backend▌

Read the setup guide before making changes:

Backend architecture patterns and best practices for scalable server-side applications.

Structured decision-making framework for selecting and designing APIs across REST, GraphQL, and tRPC patterns. \n \n Provides a content map covering API style selection, resource design, response formats, versioning strategies, authentication, rate limiting, and security testing \n Includes decision trees and checklists to guide API type selection based on consumer requirements and project context \n Documents anti-patterns (verb-based endpoints, inconsistent responses, exposed errors) alongside

Framework selection, async patterns, type hints, and project structure decisions for Python development. \n \n Covers framework selection (FastAPI, Django, Flask) with decision trees based on project type, async requirements, and team context \n Teaches async vs sync decision-making for I/O-bound and CPU-bound workloads, with library recommendations for common async operations \n Includes type hint strategy, Pydantic validation patterns, and project structure templates from simple scripts to lar

Router for Rust questions, errors, and design patterns across ownership, async, and domain-specific architectures. \n \n Routes all Rust queries through a three-layer cognitive framework: language mechanics (ownership, borrowing, lifetimes), design choices (patterns, performance, error handling), and domain constraints (web, fintech, embedded, CLI) \n Automatically triggers negotiation mode for comparative queries (\"vs\", \"best practice\", \"compare\") and dual-skill loading when domain keywor

You are generating output schema files for an Apify Actor. The output schema tells Apify Console how to display run results. You will analyze the Actor's source code, create dataset_schema.json, output_schema.json, and key_value_store_schema.json (if the Actor uses key-value store), and update actor.json.

Production-ready Express.js servers with routing, middleware, authentication, and database integration. \n \n Covers core Express patterns including middleware chains, RESTful routing with CRUD operations, and error handling middleware \n Supports authentication via JWT, database integration with PostgreSQL and Sequelize, and environment-based configuration \n Includes best practices for input validation, async/await patterns, rate limiting, and HTTPS in production \n Reference guides provided f

Idiomatic Rust patterns and best practices for building safe, performant, and maintainable applications.

AI text and image generation for Node.js backends and CloudBase cloud functions. \n \n Supports text generation (non-streaming and streaming) via Hunyuan and DeepSeek models, with recommended models hunyuan-2.0-instruct-20251111 and deepseek-v3.2 \n Image generation exclusive to Node.js SDK using Hunyuan Image model with configurable size, style, negative prompts, and seed control \n Requires @cloudbase/node-sdk version 3.16.0 or higher; set cloud function timeouts to 60–120 seconds for text ope

Algo request on Binance using authenticated API endpoints. Requires API key and secret key for certain endpoints. Return the result in JSON format.