technicalIndicators_adosc
Calculate the Chaikin A/D Oscillator to analyze stock momentum and volume flow using specified time intervals and period settings for trading decisions.
Instructions
Chaikin A/D Oscillator
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| symbol | Yes | The stock symbol (e.g., "IBM"). | |
| interval | Yes | Time interval (e.g., "daily", "60min", "weekly"). Check Alpha Vantage docs for valid intervals per indicator. | |
| datatype | No | Data format for the response. | json |
| month | No | Specific month for intraday intervals (YYYY-MM format). | |
| fastperiod | No | Fast period setting (integer). | |
| slowperiod | No | Slow period setting (integer). |
Implementation Reference
- src/index.ts:1102-1116 (handler)The handler function for the 'technicalIndicators_adosc' tool, registered via server.addTool. It invokes the shared executeAvantageTool helper, which calls the Alpha Vantage library's technicalIndicators.adosc method.server.addTool({ name: "technicalIndicators_adosc", description: "Chaikin A/D Oscillator", parameters: schemas.TechnicalIndicatorsFastSlowIndicatorParamsSchema, execute: ( args, context // Let type be inferred ) => executeAvantageTool( "technicalIndicators_adosc", args, context, (av, params) => av.technicalIndicators.adosc(params) ), });
- src/schemas.ts:218-221 (schema)Zod schema defining input parameters for fast/slow period technical indicators like ADOSC, extending the common params.export const TechnicalIndicatorsFastSlowIndicatorParamsSchema = TechnicalIndicatorsCommonIndicatorParamsSchema.extend({ fastperiod: z.string().optional().describe('Fast period setting (integer).'), slowperiod: z.string().optional().describe('Slow period setting (integer).'), }).describe('Parameters for indicators with fast/slow period settings.')
- src/schemas.ts:204-209 (schema)Base Zod schema for common technical indicator parameters (symbol, interval, etc.), extended by the fast/slow schema.export const TechnicalIndicatorsCommonIndicatorParamsSchema = z.object({ symbol: z.string().describe('The stock symbol (e.g., "IBM").'), interval: z.string().describe('Time interval (e.g., "daily", "60min", "weekly"). Check Alpha Vantage docs for valid intervals per indicator.'), datatype: DatatypeSchema.default('json').optional(), month: z.string().optional().describe('Specific month for intraday intervals (YYYY-MM format).'), }).describe('Common parameters for many technical indicators.')
- src/index.ts:38-115 (helper)Shared utility function that manages authentication, AVantage client lifecycle via ResourceManager, executes the library method, and formats the response for all Alpha Vantage-based MCP tools.async function executeAvantageTool<TArgs, TResult>( toolName: string, args: TArgs, context: Context<Record<string, unknown> | undefined>, // Use the imported Context type directly avantageMethod: ( av: AVantage, args: TArgs ) => Promise<{ error?: boolean; reason?: string; data?: TResult }> ): Promise<string> { logger.info(`Executing '${toolName}' tool for request ID: ${context}`); logger.debug(`Args for ${toolName}: ${JSON.stringify(args)}`); // --- Authentication & Resource Management --- // Access extraArgs safely - it might be null or undefined const extraArgsApiKey = context.extraArgs?.apiKey as string | undefined; const apiKey = extraArgsApiKey || config.apiKey; if (!apiKey) { logger.error(`'${toolName}' failed: Alpha Vantage API key missing.`); throw new UserError(apiKeyErrorMessage); } logger.debug( `Using AV API key (source: ${extraArgsApiKey ? "extraArgs" : "environment"}) for ${toolName}` ); try { // Get or create AVantage instance managed by ResourceManager const av = await resourceManager.getResource<AVantage>( apiKey, // Cache key is the resolved API key "avantage_client", // Type identifier for logging async (key) => { // Factory Function logger.info( `Creating new AVantage instance for key ending ...${key.slice(-4)}` ); // AVantage library reads AV_PREMIUM from process.env internally return new AVantage(key); }, async (avInstance) => { // Cleanup Function (no-op needed for AVantage) logger.debug(`Destroying AVantage instance (no-op)`); } ); // --- Library Call --- const result = await avantageMethod(av, args); // --- Response Handling --- if (result.error) { logger.warn( `'${toolName}' failed. Reason from avantage: ${result.reason}` ); throw new UserError(result.reason || `Tool '${toolName}' failed.`); } if (result.data === undefined || result.data === null) { logger.warn(`'${toolName}' completed successfully but returned no data.`); return "null"; // Return string "null" for empty data } logger.info(`'${toolName}' completed successfully.`); // Stringify the data part of the response return JSON.stringify(result.data); } catch (error: any) { logger.error( `Error during execution of '${toolName}': ${error.message}`, error ); // If it's already a UserError, rethrow it if (error instanceof UserError) { throw error; } // Otherwise, wrap it in a UserError throw new UserError( `An unexpected error occurred while executing tool '${toolName}': ${error.message}` ); } }
- src/index.ts:1102-1116 (registration)Explicit registration of the 'technicalIndicators_adosc' tool on the MCP server with name, description, parameters schema, and execute handler.server.addTool({ name: "technicalIndicators_adosc", description: "Chaikin A/D Oscillator", parameters: schemas.TechnicalIndicatorsFastSlowIndicatorParamsSchema, execute: ( args, context // Let type be inferred ) => executeAvantageTool( "technicalIndicators_adosc", args, context, (av, params) => av.technicalIndicators.adosc(params) ), });