App Overview

API & HTTP Client icon

API & HTTP Client

Thien An Studio LLC · Developer Tools

This app is a powerful API Client and API Testing tool built for developers who need to send requests, inspect responses, and debug APIs anytime, anywhere

Free

PRICE
Free
No in-app purchases
BUSINESS MODEL
Free
No overall Grossing estimate available
RATING
5.0
1 ratings · Top 5%

Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.

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Build Kit

Make this idea yours

A product spec, screen plans, and build steps for your coding agent.

First kit free with a verified email

Add to a Remix

Combine features and design from your favorite apps.

Your first Build Kit is free with a verified email.

What's included

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
Preview a sample Build Kit No email needed

Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.

Feature spec

Goal: Send a clear invoice after finishing a job.

  • Add a client, line items, a due date, and payment instructions.
  • Preview the total before exporting a PDF.
  • Keep an editable draft if export fails.

Screen plan

Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.

States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.

Differentiate and validate

Hypothesis: Contractors need faster repeat invoices more than more templates.

First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.

The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.

Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.

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Free quick prompt For a smaller starting point

Quick prompt

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for API & HTTP Client: map the core Developer Tools workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

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Opportunities

AI-GENERATED OPPORTUNITY HYPOTHESES

These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.

Hypothesis 1

Competitive pricing with generous free tier

Assumption to check: Expensive subscription

Validate with people who use this workflow before building.

Hypothesis 2

Focus on most-requested features first

Assumption to check: Missing features

Validate with people who use this workflow before building.

Hypothesis 3

Optimize for 60fps, fast load times

Assumption to check: Poor performance

Validate with people who use this workflow before building.

App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

App Store description

This app is a powerful API Client and API Testing tool built for developers who need to send requests, inspect responses, and debug APIs anytime, anywhere. Whether you're working with REST APIs, GraphQL, WebSockets, or MCP (Model Context Protocol) servers, the app provides everything you need in one place. Test APIs faster, troubleshoot issues efficiently, and analyze responses with an intuitive interface designed for both beginners and experienced developers. - Key Features: + API Client & Request Testing * Send HTTP and HTTPS requests using GET, POST, PUT, DELETE, PATCH, HEAD, and OPTIONS. * Create and edit requests with an intuitive request editor. * View detailed request and response information, including headers, body, status code, response time, payload size, SSL details, and more. * Debug APIs without needing access to your desktop or terminal. + REST API, GraphQL & WebSocket Support * Test and debug REST APIs with ease. * Native GraphQL support with query editor, variables editor, and schema explorer. * Connect to WebSocket servers for real-time communication and testing. + MCP (Model Context Protocol) * Connect to remote MCP servers * Browse available tools, prompts, and resources. * Invoke MCP tools directly from the app. + JSON Viewer & Response Inspector * Automatically format and highlight JSON, HTML, XML, and plain text responses. * Easily inspect API responses for debugging and development. * Filter response data using JSONPath and XPath expressions. + OpenAPI, Swagger & Postman * Import and export Postman Collections and Environments. * Sync collections with your Postman Cloud account. * Support for OpenAPI and Swagger specifications. * Browse API documentation directly inside the app. + Authentication Supports multiple authentication methods, including: * Basic Authentication * Digest Authentication * OAuth 1.0a * OAuth 2.0 * JWT (JSON Web Token) * Additional authentication schemes with secure credential storage. + Productivity * Save reusable variables using Environments. * Import and export collections through iCloud Drive, Dropbox, and other document providers. * Automate API workflows with Apple Shortcuts. Whether you're a backend developer, mobile developer, frontend engineer, QA tester, or DevOps engineer, this app provides a complete solution for API testing, API debugging, REST API development, GraphQL, WebSocket, MCP, and OpenAPI workflows—all from your mobile device.

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Screenshots

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Build scope

Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.

Define the first version

Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.

Set boundaries

Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.

Check the hard parts

Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.

SUGGESTED BUILD STACK
React Native
Expo
Supabase
RevenueCat
BUILD KIT DIFFICULTY

Not assessed in a Build Kit yet.

A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.