Api Design
The best 50 Api Design AI tools - Free & Paid
Explore 50 AI for Api Design
AIMLAPI.com offers a unified API endpoint for over 400 AI models spanning chat, image, video, audio, voice, text, 3D, and OCR. It supports sandbox testing, granular access control, batch requests, and an OpenClaw runtime for secure, human‑in‑the‑loop workflows.
Freemium
OpenRouter gives one API key to access 300+ models from 60+ providers, SDK‑compatible, with visual routing, automated fall‑back, edge hosting, data‑policy controls, and agentic tools for building efficient autonomous workflows.
Freemium
APIPark is an open-source AI gateway and API portal that simplifies AI model management, integration, and deployment, offering unified API formatting, lifecycle management, and secure multi-tenant support for efficient AI usage.
Free
ReAPIs accelerates API development using AI-driven tools. Simplifies YAML tasks via visual editor, automates documentation, ensures precision, boosts reusability, and facilitates collaboration for streamlined and precise API creation.
Free
APIPASS API Marketplace is a unified platform for discovering, testing, and integrating APIs across REST, GraphQL, and SOAP. It provides a searchable catalog with built-in testing tools, comprehensive documentation, and management workflows for streamlined deployment.
Freemium
toapis.com is a centralized model marketplace and API dashboard for comparing and routing across text, image, video, and audio models. It clarifies cost structures with token-, request-, and duration-based billing, and enables teams to set default routes with performance-informed fallback models for
Freemium
AskCodi accelerates backend and frontend development by generating REST/GraphQL APIs, UI components, and production‑ready agents. It offers an AI gateway, IDE/CLI integration, and a marketplace for ready‑to‑run templates, cutting boilerplate and speeding prototyping.
Freemium
- $20/mo
GenAPI is an API production tool that rapidly generates production-ready APIs, reducing backend development time from months to minutes. It enhances collaboration, supports integration with existing workflows, and optimizes resources for tech teams and enterprises.
Freemium
KeyAPI is a comprehensive REST API for TikTok data, offering over 70 endpoints across five categories that return clean, structured JSON. It enables access to influencer profiles, video analytics, follower graphs, TikTok Shop data, and product-level analytics for marketing, e-commerce, and data anal
Free trial
- $59/mo
CometAPI is a unified AI platform offering single-API access to 500+ models like GPT and Claude, streamlining integration across providers. It ensures high-speed concurrency, real-time analytics, and vendor flexibility for industries like e-commerce and finance.
Usage Based
apix-drive is a no-code business automation platform with 400+ integrations. Easily automate tasks across different systems, saving up to 50% of working time. Enhance productivity and customer engagement seamlessly.
Free trial
AI App Builder turns plain‑language app ideas into functional web prototypes. Drop screenshots, iterate design and code in real time, then deploy instantly. Built‑in templates cover portfolios, e‑commerce, and events, with export, hosting, and version‑control integration.
Freemium
Vapi is an AI tool that facilitates rapid voicebot development for various applications like customer support, sales, telehealth, etc. It provides features such as low-latency streaming, multilingual support, and customizable models to efficiently create sophisticated voice solutions.
Free trial
- $36
APIPod is a unified API gateway providing access to 100+ AI models for text, image, video, and audio generation. It simplifies production deployment with developer tools, agent orchestration, observability, and enterprise-grade reliability.
Freemium
claudeapi.com is a Claude-compatible API gateway offering direct access to Anthropic models with full SDK support and OpenAI-format compatibility. It enables seamless migration by simply swapping the base_url, while providing streaming, multi-region routing, and dedicated developer support.
Freemium
Pi.dev is a terminal-based coding agent for developers and teams, offering TUI, RPC/SDK modes, extensible TypeScript modules and packages, multi-provider model authentication, session/context management, RAG/memory primitives, and CLI tooling for automation and integration.
Free
SampleApp.ai enables rapid application prototyping and API integration within 60 seconds. It uses AI to generate customized sample applications, offers OAuth security, versioning, analytics, and forking capabilities, streamlining developer onboarding and enhancing engagement.
Free trial
CodingPlanX AI is a development planning tool that converts project requirements into structured plans with code scaffolding and task breakdowns. It integrates with Git and issue trackers to automate workflows and provides collaboration features with reporting for risk and resource management.
Freemium
Beagle Security automates web, API, and GraphQL penetration testing using AI trained on 350k workflows. It runs in CI/CD, reports to Jira/Azure/Slack, cuts manual effort, reduces false positives, and gives clear remediation guidance.
Freemium
- $8.25/mo
Code99 is an AI-powered tool that generates production-ready REST API code for Nest.js and TypeORM with built-in authentication, email integration, and Swagger API documentation.
Free
Lexica Aperture is a V5 text‑to‑image AI that generates up to 960×1440‑pixel images from natural‑language prompts. Its real‑time preview, prompt tweaking, and history features support rapid prototyping for designers, illustrators, and marketers.
Freemium
TheNeo is an AI-powered tool that generates high-quality API documentation with descriptive summaries and collaborative editing features.
Subscription
CodeAI turns plain‑English app concepts into editable code for frameworks like Next.js, auto‑generating components, routing, and deployment scripts. It integrates with GitHub and offers one‑click hosting on Vercel, Netlify, and Supabase, plus a template library.
Freemium
- $12/mo
DocDriven centralizes API documentation, design, and collaboration in a visual editor. Its drag‑and‑drop interface, autocomplete, cloud mock servers, real‑time teamwork, AI‑powered code generation, and automated changelogs streamline API development and maintain a single source of truth.
Freemium
apex.ai is a comprehensive platform providing safety-certified software tools and services for autonomous systems. Its modular products enable deterministic execution, high-speed data routing, repeatable testing, and automated deployment for robotics and embedded applications.
Freemium
DocuWriter.ai automatically generates technical documentation from source code, delivering Swagger‑compatible API docs, Postman collections, and UML diagrams. It produces test suites, adds code comments, refactors code, converts languages, and syncs updates via n8n in searchable knowledge spaces.
Paid
- $29
A command-line HTTP client with features such as syntax highlighting, JSON support, automatic authentication, API testing, network request debugging, and custom tool building. Available for Windows, Mac, and Linux.
DeepSeek API, available via Kie.ai, provides access to DeepSeek models R1 and V3 for complex reasoning and natural language processing.
Freemium
Alfred automatically generates integration code and data models from an OpenAPI spec, answers natural‑language API queries, and delivers language‑specific snippets for rapid implementation across platforms, reducing support tickets and speeding API onboarding.
Subscription
- $233/mo
CodeDesign.ai is an AI‑powered website builder that creates complete pages, copy, and layouts from prompts, allowing visual fine‑tuning. It offers cloud publishing, WordPress sync, clean code export, SSL, analytics, backups, and responsive design.
Subscription
- $99/mo
APIMaster.AI is a unified API gateway and marketplace providing OpenAI-compatible, fingerprint-verified access to premium AI models like GPT-5.4 and Claude Sonnet, with smart routing, auto-failover, and a shared balance system for seamless integration into existing workflows.
Paid
Contify News API provides a clean and granular, business-specific updates delivered through REST API and Webhooks.
Free trial
AI API is a unified interface that connects to 100+ AI models for text, code, image, video, and speech tasks via a single OpenAI-compatible endpoint. It simplifies switching between models without code changes, with built-in routing, failover, and monitoring for production-ready development.
Freemium
Eden AI offers a single API that consolidates LLMs, vision, OCR, speech, translation, and more from Meta, Mistral, AWS, Azure, Google, and OpenAI. It provides smart routing, fallback, cost/latency selection, batch processing, caching, and multi‑API key management.
Subscription
UX Pilot is an AI-powered UX/UI design tool that accelerates the design process, enabling users to create high-fidelity UI designs and wireframes in seconds. It integrates with Figma, streamlining UI generation, iteration, and design-to-development handoff.
Freemium
Apify is a web scraping and data extraction platform with over 3,000 pre-built scrapers. It supports integrations with various apps, offers anti-blocking features, and enables custom scraper development using its open-source library, Crawlee.
Freemium
Qodex is an automated API testing platform that streamlines test creation and execution, offering features like automated test generation, uptime monitoring, and real-time failure alerts, facilitating efficient testing in CI/CD workflows for developers and QA teams.
Free trial
YouApp combines metaphysics and personality science to connect users through methodologies like MBTI and astrology. It offers daily luck insights, divination tools, an AI matching system, and community engagement while prioritizing user privacy and authenticity.
Freemium
ApexAPI is a unified AI gateway that provides a single OpenAI-compatible endpoint for accessing 14+ major AI providers. Developers can switch between models from OpenAI, Anthropic, Google, and others by simply changing the model name, requiring only one API key for all integrations.
Paid
LinkedIn API is a secure interface for managing LinkedIn accounts and automating outreach, messaging, and engagement. It enables real-time data retrieval and workflow automation for sales, marketing, and recruitment.
Usage Based