Top AI tools for API Developer

Jsonlink.io is a developer-focused API that extracts structured metadata from any URL, enabling link previews and rich media embeds with minimal code.

• Freemium
• From 15$

JsonGPT offers a simple API to generate structured JSON data using various AI models like OpenAI and Gemini. It streamlines AI integration by handling validation, caching, and streaming.

• Freemium

Apollo GraphOS is a GraphQL developer platform that helps teams build, scale, and manage APIs. It offers solutions for faster development, improved quality, and powerful tooling.

• Freemium

Sparrow is an AI-enhanced API testing and collaboration platform designed to streamline development workflows. It supports REST, WebSocket, Socket.IO, and GraphQL protocols, offering automated testing, AI assistance, and secure team collaboration features.

• Freemium
• From 10$

MCP Fabric seamlessly turns RESTful APIs into fully hosted, AI-ready MCP servers, enabling quick integration with Large Language Models (LLMs) without complex coding. Streamline API-to-AI connectivity, add context, and leverage advanced telemetry for powerful AI workflows.

• Free Trial
• From 10$

API7 is an API management platform built on Apache APISIX, enabling unified management, security, and scaling of APIs across diverse systems and clouds.

• Paid
• From 250$

Hanabi.rest is an AI-powered platform that allows users to build and deploy REST APIs from natural language and screenshots. It supports multiple runtimes including Cloudflare Workers, Fastly, Deno, and Node.js.

• Usage Based

Gravitee is an advanced API management platform that consolidates the management of APIs, event streams, and agentic AI systems, enabling secure, fast, and unified governance across multiple gateways and brokers.

• Paid
• From 1250$

Hasura offers a universal data access layer, enabling rapid development and deployment of high-quality APIs for applications and AI initiatives. It simplifies data access, accelerates innovation, and streamlines governance across various data sources.

• Freemium
• From 5$

DocDriven is a shared workspace that streamlines API development, offering visual design, real-time collaboration, and AI code generation.

• Free Trial
• From 15$

GraphDev is a comprehensive toolkit designed for GraphQL development, offering debugging, testing, and collaboration features. It incorporates an AI assistant for enhanced schema management and productivity.

• Freemium
• From 14$

dblayer is an AI-powered platform that connects databases to generate custom RESTful APIs and applications with built-in authentication and intelligent caching for developers and teams.

• Freemium
• From 19$

hapi is a secure, enterprise-grade Node.js framework designed for building scalable, high-quality backend applications with minimal overhead and extensive out-of-the-box functionality.

• Free

Dotcom-Monitor provides advanced website monitoring solutions with real-browser synthetic monitoring, API testing, and global performance tracking to ensure optimal digital experiences.

• Freemium
• From 20$

Andes is a comprehensive marketplace platform that connects developers with Large Language Model (LLM) APIs, enabling seamless integration of AI capabilities into applications.

• Contact for Pricing

Topaz is an open source cloud-native authorization service that provides fine-grained, real-time, policy-based access control for applications and APIs, combining OPA and Zanzibar approaches.

• Free

Motif is an AI-powered documentation assistant that helps teams maintain and manage technical content at scale.

• Contact for Pricing

AuthGPTs simplifies API security and SaaS deployment with a one-time purchase, offering tools for OAuth2, analytics, and payment integration. It is a cost-effective solution designed to streamline the launch of GPTs as complete SaaS products.

• Pay Once

Docuo is a lightweight platform that transforms your static content into interactive documentation websites, including developer hubs, API references, and product guides.

• Free

Grafbase is an enterprise-grade GraphQL Federation platform offering self-hosted deployment, high performance, and AI agent integration for unified API management.

• Free Trial
• From 2999$

Monoid is an open-source platform that transforms APIs into AI Agents, enabling LLMs to gain context and perform real-time actions through a seamless and customizable interface.

• Free Trial

Yao is a free, open-source application engine enabling developers to build web apps, REST APIs, and business solutions faster with integrated AI code generation and development tools.

• Free

BuildShip is a low-code visual backend builder that enables developers to create scalable APIs and workflows using AI-powered nodes and pre-built templates without complex coding.

• Freemium
• From 19$

noSwag is a platform for generating, executing, and monitoring API tests directly from OpenAPI/Swagger specifications. Simplify your API testing workflow from NoCode to ProCode.

• Freemium
• From 9$

HTTPie is a user-friendly API testing client available for both terminal and desktop environments, designed to simplify interaction with HTTP servers, RESTful APIs, and web services.

• Freemium

JSON Studio is a free online tool designed for formatting, validating, editing, and beautifying JSON data with enhanced visualization and conversion features.

• Free

Zudoku is an open-source framework for building highly customizable API documentation using OpenAPI specifications, featuring AI search and static site generation.

• Free

Treblle is an advanced API observability and management platform that offers real-time documentation, security monitoring, and compliance checking for modern API development.

• Contact for Pricing

Testnut is a comprehensive test automation tool for Web, Mobile, API, and Telecom domain testing. It offers features like parallel runs, CI/CD integration, and unlimited test runs, making QA cycles faster and more efficient.

• Contact for Pricing

Apidog Fast Request is a free IntelliJ IDEA plugin designed to accelerate API development for Java/Kotlin projects by automatically detecting endpoints, filling parameters, and enabling one-click request sending.

• Free

SpecToMCP enables users to generate Model Context Protocol (MCP) servers directly from OpenAPI specifications, streamlining the API creation process for both humans and artificial intelligence systems.

• Other

Step CI is an open-source API test automation framework that enables automated testing for security, performance, and load testing across REST, GraphQL, gRPC, and SOAP APIs.

• Freemium

Apinizer is a sophisticated API management platform that simplifies the entire API lifecycle with intuitive tools for design, security, monitoring, and deployment across multiple environments.

• Contact for Pricing

Tadata offers Model Context Protocol (MCP) servers as a service, simplifying integration between developers, AI agents, and digital products.

• Free Trial

Cruderra is an AI-powered technical documentation platform that helps engineering teams streamline documentation creation, code modernization, and developer onboarding through automated scanning and AI assistance.

• Freemium
• From 28$

jsonAI is a powerful tool that converts various data formats into structured JSON using AI, offering customizable schemas and dedicated API endpoints for seamless integration.

• Freemium
• From 3$

Aspen is a free, native macOS app for testing REST APIs locally. It features an AI assistant to speed up API integrations, with no login required.

• Free

AI Spend is a cost monitoring platform that helps users track and analyze their OpenAI API usage and expenses, providing real-time insights and notifications to manage API spending effectively.

• Paid

Aptori is an AI Security Engineer that proactively detects application and API vulnerabilities, prioritizes risks using semantic analysis, and automates code fixes to ensure continuous compliance and secure DevOps.

• Contact for Pricing

Line0 is an AI-powered platform designed to generate production-ready backend services in minutes, allowing developers to build and test APIs using natural language instructions.

• Freemium
• From 17$

FlowTestAI is a GenAI-powered Open Source IDE designed for crafting, visualizing, and managing API-first workflows. It offers a fast, lightweight, and localized solution for seamless API integration and enhanced privacy.

• Other

Qodex.ai is an AI-powered API testing platform that automates end-to-end testing processes with zero coding required, offering comprehensive test coverage and auto-healing capabilities for enterprise-level QA efficiency.

• Freemium
• From 199$

Mintlify provides a modern documentation platform that is beautiful, easy to maintain, and designed to convert users. It offers features like a web editor, AI assistance, and API playground.

• Freemium

Appvance AIQ is an intelligent quality platform that uses AI-driven test creation to deliver comprehensive software testing with near 100% application coverage, autonomous script generation, and continuous quality assurance across web, mobile, and API environments.

• Contact for Pricing

A web-based tool that provides real-time token counting and cost estimation for various Large Language Models (LLMs), including OpenAI's GPT models and Anthropic's Claude models.

• Free

Traceable AI is a comprehensive API security platform that provides unmatched API discovery, attack detection, and protection through AI-powered contextual analysis and threat hunting capabilities.

• Contact for Pricing

Stainless API automates the creation and maintenance of robust client libraries (SDKs) for various programming languages, saving significant development time and resources.

• Paid
• From 250$

SmartBear delivers a comprehensive suite of AI-powered tools for API development, testing, monitoring, and quality assurance to streamline the software delivery lifecycle.

• Free Trial

RapidMCP transforms existing REST APIs into AI-agent ready MCP servers without requiring backend modifications, enabling quick integration with AI agents supporting the MCP protocol.

• Freemium
• From 12$

AIProxy is a secure proxy service that helps iOS developers protect their API keys and integrate AI functionality into their apps without complex backend setup. It offers encryption, monitoring, and rate limiting capabilities.

• Freemium