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Class ZCL_LLM_CLIENT_ANTHROPIC

AI Generated documentation.

Overview

Provides client implementation for interacting with Anthropic's LLM API. Inherits from base LLM client (ZCL_LLM_CLIENT_BASE) and implements Anthropic-specific API handling.

Key Public Methods:

  1. GET_CLIENT: Factory method returning client instance
  2. CONSTRUCTOR: Initializes client with configs
  3. ZIF_LLM_CLIENT~NEW_REQUEST: Creates request with Anthropic-specific defaults (e.g., 8192 max tokens)

Main Features:

  • Handles Anthropic API authentication (x-api-key)
  • Implements message formatting per Anthropic requirements
  • Processes responses with Anthropic-specific content structures
  • Supports tool definitions and tool choice handling

Dependencies

  1. ZCL_LLM_HTTP_CLIENT_WRAPPER: HTTP communication
  2. ZCL_LLM_COMMON: Utility methods and BAdI access
  3. Encryption class via BAdI GET_ENCRYPTION_IMPL
  4. Exceptions: ZCX_LLM_VALIDATION, ZCX_LLM_AUTHORIZATION

Details

Key Implementation Flow

sequenceDiagram
    Client->>+AnthropicClient: new_request()
    AnthropicClient->>+HTTP Client: set_header('anthropic-version')
    AnthropicClient->>+HTTP Client: set_header('x-api-key')
    AnthropicClient->>Request Builder: build_request_json()
    Request Builder->>Anthropic API: messages[] + tools[] + system[]
    Anthropic API-->>Response Handler: content[] + tool_use
    Response Handler->>Client: parsed_message + tool_calls

Implementation Highlights

  1. HTTP Client Configuration
  2. Sets required anthropic-version: 2023-06-01 header

  3. Uses encrypted API key from provider config

  4. Message Processing

  5. Separates system messages into dedicated JSON array
  6. Handles tool call responses with type: tool_use

  7. Converts tool results to Anthropic's tool_result format

  8. Tool Handling 

classDiagram
    class Tool_Definition{
        +name
        +description
        +input_schema
    }
    class Tool_Choice{
        +type: auto|any|tool
        +name
    }
    AnthropicRequest --* Tool_Definition
    AnthropicRequest --* Tool_Choice
  • Requires tool definitions when tools are used

  • Supports three tool choice modes: auto, any, specific tool

  • Response Parsing

  • Processes nested content[] array with text/tool_use entries
  • Converts Anthropic's input structure to standard tool call format

  • Handles token usage statistics

  • Limitations

  • Structured output not supported (explicitly ignored)
  • Maximum tokens hardcoded to 8192
  • Requires manual system message separation