search-problems
Search LeetCode problems by difficulty, tags, or other criteria to find coding challenges that match specific requirements.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| tags | No | Tags to filter by, separated by '+' (e.g., 'array+dynamic-programming') | |
| difficulty | No | Difficulty level | |
| limit | No | Maximum number of problems to return | |
| skip | No | Number of problems to skip |
Implementation Reference
- src/tools/problem-tools.ts:54-80 (registration)Registers the 'search-problems' MCP tool, including input schema and execution handler.// Search problems server.tool( "search-problems", { tags: z.string().optional().describe("Tags to filter by, separated by '+' (e.g., 'array+dynamic-programming')"), difficulty: z.enum(["EASY", "MEDIUM", "HARD"]).optional().describe("Difficulty level"), limit: z.number().min(1).max(100).optional().default(20).describe("Maximum number of problems to return"), skip: z.number().optional().default(0).describe("Number of problems to skip") }, async ({ tags, difficulty, limit, skip }) => { try { const data = await leetcodeService.searchProblems(tags, difficulty, limit, skip); return { content: [{ type: "text", text: JSON.stringify(data, null, 2) }] }; } catch (error: unknown) { const errorMessage = error instanceof Error ? error.message : String(error); return { content: [{ type: "text", text: `Error: ${errorMessage}` }], isError: true }; } } );
- src/tools/problem-tools.ts:63-79 (handler)Handler function for the 'search-problems' tool that calls LeetCodeService and formats response.async ({ tags, difficulty, limit, skip }) => { try { const data = await leetcodeService.searchProblems(tags, difficulty, limit, skip); return { content: [{ type: "text", text: JSON.stringify(data, null, 2) }] }; } catch (error: unknown) { const errorMessage = error instanceof Error ? error.message : String(error); return { content: [{ type: "text", text: `Error: ${errorMessage}` }], isError: true }; } }
- LeetCodeService.searchProblems method that executes the GraphQL search query with filters./** * Search for problems matching criteria */ async searchProblems(tags?: string, difficulty?: string, limit: number = 20, skip: number = 0) { return this.executeQuery(searchProblemsQuery, { categorySlug: "", limit, skip, filters: { tags: tags ? tags.split("+") : [], difficulty: difficulty || null } }); }
- src/graphql/queries.ts:146-175 (schema)GraphQL query definition for searching LeetCode problems used by the tool.export const searchProblemsQuery = ` query problemsetQuestionList($categorySlug: String, $limit: Int, $skip: Int, $filters: QuestionListFilterInput) { problemsetQuestionList: questionList( categorySlug: $categorySlug limit: $limit skip: $skip filters: $filters ) { total: totalNum questions: data { acRate difficulty freqBar frontendQuestionId: questionFrontendId isFavor paidOnly: isPaidOnly status title titleSlug topicTags { name id slug } hasSolution hasVideoSolution } } } `;