Anthropic SDK Token Usage Logger

Instruments Anthropic API calls to log token usage, latency, and cost per request using the Anthropic TypeScript SDK. Wraps the anthropic.messages.create method to capture usage.input_tokens, usage.output_tokens, and timing from the API response. Writes structured logs to CloudWatch Logs via the AWS SDK v3 CloudWatchLogsClient.

Installation

Use the upstream install or setup path that matches your environment:

• npm install @anthropic-ai/sdk

Requirements and caveats from upstream:

• Node.js 18+

Basic usage or getting-started notes:

• sh

• js

• import Anthropic from '@anthropic-ai/sdk';

• Source: https://github.com/anthropics/anthropic-sdk-typescript

• Extracted from upstream docs: https://raw.githubusercontent.com/anthropics/anthropic-sdk-typescript/HEAD/README.md

Documentation

• https://platform.claude.com/docs/en/api/sdks/typescript

Source

• Agent Skill Exchange