Context7 MCP Clone

import { Tool } from '@modelcontextprotocol/sdk/types.js'; import { ApiClient } from '../api-client.js'; import { ResolveLibraryResponse } from '../types.js'; export class ResolveLibraryIdTool { private apiClient: ApiClient; constructor(apiClient: ApiClient) { this.apiClient = apiClient; } getTool(): Tool { return { name: 'resolve-library-id', description: 'Convert a library name to a Context7-compatible ID. Searches for the library in the database and returns matching results with ratings.', inputSchema: { type: 'object' as const, properties: { libraryName: { type: 'string', description: 'The name of the library to search for (e.g., "react", "next.js", "langchain")', }, }, required: ['libraryName'], }, }; } async handle(libraryName: string): Promise<ResolveLibraryResponse> { try { // Search for the library const searchResult = await this.apiClient.searchLibraries(libraryName); const libraries = searchResult.data || []; if (libraries.length === 0) { throw new Error(`No libraries found matching "${libraryName}"`); } // Format results const formattedLibraries = libraries.map((lib: any) => ({ id: `/${lib.full_name}`, name: lib.name, description: lib.description, ecosystem: lib.ecosystem, stars: lib.stars, benchmarkScore: lib.benchmark_score, reputation: lib.reputation, codeSnippets: lib.documentation_pages?.length || 0, })); // Select the best match const selected = formattedLibraries[0]; // Generate reasoning let reasoning = 'Exact name match'; if (selected.benchmarkScore > 90) { reasoning += ' with highest benchmark score'; } else if (selected.stars > 50000) { reasoning += ' with highest number of stars'; } else if (selected.reputation === 'high') { reasoning += ' with high reputation'; } return { libraries: formattedLibraries, selected: selected.id, reasoning, }; } catch (error: any) { throw new Error(`Failed to resolve library: ${error.message}`); } } }