Rapid Requiem

Rapid Requiem is a lightweight API testing tool and open source API client developed and maintained by Webrizen AI Labs Pvt Ltd.

It runs as a local web app and focuses on fast request testing, simple state management, and developer control. It is intended as a minimal Postman alternative for developers who want a fast API tester without a heavy workspace model.

Live URL: https://rapid-requiem.webrizen.com

Why It Exists

Modern API tools can become slow, account-driven, and overloaded with workflow features. Rapid Requiem follows an anti-bloat philosophy:

• Keep the interface focused on sending requests and reading responses.
• Keep saved data local by default.
• Avoid unnecessary telemetry, accounts, and hosted project state.
• Prefer native platform capabilities where they are sufficient.
• Add features only when they improve API testing without expanding the tool beyond its purpose.

Features

• Clean request and response workspace
• HTTP method and URL input
• Query parameter editor
• Header editor
• JSON body, raw body, and form field modes
• Server-side request proxy for local CORS-safe testing
• Response status, timing, size, and headers
• Pretty JSON and raw response views
• Local saved requests with reload and delete
• Local environment variables using {{variable_name}}
• Keyboard shortcut: Ctrl+Enter or Cmd+Enter to send

Demo

Use the hosted app at:

https://rapid-requiem.webrizen.com

The application is designed to run locally and store workspace data in your browser.

Installation

Clone the repository:

git clone https://github.com/Webrizen/rapid-requiem.git
cd rapid-requiem

Install dependencies:

npm install

Run the development server:

npm run dev

Open:

http://localhost:3000

Build for production:

npm run build

Start the production server:

npm start

Usage

1. Select an HTTP method.
2. Enter the request URL.
3. Add query parameters, headers, and body content as needed.
4. Use environment variables with {{variable_name}} when required.
5. Send the request with the Send button or Ctrl+Enter / Cmd+Enter.
6. Review response status, response time, headers, and body.

To save a request, use the Save action in the request workspace. Saved requests are stored locally in your browser and can be reloaded or deleted from the history panel.

Tech Stack

• Next.js
• React
• Tailwind CSS
• Native Fetch API
• TypeScript

Project Structure

app/
  api/proxy/route.ts     Server-side native fetch proxy
  globals.css            Tailwind import and dark theme base styles
  layout.tsx             App metadata and root layout
  page.tsx               Main client workspace
  privacy/page.tsx       Privacy Policy
  terms/page.tsx         Terms of Service
  license/page.tsx       License page
  ownership/page.tsx     Ownership and trademark page
components/
  EnvironmentPanel.tsx   Local variable editor
  HistoryPanel.tsx       Saved requests sidebar
  KeyValueEditor.tsx     Shared key-value row editor
  RequestPanel.tsx       Request builder
  ResponsePanel.tsx      Response metrics and body viewer
  SiteFooter.tsx         Footer links
  StaticPage.tsx         Static page shell
lib/
  request.ts             URL, environment, formatting, and request helpers
  storage.ts             LocalStorage persistence helpers
  types.ts               Shared TypeScript types
public/
  og-image.png           Open Graph image
  robots.txt             Search indexing rules
  sitemap.xml            Static page sitemap

Landing Page Content

Title:

Rapid Requiem | Lightweight Open Source API Client

Meta description:

Rapid Requiem is a lightweight API testing tool and open source API client for developers who need a fast API tester and Postman alternative that runs locally.

Hero:

Rapid Requiem: a lightweight Postman alternative

Rapid Requiem is a lightweight API testing tool for developers who want a fast API tester that runs locally. It provides the essential request and response workflow without account requirements, hosted workspaces, or unnecessary product layers.

Key features:

• HTTP method, URL, query parameter, and header editing
• JSON, raw body, and form field request modes
• Response status, timing, size, headers, and body views
• Local saved requests and browser-based persistence
• Environment variables using {{variable_name}} syntax
• Server-side request proxy for practical local API testing

Comparison vs Postman:

Postman is a broad API platform with collaboration, cloud workspaces, governance, and enterprise workflows. Rapid Requiem is intentionally narrower. It is an open source API client focused on local request testing, fast iteration, and a small surface area that developers can inspect and control.

Use cases:

• Developers testing REST endpoints during local development
• Freelancers who need a simple client for project API validation
• Backend engineers checking request payloads, headers, and responses
• Open-source maintainers who prefer a minimal, auditable API tool

Calls to action:

• Use Rapid Requiem: https://rapid-requiem.webrizen.com
• View on GitHub: https://github.com/Webrizen/rapid-requiem

Contribution Guide

Contributions are welcome when they improve the core API testing experience without adding avoidable complexity.

Recommended flow:

1. Fork the repository.
2. Create a focused feature or fix branch.
3. Make a small, reviewable change.
4. Run the project locally and verify behavior.
5. Open a pull request with a clear summary and screenshots when UI changes are involved.

Code expectations:

• Keep changes minimal and understandable.
• Preserve the local-first behavior of the tool.
• Avoid adding accounts, hosted sync, analytics, or unrelated workflow systems.
• Use existing component and utility patterns where possible.
• Prefer readable TypeScript over premature abstraction.
• Do not add large dependencies unless the benefit is clear and directly tied to API testing.

Important project rule:

Rapid Requiem should remain minimal. Features should be rejected or deferred when they make the tool slower, harder to inspect, or less focused.

Bug Reporting

Report bugs through GitHub Issues:

https://github.com/Webrizen/rapid-requiem/issues

Include:

• A clear description of the problem
• Steps to reproduce
• Expected behavior
• Actual behavior
• Browser and operating system
• Request method and body mode involved
• Console errors, if available
• Screenshots for UI issues

Do not include secrets, access tokens, private API keys, or confidential request payloads in public issues.

Feature Requests

Feature requests are considered when they align with the simplicity goal of the project.

Good feature requests usually:

• Improve request building
• Improve response inspection
• Improve local organization
• Reduce friction without introducing account-based workflows

Features that add broad project management, hosted collaboration, telemetry, or heavy workspace behavior are unlikely to be accepted.

Roadmap

Potential future improvements:

• Request tabs
• Environment presets
• Import and export
• Better collection organization
• More response formatting options

The roadmap may change based on maintainability and project focus.

SEO Metadata

Recommended title:

Rapid Requiem | Lightweight Open Source API Client

Recommended description:

Rapid Requiem is a lightweight API testing tool and open source API client for developers who need a fast API tester and Postman alternative that runs locally.

Recommended Open Graph image:

https://rapid-requiem.webrizen.com/og-image.png

Recommended keywords:

Postman alternative, lightweight API testing tool, open source API client, fast API tester, local API client, API testing, developer tools

License

Rapid Requiem is released under the MIT License.

Copyright (c) 2026 Webrizen AI Labs Pvt Ltd

See LICENSE for details.

Maintainer

Rapid Requiem is developed and maintained by Webrizen AI Labs Pvt Ltd.

Website: https://webrizen.com

Project URL: https://rapid-requiem.webrizen.com