How to vibe codePostman

Prerequisites

• Node.jsfree

  Runtime environment for building the desktop app and backend services

• GitHubfree

  Repository hosting and version control

AI coding tools

• Cursor

  AI code editor ideal for crafting complex desktop layouts, request builder state management, and multi-file React/Tauri components.

• Claude Code

  Powerful terminal agent for executing multi-step scaffolding, setting up SQLite schemas, and writing complex gRPC/HTTP client wrappers.

Build guide

1. 01Project Scaffolding and Desktop Wrapper

   Initialize a Next.js application integrated with Tauri v2 to create a cross-platform desktop application shell with native window controls and local file system access.

   Scaffold a new Next.js project integrated with Tauri v2 for desktop execution. Configure Tailwind CSS, TypeScript, and shadcn/ui. Set up a multi-pane layout with a sidebar for collections/environments, a central request editor with method selectors (GET, POST, PUT, DELETE, gRPC), header/body tab panels, and a response viewer pane with syntax highlighting using Monaco Editor. Ensure the layout supports resizable panes and dark mode by default.

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2. 02HTTP Client Execution Engine & Proxy

   Implement the core request-sending engine via a backend proxy route to bypass CORS limitations and handle custom headers, query params, and body payloads.

   Build a robust HTTP request execution engine in Node.js/Next.js API routes. Implement support for custom headers, query parameters, authorization types (Bearer token, Basic Auth, API Key), and request bodies (JSON, form-urlencoded, raw text, multipart form-data). Ensure the client captures response status codes, execution latency, response headers, and size metrics, returning them cleanly to the frontend response viewer.

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3. 03Environment Variables & Secret Resolution

   Create an environment variable management system supporting scoped variable interpolation (e.g., `{{base_url}}`) across requests.

   Create an environment variable management module. Allow users to define environments (e.g., Development, Production) containing key-value pairs and secure secrets. Implement a recursive string-interpolation utility that scans request URLs, headers, and bodies for double-curly-brace syntax (e.g., `{{variable_name}}`) and substitutes them dynamically right before executing any API request.

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4. 04Collections, Folders, and Turso Storage

   Set up a local Turso/SQLite database to persist collections, requests, history logs, and environment configurations.

   Integrate Turso SQLite database using Drizzle ORM to persist collections, folders, saved requests, execution history, and environments locally. Build UI tree components in the sidebar allowing users to organize requests into nested folders, drag and drop items, rename collections, and reload state instantly from the local database.

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5. 05OpenAPI Spec Import & Mock Server

   Add support for importing OpenAPI 3.0/3.1 JSON/YAML specs and generating instant local mock endpoints matching the spec paths.

   Implement an OpenAPI specification importer that parses YAML/JSON spec files using `@apidevtools/swagger-parser`. Automatically generate a sidebar collection from parsed endpoints. Build a local Express-based mock server router that reads active mock rules from collections or specs and dynamically returns mocked JSON responses with configurable latency and status codes.

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6. 06Collection Runner & Test Script Sandbox

   Build a collection runner that executes requests sequentially with data-driven files and sandboxed post-response assertions.

   Build a Collection Runner module that executes a sequence of saved requests in order. Implement a secure sandboxed execution environment using `isolated-vm` or vm2 to run post-response JavaScript test scripts (e.g., `pm.test()`, `pm.response.to.have.status(200)`). Display test results, pass/fail counts, and execution metrics in a dedicated runner dashboard.

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Cost vs paying for Postman