Function getChatClient

server/src/mcp/chat-tool.ts:84–132

()

let chatClient: AddieClaudeClient | null = null;

function getChatClient(): AddieClaudeClient {
  if (!chatClient) {
    const apiKey = process.env.ADDIE_ANTHROPIC_API_KEY || process.env.ANTHROPIC_API_KEY;
    if (!apiKey) {
      throw new Error('Anthropic API key not configured');
    }

    chatClient = new AddieClaudeClient(apiKey, AddieModelConfig.chat);

    // Register knowledge + directory tools for MCP callers.
    // MCP chat_with_addie keeps knowledge tools because MCP partners use Sonnet,
    // unlike web chat anonymous users who get Haiku (see addie-chat.ts).
    //
    // MCP chat_with_addie is invoked without a per-call auth context, so all
    // callers here are treated as anonymous — handlers are scoped to exclude
    // user-bookmarked URLs and strip Addie-generated notes that could carry
    // prompt-injection text from arbitrary fetched content.
    const knowledgeHandlers = createKnowledgeToolHandlers(undefined, { anonymous: true });
    for (const tool of KNOWLEDGE_TOOLS) {
      if (ANONYMOUS_SAFE_KNOWLEDGE_TOOLS.has(tool.name)) {
        const handler = knowledgeHandlers.get(tool.name);
        if (handler) {
          chatClient.registerTool(tool, handler);
        }
      }
    }

    // Register directory tools (public member/agent/publisher lookup - safe for anonymous)
    const directoryHandlers = createDirectoryToolHandlers();
    for (const tool of DIRECTORY_TOOLS) {
      const handler = directoryHandlers.get(tool.name);
      if (handler) {
        chatClient.registerTool(tool, handler);
      }
    }

    // Register search_members for rich card-based member search (null-safe for anonymous)
    const anonMemberHandlers = createMemberToolHandlers(null);
    const searchMembersTool = MEMBER_TOOLS.find(t => t.name === 'search_members');
    const searchMembersHandler = anonMemberHandlers.get('search_members');
    if (searchMembersTool && searchMembersHandler) {
      chatClient.registerTool(searchMembersTool, searchMembersHandler);
    }

    logger.info({ tools: chatClient.getRegisteredTools() }, 'MCP Chat: Client initialized');
  }

  return chatClient;
}

/**
 * The chat_with_addie tool definition