Backend Api
The best 50 Backend Api AI tools - Free & Paid
Explore 50 AI for Backend Api
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
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
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
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
Contify News API provides a clean and granular, business-specific updates delivered through REST API and Webhooks.
Free trial
Provides API access to pretrained image generation models for text‑to‑image, image‑to‑image, and inpainting, with real‑time editing. Supports single‑call Dreambooth/LoRA training without local GPU, plus voice cloning, text‑to‑3D, interior design, and video creation.
Paid
- $27/mo
Line0 automates backend development by generating production-ready services from natural-language descriptions, offering an in-browser editor with feature-specific chats, two-way GitHub sync, live API client with hot-reload and database preview, and built-in testing workflows.
Freemium
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
WebScraping.AI offers a single API that retrieves clean HTML, plain text, or JSON from any URL, handling JavaScript-heavy pages, proxies, CAPTCHAs, and retries. Users can query, extract fields, generate summaries via prompts, and integrate with SDKs or workflow tools.
Subscription
- $29/mo
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
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
Convex is a TypeScript backend platform that syncs app data in real time across frontend, backend, and database. It offers authentication, cron jobs, AI code generation, modular components, and integrates with React, Next.js, Remix, Vue, and Svelte, a developer portal.
Freemium
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
RealEstateAPI provides developers and real estate professionals with efficient access to extensive property data, offering features like bulk searches, property comparisons, and geo JSON parcel boundaries, all designed for high-performance data processing and historical analysis.
Freemium
Middleware.io is an AI-driven cloud observability platform designed for middleware businesses. It provides real-time monitoring of infrastructure, applications, logs, errors, and performance, enabling swift issue resolution and cost-effective observability optimization.
Freemium
- $10/mo
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
Sutro auto‑generates production‑grade backends from SLang data models, creating schemas, APIs, validation, and authentication. It eliminates boilerplate, syncs documentation, and supports prompt‑to‑backend and Figma‑to‑code conversions.
Freemium
Entry Point is an AI training platform that simplifies fine-tuning large language models using OpenAI and AI21 APIs.
Freemium
newapi is an open-source AI API gateway that unifies 30+ upstream providers under a single OpenAI-compatible endpoint, featuring centralized key management and model routing. It enables self-hosted control over load-balancing, failover, and per-user quotas without application changes.
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
Finlight Real-Time Financial News API offers real-time financial data and AI-driven sentiment analysis with advanced query options. It supports multiple integration methods, enabling seamless incorporation of market intelligence into applications and automated systems.
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
Portkey is an LLMOps platform offering a unified API and model catalog with observability, guardrails, RBAC, audit logs, prompt management, caching, routing and PII redaction to simplify multi-model integration, governance, monitoring, and cost optimization.
Free
- $49/mo
Chatbase builds and deploys AI customer support agents trained on business data, integrates with CRMs, Zendesk, Slack and WhatsApp, enables automated workflows, human escalation, analytics, multilingual support, and security controls (SOC 2, encryption).
Freemium
- $32/mo
BIK is an AI commerce platform that offers 100+ agents for acquisition, retention, support, order management, and analytics. It integrates with Shopify, APIs, webhooks, uses NLP for tickets, translations, and AI recommendations, and gives merchants data ownership and real‑time updates.
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
Deepfakes Web is a cloud face‑swap generator that lets users upload a face image and source video, producing high‑resolution MP4 swaps with an invisible watermark. Data stays on the user’s account, and developers can use a RESTful API for integration.
Paid
HireBase is an AI‑powered job search engine that scans 2.3 million employer‑direct postings, delivering real‑time, spam‑free listings. It offers advanced filters and an API for hiring data, enabling up‑to‑date recruitment and job‑matching.
Freemium
BuilderKit is a TypeScript Next.js SaaS boilerplate and AI starter kit that bundles modular code, prebuilt apps, AI modules (chat, text/image/speech), model integrations, Supabase/Postgres auth/storage, payments, SEO-ready UI, demos and deployment support.
Freemium
Bannerbear is a RESTful API that programmatically creates images, videos, and PDFs for marketing and e‑commerce. It supports single/multi‑image workflows, automated video production, PDF output, and integrates with Airtable, Zapier, Make, and WordPress via SDKs.
Free trial
- $49/mo
n8n is an open‑source workflow automation platform with a visual canvas and custom JavaScript/Python support. It connects to 500+ integrations, enables AI agents and RAG, offers audit logs, real‑time alerts, and can be self‑hosted on Docker or Kubernetes.
Free
Metatable is an AI-driven development platform that provides a seamless development experience with no coding required for developers to construct complete apps spanning front-end to backend, including infrastructure setup.
Freemium
BeeUnicorn lets merchants create unlimited‑product online stores with fast, mobile‑responsive front‑ends, secure payment gateways, and a global admin dashboard for bulk imports, API integration, inventory tracking, and customer support. Built‑in analytics and discount tools boost sales.
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
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
Basedash lets teams ask plain‑English questions of their data warehouses and SaaS sources, automatically generating validated SQL, executing it, and visualizing results in dashboards. It supports 750+ integrations, enforces SOC 2 compliance, and offers an embedding API for internal products.
Paid
Keel Studio turns natural‑language prompts into fully‑functional serverless backends. A single schema defines data, actions, and rules, automatically generating REST APIs, role‑based access control, observability, and custom jobs, while built‑in tool generators manage operations, finance, and invent
Freemium
ComfyOnline lets users run ComfyUI workflows online, automatically installing dependencies and models. It auto‑generates APIs for image, video, audio, and text generation, supports advanced services, LLMs, custom nodes, and scales with traffic.
Subscription
- $70/mo
Firebase Studio is a comprehensive AI workspace for developing backends, front ends, and mobile apps. It offers app prototyping, coding assistance, and deployment tools, and integrates seamlessly with version control platforms like GitHub and GitLab.
Freemium
Webapi.ai delivers AI‑powered virtual agents that handle multi‑step conversations, API calls, and notifications. It integrates with SaaS, websites, PDFs and supports channels like website widgets, WhatsApp, Facebook, SMS, providing analytics and human handoff.
Freemium
- $1200/mo
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