@cyanheads/filesystem-mcp-server/dist/mcp-server/tools/writeFile/registration.js

A Model Context Protocol (MCP) server for platform-agnostic file capabilities, including advanced search and replace, and directory tree traversal

import { BaseErrorCode } from '../../../types-global/errors.js';
import { ErrorHandler } from '../../../utils/internal/errorHandler.js';
import { logger } from '../../../utils/internal/logger.js';
import { requestContextService } from '../../../utils/internal/requestContext.js';
import { WriteFileInputSchema, writeFileLogic, } from './writeFileLogic.js';
/**
 * Registers the 'write_file' tool with the MCP server.
 *
 * @param {McpServer} server - The McpServer instance to register the tool with.
 * @returns {Promise<void>} A promise that resolves when the tool is registered.
 * @throws {McpError} Throws an error if registration fails.
 */
export const registerWriteFileTool = async (server) => {
    const registrationContext = requestContextService.createRequestContext({ operation: 'RegisterWriteFileTool' });
    logger.info("Attempting to register 'write_file' tool", registrationContext);
    await ErrorHandler.tryCatch(async () => {
        server.tool('write_file', // Tool name
        'Writes content to a specified file. Creates the file (and necessary directories) if it doesn\'t exist, or overwrites it if it does. Accepts relative or absolute paths (resolved like readFile).', // Description
        WriteFileInputSchema.shape, // Pass the schema shape
        async (params, extra) => {
            const typedParams = params;
            const callContext = requestContextService.createRequestContext({ operation: 'WriteFileToolExecution', parentId: registrationContext.requestId });
            logger.info(`Executing 'write_file' tool for path: ${typedParams.path}`, callContext);
            // ErrorHandler will catch McpErrors thrown by the logic
            const result = await ErrorHandler.tryCatch(() => writeFileLogic(typedParams, callContext), {
                operation: 'writeFileLogic',
                context: callContext,
                input: { path: typedParams.path, content: '[CONTENT REDACTED]' }, // Redact content for logging
                errorCode: BaseErrorCode.INTERNAL_ERROR
            });
            logger.info(`Successfully executed 'write_file' for path: ${result.writtenPath}`, callContext);
            // Format the successful response
            return {
                content: [{ type: 'text', text: result.message }],
            };
        });
        logger.info("'write_file' tool registered successfully", registrationContext);
    }, {
        operation: 'registerWriteFileTool',
        context: registrationContext,
        errorCode: BaseErrorCode.CONFIGURATION_ERROR,
        critical: true
    });
};