src

Create new resource file following this pattern - define types, create class extending APIResource, implement methods

Pattern: See how Completions class defines CompletionCreateParams interface and create() method with _client.post()

For resources with multiple operations (list, get, etc), follow this pattern with pagination

Pattern: See how Models class implements retrieve() and list() with PagePromise for paginated results

Export your new resource module - add export statement

Pattern: Add line like: export * from './resources/your-resource';

Register resource on client - add property and instantiate in constructor

Pattern: See how 'messages: API.Messages' is declared and 'this.messages = new API.Messages(this)' in constructor

Create test file for new resource

Pattern: Follow test structure: mock client, test each method with expected params and response handling

Create beta resource file in beta directory

Pattern: See how Files class implements upload(), list(), delete(), download(), retrieveMetadata() methods

For complex beta resources with sub-resources, follow nested structure

Pattern: See how Messages has 'batches: Batches' property for sub-resource access

Create test file in beta test directory

Pattern: Follow existing beta test patterns with proper mocking

For schema-related helpers, add to or follow pattern in zod.ts

Pattern: See zodToJsonSchema() function that converts Zod schemas to JSON schema format

For JSON schema manipulation, add to json-schema.ts

Pattern: See how schemas are converted for Anthropic's structured output system

Export new helper from index

Pattern: Add export statement to expose helper publicly

Add tests for helper functionality

Pattern: See how structured output parsing is tested with mocked responses

Extend or follow MessageStream pattern for new streaming features

Pattern: See how MessageStream handles SSE parsing and event emission

Create example demonstrating streaming usage

Pattern: See how anthropic.beta.messages.stream() is used with async iteration

Add tool definition or runner in tools module

Pattern: See existing tool execution framework structure

Create example showing tool integration

Pattern: See how beta memory tool integrates with filesystem backend and manages context

Create example file following existing patterns

Pattern: See how count-tokens.ts demonstrates token counting with clear comments and error handling

For batch/async operations, follow this pattern

Pattern: See how batch results are fetched and processed

For API resource tests, follow this structure

Pattern: See how client is mocked, requests are tested with expected params, and responses are validated

For resources with CRUD operations, test each method

Pattern: See tests for create, retrieve, list, delete, cancel operations

For SDK package tests, follow package-specific patterns

Pattern: See how Bedrock client tests mock fetch and validate request encoding

Modify publishing logic for monorepo packages

Pattern: See how packages are published after releases

Modify build post-processing

Pattern: See how compiled output is cleaned and package exports are configured