harvest-mcp-server

Instructions

Implementation Reference

• src/tools/clients.ts:38-56 (handler)

  The handler implementation for the 'get_client' tool, which validates input and calls the harvest client API.

  class GetClientHandler implements ToolHandler {
    constructor(private readonly config: BaseToolConfig) {}
  
    async execute(args: Record<string, any>): Promise<CallToolResult> {
      try {
        const inputSchema = z.object({ client_id: z.number().int().positive() });
        const { client_id } = validateInput(inputSchema, args, 'get client');
        
        logger.info('Fetching client from Harvest API', { clientId: client_id });
        const client = await this.config.harvestClient.getClient(client_id);
        
        return {
          content: [{ type: 'text', text: JSON.stringify(client, null, 2) }],
        };
      } catch (error) {
        return handleMCPToolError(error, 'get_client');
      }
    }
  }

• src/tools/clients.ts:133-147 (registration)

  The registration of the 'get_client' tool within the `registerClientTools` function.

  {
    tool: {
      name: 'get_client',
      description: 'Retrieve a specific client by its ID. Returns complete client details including contact information and billing configuration.',
      inputSchema: {
        type: 'object',
        properties: {
          client_id: { type: 'number', description: 'The ID of the client to retrieve' },
        },
        required: ['client_id'],
        additionalProperties: false,
      },
    },
    handler: new GetClientHandler(config),
  },