")
            .build());

    IO.println(message.content());
}

using Anthropic.Models.Messages;
using Anthropic.Oidc;

var result = AnthropicCredentials.Resolve()
    ?? throw new InvalidOperationException("No federation credentials found in environment");
using var client = new AnthropicOidcClient(result);

var message = await client.Messages.Create(new()
{
    Model = Model.ClaudeSonnet4_6,
    MaxTokens = 1024,
    Messages = [new() { Role = Role.User, Content = "Hello from EKS" }],
});
foreach (var block in message.Content)
{
    if (block.Value is TextBlock textBlock)
    {
        Console.WriteLine(textBlock.Text);
    }
}

# Reads ANTHROPIC_FEDERATION_RULE_ID, ANTHROPIC_ORGANIZATION_ID,
# ANTHROPIC_SERVICE_ACCOUNT_ID, ANTHROPIC_WORKSPACE_ID, and ANTHROPIC_IDENTITY_TOKEN_FILE
ant messages create \
  --model claude-sonnet-4-6 \
  --max-tokens 1024 \
  --message '{role: user, content: "Hello from EKS"}'

<?php
require 'vendor/autoload.php';

use Anthropic\Client;

// Reads ANTHROPIC_FEDERATION_RULE_ID, ANTHROPIC_ORGANIZATION_ID,
// ANTHROPIC_SERVICE_ACCOUNT_ID, ANTHROPIC_WORKSPACE_ID, and ANTHROPIC_IDENTITY_TOKEN_FILE
$client = new Client();

$message = $client->messages->create(
    model: 'claude-sonnet-4-6',
    maxTokens: 1024,
    messages: [['role' => 'user', 'content' => 'Hello from EKS']],
);
echo $message->content[0]->text, PHP_EOL;

require "anthropic"

# Reads ANTHROPIC_FEDERATION_RULE_ID, ANTHROPIC_ORGANIZATION_ID,
# ANTHROPIC_SERVICE_ACCOUNT_ID, ANTHROPIC_WORKSPACE_ID, and ANTHROPIC_IDENTITY_TOKEN_FILE
client = Anthropic::Client.new

message = client.messages.create(
  model: "claude-sonnet-4-6",
  max_tokens: 1024,
  messages: [{role: "user", content: "Hello from EKS"}]
)
puts message.content.first.text