get_feature_details
Retrieve detailed documentation and setup information for Better Auth authentication features like two-factor, GitHub integration, or database adapters.
Instructions
Get detailed information about a specific Better Auth plugin or feature
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| featureName | Yes | Name of the Better Auth feature (e.g., "two-factor", "github", "drizzle") |
Implementation Reference
- src/index.ts:331-350 (handler)The main handler function for the get_feature_details tool. It validates the feature name, checks cache, fetches detailed information if needed, caches the result, and returns a standardized response.
private async handleGetFeatureDetails(args: any) { const featureName = this.validateFeatureName(args); try { // Check cache first if (this.featureCache.has(featureName)) { return this.createSuccessResponse(this.featureCache.get(featureName)); } // Fetch detailed feature information const featureInfo = await this.fetchFeatureDetails(featureName); // Save to cache this.featureCache.set(featureName, featureInfo); return this.createSuccessResponse(featureInfo); } catch (error) { this.handleAxiosError(error, `Feature "${featureName}"`); } } - src/index.ts:149-162 (registration)Registration of the get_feature_details tool in the MCP server's tool list, including name, description, and input schema definition.
{ name: "get_feature_details", description: "Get detailed information about a specific Better Auth plugin or feature", inputSchema: { type: "object", properties: { featureName: { type: "string", description: "Name of the Better Auth feature (e.g., \"two-factor\", \"github\", \"drizzle\")", }, }, required: ["featureName"], }, }, - src/index.ts:225-226 (registration)Dispatch case in the CallToolRequestSchema handler that routes get_feature_details calls to the handleGetFeatureDetails method.
case "get_feature_details": return await this.handleGetFeatureDetails(request.params.arguments); - src/index.ts:355-387 (helper)Key helper function that performs the actual data fetching and web scraping to get detailed feature information from Better Auth documentation.
private async fetchFeatureDetails(featureName: string): Promise<BetterAuthFeature> { // Find the feature in our categories const category = this.findFeatureCategory(featureName); if (!category) { throw new McpError(ErrorCode.InvalidParams, `Unknown feature: ${featureName}`); } const basicInfo = await this.fetchFeatureBasicInfo(featureName, category); try { const response = await this.axiosInstance.get(basicInfo.url); const $ = cheerio.load(response.data); // Extract detailed information const description = this.extractDescription($); const installation = this.extractInstallation($); const usage = this.extractUsage($); const config = this.extractConfiguration($); const examples = this.extractExamples($); return { ...basicInfo, description: description || basicInfo.description, installation, usage, config, examples, }; } catch (error) { // Return basic info if detailed fetch fails return basicInfo; } } - src/index.ts:744-752 (helper)Validation helper used by the handler to validate and normalize the featureName input parameter.
private validateFeatureName(args: any): string { if (!args?.featureName || typeof args.featureName !== "string") { throw new McpError( ErrorCode.InvalidParams, "Feature name is required and must be a string" ); } return args.featureName.toLowerCase(); }