Developer tool APIs help you build, test, and deploy software more efficiently. From code formatting to API testing, these tools are designed to streamline the development workflow.
Last verified: November 12, 2026
| Name | Description | Auth | HTTPS | CORS | Uptime (30 days) |
|---|---|---|---|---|---|
| 24 Pull Requests | Project to promote open source collaboration during December | none | Yes | yes | 100% (5 checks) |
| Aether Bridge | Autonomous agent team management and API workflow orchestration | apikey | Yes | unknown | 100% (5 checks) |
| Agent Nexus | Continuously probed registry of APIs, MCP servers and CLIs callable by agents | none | Yes | yes | 100% (5 checks) |
| AgentDeals | Search and compare developer free tiers, startup credits, and pricing changes | none | Yes | yes | 100% (5 checks) |
| AgentPay Domain Lookup | DNS records, WHOIS/RDAP, IP ownership and domain reports for AI agents, paid per call via x402 | none | Yes | yes | 100% (5 checks) |
| AgentSEO | SEO API for AI agents: SERP analysis, keyword research, rank tracking, content gaps, and AI visibility workflows via REST and MCP | apikey | Yes | no | 100% (4 checks) |
| AI SENSE | Utility endpoints: time, hashing, encoding, QR codes, HTML to PDF, JSON, images, webhooks and temporary storage | none | Yes | yes | 100% (4 checks) |
| Amazonscraperapi | Amazon product, search & batch scraping API with residential proxies (1000 free) | apikey | Yes | no | 100% (5 checks) |
| AmberOne | Turn any website into a build-ready Android, iOS, PWA or Electron app project | apikey | Yes | no | 100% (5 checks) |
| AnswerLine | Answers, citations and sources from AI assistants and Google surfaces through one API | apikey | Yes | yes | 100% (5 checks) |
| AnyAPI | Hundreds of scraping and data APIs behind one key and one normalized JSON schema, priced per request in USD | apikey | Yes | no | 100% (5 checks) |
| API Grátis | Multiples services and public APIs | none | Yes | unknown | 100% (5 checks) |
| API League | World-class APIs in a single hub | apikey | Yes | yes | 100% (5 checks) |
| API Status Check | Real-time status and uptime monitoring for 270+ APIs and services | none | Yes | yes | 100% (5 checks) |
| API Tool Calls | API Tool Calls: Home cost planners, page to Markdown, SEO checks and recalls | none | Yes | no | 100% (5 checks) |
| ApicAgent | Extract device details from user-agent string | none | Yes | yes | 100% (5 checks) |
| ApiFlash | Chrome based screenshot API for developers | apikey | Yes | unknown | 100% (5 checks) |
| APILayer | APILayer is a unified API marketplace with 40+ production-ready APIs for finance, geolocation, weather, data, and AI. Trusted by 2.2M+ developers | none | Yes | unknown | 100% (5 checks) |
| apilayer userstack | Secure User-Agent String Lookup JSON API | oauth | Yes | unknown | 100% (5 checks) |
| APIs.guru | Wikipedia for Web APIs, OpenAPI/Swagger specs for public APIs | none | Yes | unknown | 100% (5 checks) |
| APIVerve | About 380 APIs behind one key: email and phone validation, IP, DNS and SSL lookups, exchange and VAT rates, VIN decoding and more | apikey | Yes | yes | 100% (5 checks) |
| APIzone | Independent uptime & status monitoring for 200+ popular APIs | none | Yes | yes | 100% (5 checks) |
| AppGoat | App Store + Google Play data API and remote MCP server: apps, reviews, keywords, rankings, top charts and competitors for Claude, ChatGPT and Cursor. | apikey | Yes | yes | 100% (5 checks) |
| ApyHub: A Complete API Catalog | Build and ship applications that scale using certified APIs for every use case | apikey | Yes | yes | 100% (5 checks) |
| Aquanode | Live GPU rental prices and availability across nine cloud providers | none | Yes | no | 100% (5 checks) |
| Autom | Our SERP API delivers lightning-fast Google search results at unbeatable prices. Built for developers who need reliable, scalable access to search data without the complexity of web scraping or CAPTCHA challenges. | apikey | Yes | yes | 100% (5 checks) |
| Azure DevOps | The Azure DevOps basic components of a REST API request/response pair | apikey | Yes | unknown | 100% (5 checks) |
| Beeceptor | Build a mock Rest API endpoint in seconds | none | Yes | yes | 100% (5 checks) |
| Bitbucket | Bitbucket API | oauth | Yes | unknown | 100% (5 checks) |
| Blague.xyz | La plus grande API de Blagues FR/The biggest FR jokes API | apikey | Yes | yes | 100% (5 checks) |
| Blitapp | Schedule screenshots of web pages and sync them to your cloud | apikey | Yes | unknown | 100% (5 checks) |
| Blynk-Cloud | Control IoT Devices from Blynk IoT Cloud | apikey | No | unknown | 100% (5 checks) |
| Bored | Find random activities to fight boredom | none | Yes | unknown | 100% (4 checks) |
| Brand.dev | API to personalize your product with logos, colors, and company info from any domain | apikey | Yes | yes | 100% (5 checks) |
| Brave Search API | An index of billions of pages in a single call | apikey | Yes | no | 100% (5 checks) |
| BrowserCat | Headless browser API for automation, scraping, and more | apikey | Yes | yes | 100% (5 checks) |
| BrowserSolver | Web unlocker API that fetches pages behind Cloudflare and DataDome, with JS rendering, crawling and screenshots | apikey | Yes | no | 100% (1 check) |
| Browshot | Easily make screenshots of web pages in any screen size, as any device | apikey | Yes | yes | 100% (5 checks) |
| CaptureKit | Screenshot API (PNG, JPEG, WebP, PDF) plus page content as Markdown and AI page analysis | apikey | Yes | no | 100% (1 check) |
| CDNJS | Library info on CDNJS | none | Yes | unknown | 100% (5 checks) |
| ChartBytes | Chart image API: turn a URL into a PNG or SVG chart (bar, pie, donut, stacked) | none | Yes | yes | 100% (5 checks) |
| Ciprand | Secure random string generator | none | Yes | no | 100% (5 checks) |
| Citability | AI visibility scoring for domains: ADP, llms.txt, Schema.org, MCP endpoints | none | Yes | yes | 100% (5 checks) |
| CitedBy | Which AI crawlers can read a site: robots.txt and server answer for each | none | Yes | yes | 100% (4 checks) |
| Clair | Live public web data as JSON: Google Search, Maps, News, Amazon, jobs, reviews & more, one API key | apikey | Yes | no | 100% (5 checks) |
| Claude Resets | Read-only JSON listing of Claude Code and Codex usage-limit reset events. Dataset is CC BY 4.0. Unofficial, not affiliated with Anthropic. | none | Yes | unknown | 100% (5 checks) |
| claudecookie | Convert cookie formats, check Claude sessions and generate Claude Code credentials | none | Yes | yes | 100% (5 checks) |
| Cloudflare | Manage DNS, CDN, Workers and other services; documented with an official OpenAPI 3.0 spec | apikey | Yes | no | 100% (5 checks) |
| Cloudflare Trace | Get IP Address, Timestamp, User Agent, Country Code, IATA, HTTP Version, TLS/SSL Version & More | none | Yes | yes | 100% (5 checks) |
| Codeberg | Git hosting, repos and issues via Gitea API | none | Yes | yes | 100% (5 checks) |
| Codex | Online Compiler for Various Languages | none | Yes | unknown | 100% (5 checks) |
| Cohesivity | Headless infra for agents: Postgres, hosting, email, storage, LLMs and third-party APIs through one API, with no signup to start | apikey | Yes | yes | 100% (5 checks) |
| Compute Comparison | GPU rental prices, providers, models and price history across cloud providers | none | Yes | no | 100% (4 checks) |
| Contentful Images | Used to retrieve and apply transformations to images | apikey | Yes | yes | 100% (5 checks) |
| CORS Proxy | Get around the dreaded CORS error by using this proxy as a middle man | none | Yes | yes | 100% (5 checks) |
| Corsfix | Corsfix lets you fetch any resource and bypass CORS errors, free for development environment | none | Yes | yes | 100% (5 checks) |
| crates.io | Rust crate versions, downloads and dependency metadata | none | Yes | yes | 100% (5 checks) |
| crawlbrulee | EU-native web scraping for AI agents & developers: turn any page into markdown, screenshots and more | apikey | Yes | no | 100% (4 checks) |
| CrustAPI | Live public Google and LinkedIn data as clean JSON | apikey | Yes | yes | 100% (5 checks) |
| CSV to JSON API | Convert CSV files to JSON with this API. Ideal for developers who want to automate data workflows and integrate structured data | apikey | Yes | yes | 100% (5 checks) |
| CurlShot | Screenshots, PDFs and scrolling videos of any URL, HTML or Markdown; free tier | apikey | Yes | yes | 100% (5 checks) |
| Databricks | Service to manage your databricks account,clusters, notebooks, jobs and workspaces | apikey | Yes | yes | 100% (5 checks) |
| DATPAQ | Developer-first APIs. Enterprise-ready infrastructure. Sampla data, avatars, image processing and a lot more. | apikey | Yes | yes | 100% (5 checks) |
| Diagrams.so | Generate editable draw.io architecture diagrams from text or infrastructure code | apikey | Yes | no | 100% (5 checks) |
| DigitalOcean Status | Status of all DigitalOcean services | none | Yes | unknown | 100% (5 checks) |
| DigMyName | Domain availability and registrar pricing across 52 TLDs | none | Yes | yes | 100% (5 checks) |
| Discord Timestamp Generator | Turns an ISO 8601 datetime or a Unix time into Discord timestamp codes in all 7 styles, with a format list endpoint and an OpenAPI 3.1 spec | none | Yes | yes | 100% (5 checks) |
| Docker Hub | Interact with Docker Hub | apikey | Yes | yes | 100% (5 checks) |
| DomainDb Info | Domain name search to find all domains containing particular words/phrases/etc | none | Yes | unknown | 100% (5 checks) |
| EndOfLife.date | Software end-of-life dates and support lifecycles | none | Yes | yes | 100% (5 checks) |
| Enterno | HTTP headers, DNS, SSL, WHOIS and redirect checks as plain text, JSON or CSV | none | Yes | yes | 100% (5 checks) |
| EveryInfra | Structured data from 90 platforms (RedNote, Douyin, TikTok, Amazon and more), web search and CAPTCHA solving via REST or MCP | apikey | Yes | no | 100% (5 checks) |
| ExtendsClass JSON Storage | A simple JSON store API | none | Yes | yes | 100% (5 checks) |
| Fair Draw | Verifiable random draws bound to the drand public randomness beacon | none | Yes | yes | 100% (5 checks) |
| FireDash Fire Hydrant Public API | Live fire hydrant data: location, flow rate in GPM, and whether each hydrant is in or out of service. Sourced from the fire departments that maintain them | apikey | Yes | yes | 100% (5 checks) |
| Form Creation API | Create and manage customizable forms within your applications | apikey | Yes | yes | 100% (5 checks) |
| Format JSON Online Dummy API | A free tool to generate dummy JSON data for testing and prototyping. | none | Yes | yes | 100% (5 checks) |
| FormForge | Generate styled, accessible HTML forms from JSON definitions with validation | none | Yes | yes | 100% (5 checks) |
| Gcore CDN | Make your app fast and responsive for a global audience with Gcore CDN. | apikey | Yes | yes | 100% (5 checks) |
| Gcore Cloud | Scalable, secure, and reliable hybrid cloud services anywhere in the world. | apikey | Yes | yes | 100% (5 checks) |
| Gcore DNS | Fast and resilient DNS hosting service by Gcore. Improve the performance and availability of your online business. | apikey | Yes | yes | 100% (5 checks) |
| GcrawlAI | Web scraping, SERP API, screenshots, URL to Markdown and prebuilt extractors | apikey | Yes | yes | 100% (5 checks) |
| GeekFlare | Provide numerous capabilities for important testing and monitoring methods for websites | apikey | Yes | unknown | 100% (5 checks) |
| Generate Full Webpage Screenshot | Dynamically capture full page screenshots of websites. | apikey | Yes | yes | 100% (5 checks) |
| GeraCode | Barcode (EAN-13, UPC-A, Code 128, ITF-14) and QR code images, PNG or SVG. Docs in Portuguese | none | Yes | yes | 100% (5 checks) |
| GitHub | Make use of GitHub repositories, code and user info programmatically | oauth | Yes | yes | 100% (5 checks) |
| GithubTrends | GitHub Trending repositories with star history and open-source alternatives to paid tools | none | Yes | yes | 100% (5 checks) |
| Gitlab | Automate GitLab interaction programmatically | oauth | Yes | unknown | 100% (5 checks) |
| Go Module Proxy | Go module versions and source metadata | none | Yes | unknown | 100% (5 checks) |
| Google Docs | API to read, write, and format Google Docs documents | oauth | Yes | unknown | 100% (5 checks) |
| Google Firebase | Google's mobile application development platform that helps build, improve, and grow app | apikey | Yes | yes | 100% (5 checks) |
| Google Fonts | Metadata for all families served by Google Fonts | apikey | Yes | unknown | 100% (5 checks) |
| Google Keep | API to read, write, and format Google Keep notes | oauth | Yes | unknown | 100% (5 checks) |
| Google PageSpeed Insights | Website performance and Lighthouse audit scores | apikey | Yes | yes | 100% (5 checks) |
| Google Sheets | API to read, write, and format Google Sheets data | oauth | Yes | unknown | 100% (5 checks) |
| Google Slides | API to read, write, and format Google Slides presentations | oauth | Yes | unknown | 100% (5 checks) |
| Gorest | Online REST API for Testing and Prototyping | oauth | Yes | unknown | 100% (5 checks) |
| Hasura | GraphQL and REST API Engine with built in Authorization | apikey | Yes | yes | 100% (5 checks) |
| Heroku | REST API to programmatically create apps, provision add-ons and perform other task on Heroku | oauth | Yes | yes | 100% (5 checks) |
| Hex | Elixir and Erlang package versions and docs | none | Yes | unknown | 100% (5 checks) |
| Homebrew Formulae | Package and cask data for the Homebrew package manager | none | Yes | unknown | 100% (5 checks) |
| Hoppscotch | A lightweight, fast, and customizable app for testing and designing APIs. A free, fast, and beautiful | none | Yes | unknown | 100% (5 checks) |
| Host.io | Domains Data API for Developers | apikey | Yes | yes | 100% (5 checks) |
| HostDealRadar | Source-backed hosting price and provider record lookup | none | Yes | yes | 100% (5 checks) |
| Hourora | Current time, DST-aware conversion, all IANA zones with clock changes, city and coordinate lookup | none | Yes | yes | 100% (5 checks) |
| HTTPie | a free command-line HTTP client for the API era | none | Yes | unknown | 100% (5 checks) |
| httpSMS | Use your Android phone as an SMS gateway to send and receive SMS messages via a simple HTTP API | apikey | Yes | yes | 100% (5 checks) |
| Hunter | API for domain search, professional email finder, author finder and email verifier | apikey | Yes | unknown | 100% (5 checks) |
| IBM Text to Speech | Convert text to speech | apikey | Yes | yes | 100% (5 checks) |
| Icanhazip | IP Address API | none | Yes | yes | 100% (5 checks) |
| IFTTT | IFTTT Connect API | none | Yes | unknown | 100% (5 checks) |
| Image-Charts | Generate charts, QR codes and graph images | none | Yes | yes | 100% (5 checks) |
| import.io | Retrieve structured data from a website or RSS feed | apikey | Yes | unknown | 100% (5 checks) |
| Index Agentica | Agent-first directory of skills, MCP servers, tools, protocols and APIs as JSON, markdown, llms.txt | none | Yes | yes | 100% (5 checks) |
| Insomnia | A free API client that allows you to design, debug, test, and mock APIs locally, on Git, or cloud. | oauth | Yes | unknown | 100% (5 checks) |
| ip-fast.com | IP address, country and city | none | Yes | yes | 80.0% (5 checks) |
| IPify | A simple IP Address API | none | Yes | unknown | 100% (5 checks) |
| IPinfo | Another simple IP Address API | none | Yes | unknown | 100% (5 checks) |
| IPLocate | IP geolocation and threat data API | none | Yes | yes | 100% (5 checks) |
| IPQuery | A free IP Geolocation and proxy/tor/VPN detection API | none | Yes | yes | 100% (5 checks) |
| ipv4 Network Tools | DNS, WHOIS, SSL, email validation, IP geolocation and blacklist lookups | apikey | Yes | yes | 100% (4 checks) |
| Irmu | Web scraping API and hosted MCP server: JavaScript rendering, screenshots, proxy rotation, AI JSON extraction, ChatGPT answers and Booking.com search data | apikey | Yes | unknown | 100% (5 checks) |
| Ironfang Render | Screenshots, PDFs, dynamic images, QR codes and video from URLs or HTML | apikey | Yes | no | 100% (5 checks) |
| Is This Site Down? | Check if any website is down, from two continents; live status, uptime history and TLS expiry | none | Yes | yes | 100% (5 checks) |
| jsDelivr | Package info and download stats on jsDelivr CDN | none | Yes | yes | 100% (5 checks) |
| JSONPlaceholder | Fake REST API for testing and prototyping | none | Yes | yes | 100% (5 checks) |
| JSONsilo.com | Hassle-free JSON hosting. Convert your JSON file to an API in minutes at no cost. | apikey | Yes | yes | 100% (5 checks) |
| jstash | Save JSON with one request and get a URL; private JSON for each signed-in user of your app | apikey | Yes | no | 100% (5 checks) |
| Keyvalue | Simple key-value storage REST API for quick prototyping | none | Yes | unknown | 80.0% (5 checks) |
| Labelixa | Render, validate and generate Zebra ZPL label barcodes as PNG/PDF | apikey | Yes | yes | 100% (5 checks) |
| latest@ | Latest versions and end-of-life dates for 500+ software products | none | Yes | yes | 100% (1 check) |
| License-API | Unofficial REST API for choosealicense.com | none | Yes | no | 100% (5 checks) |
| Litport Free Proxy | Live-tested HTTP, SOCKS4, and SOCKS5 proxies with latency, uptime, and geolocation | none | Yes | no | 100% (5 checks) |
| LiveOrDown | Live up/down status of 240+ online services, checked every minute from 3 regions | none | Yes | yes | 100% (5 checks) |
| LogBrew | Send app errors, logs, traces and metrics over REST or OpenTelemetry (OTLP), then read them back with a project key | apikey | Yes | yes | 100% (5 checks) |
| macadress | MAC address and OUI vendor lookup synced from IEEE, with randomized-MAC detection | none | Yes | yes | 100% (5 checks) |
| MacVendorCheck | MAC address and OUI vendor lookup from the IEEE MA-L, MA-M and MA-S registries | none | Yes | yes | 100% (1 check) |
| Markdown to HTML API | This API lets you upload and transform a Markdown file to HTML | apikey | Yes | yes | 100% (5 checks) |
| Markdown to JSON API | Upload Markdown and get JSON with one API call | apikey | Yes | yes | 100% (5 checks) |
| Micro-SaaS AI Suite | 8 serverless AI APIs for sentiment analysis, copy generation, email verification, & OCR | apikey | Yes | unknown | 100% (5 checks) |
| MicroENV | Fake Rest API for developers | none | Yes | unknown | 100% (5 checks) |
| mxverify | Dollar value of one followed backlink from any website, with the published model behind it | apikey | Yes | yes | 100% (4 checks) |
| MY IP | Get IP address information | none | Yes | unknown | 100% (5 checks) |
| MySQL Visual EXPLAIN | Transform MySQL EXPLAIN output to interactive graphs | none | Yes | yes | 100% (5 checks) |
| NameGender | Gender from a first name, full name, email or username, with probability | apikey | Yes | yes | 100% (5 checks) |
| Neon | Serverless PostgreSQL with a REST API to manage projects, branches and run SQL over HTTP | apikey | Yes | yes | 100% (5 checks) |
| Nerdulator | Everything derivable from one value: numbers, dates, colours, UUIDs, cron expressions | none | Yes | yes | 100% (5 checks) |
| Netbait IP Scorer | Netbait is a free IP reputation API designed to help users determine whether an IP address has been involved in attacks, scanning attempts, or other malicious a | none | Yes | yes | 20.0% (5 checks) |
| Netlify | Netlify is a hosting service for the programmable web | oauth | Yes | unknown | 100% (5 checks) |
| NetworkCalc | Network calculators, including subnets, DNS, binary, and security tools | none | Yes | yes | 100% (5 checks) |
| NiuProxy | Residential proxies for web scraping, AI agents and automation, with flexible IP rotation, 190+ countries, and HTTP(S)/SOCKS5 support | apikey | Yes | no | 100% (5 checks) |
| NoneCap | hCaptcha solver API: submit a sitekey and page URL, get back a valid hCaptcha token. Supports regular, invisible and enterprise sitekeys | apikey | Yes | yes | 100% (5 checks) |
| npm Registry | Query information about your favorite Node.js libraries programatically | none | Yes | unknown | 100% (5 checks) |
| NuGet | .NET package versions, metadata and search | none | Yes | yes | 100% (5 checks) |
| Olostep | AI-native web search, scraping, and crawling API that delivers clean, structured, real-time web data. Used by top AI companies | apikey | Yes | yes | 100% (5 checks) |
| OneSignal | Self-serve customer engagement solution for Push Notifications, Email, SMS & In-App | apikey | Yes | unknown | 80.0% (5 checks) |
| Open Page Rank | API for calculating and comparing metrics of different websites using Page Rank algorithm | apikey | Yes | unknown | 100% (5 checks) |
| OpenAPIHub | The All-in-one API Platform | x-mashape-key | Yes | unknown | 100% (5 checks) |
| OpenApps | Rankings, launches and featuring across the ChatGPT, Claude, Cursor and Grok Bot app stores | none | Yes | yes | 100% (4 checks) |
| OpenGraphr | Really simple API to retrieve Open Graph data from an URL | apikey | Yes | unknown | 100% (5 checks) |
| Openhook | Capture HTTP, email and DNS callbacks in private inboxes for integration testing, with REST access and cursor-based waiting | apikey | Yes | no | 100% (5 checks) |
| OpenQR | Generate QR codes and manage dynamic (editable) QR codes with scan analytics | apikey | Yes | yes | 100% (5 checks) |
| OpenWeb Ninja | The web data & SERP API stack for AI engineers, app developers, and GTM teams. 40+ fast and reliable APIs for accurate, real-time public data from across the we | apikey | Yes | yes | 100% (5 checks) |
| Orca Scan | Generate barcode images (QR, Code 128, EAN, Data Matrix and more) in SVG, PNG, JPG or PDF | none | Yes | yes | 100% (5 checks) |
| OutageDeck | Live status and incidents for 170+ cloud and SaaS providers from official feeds | none | Yes | yes | 100% (5 checks) |
| oyyi | API for Fake Data, image/video conversion, optimization, pdf optimization and thumbnail generation | none | Yes | yes | 100% (5 checks) |
| Packagist | PHP Composer package versions and dist metadata | none | Yes | no | 100% (5 checks) |
| PageBolt | Screenshot, PDF, video recording, OG image, and page inspection via REST API | apikey | Yes | yes | 100% (5 checks) |
| PageCDN | Public API for javascript, css and font libraries on PageCDN | apikey | Yes | yes | 100% (5 checks) |
| PayUs-as-a-Service (PUaaS) | A self-hostable API that returns randomized messages for past-due invoices | none | Yes | no | 100% (5 checks) |
| Peak | Cloudflare Turnstile and 5-second challenge solving, pay per successful solve, 1,000 free solves | apikey | Yes | yes | 100% (5 checks) |
| Piloterr | Piloterr web scraping API handles headless browsers, rotates proxies for you, and offers json-parsed data extraction | apikey | Yes | yes | 100% (5 checks) |
| PipeDream | Pipedream is the fastest way to build powerful applications that connect all the services in your stack | oauth | Yes | unknown | 80.0% (5 checks) |
| Posthook | Schedule webhooks for future delivery with retries and delivery tracking | apikey | Yes | no | 100% (5 checks) |
| Postman | Tool for testing APIs | apikey | Yes | unknown | 100% (5 checks) |
| Proxed AI | Secure AI APIs in iOS - No SDK, Just Change Your API URL | apikey | Yes | yes | 100% (5 checks) |
| Proxifly | Rotating proxy API that returns tested HTTP, SOCKS4 and SOCKS5 proxies, filterable by country | none | Yes | yes | 100% (4 checks) |
| Proxmox VE API | API of self-hosted Proxmox VE. Address: https://your.server:8006/api2/json/ (configuring in installation process) | apikey | Yes | unknown | 100% (5 checks) |
| ProxyCrawl | Scraping and crawling anticaptcha service | apikey | Yes | unknown | 100% (5 checks) |
| Pusher Beams | Push notifications for Android & iOS | apikey | Yes | unknown | 100% (5 checks) |
| Pusher Channels | Realtime features | apikey | Yes | unknown | 100% (5 checks) |
| QR & Barcode | QR codes and barcodes (Code 128, EAN-13, Data Matrix, PDF417 + more). SVG or PNG output | none | Yes | yes | 80.0% (5 checks) |
| QR code | Create an easy to read QR code and URL shortener | none | Yes | yes | 100% (5 checks) |
| QR Code Crafter | Generate static QR codes in SVG, PNG, JPG, WebP, PDF, or EPS | none | Yes | yes | 100% (5 checks) |
| QR code Generator | Static and Dynamic QR code generator with custom and unique QR code design | apikey | Yes | unknown | 100% (5 checks) |
| QR Kept | Free QR code API: one GET request returns an SVG, no key or account needed | none | Yes | yes | 100% (4 checks) |
| Qrcode Monkey | Integrate custom and unique looking QR codes into your system or workflow | none | Yes | unknown | 100% (5 checks) |
| QRX | Artistic, branded QR codes from a text prompt and a link, checked to scan | apikey | Yes | no | 100% (5 checks) |
| RealUptime | Manage uptime monitors, heartbeat checks, incidents and status pages with an API key | apikey | Yes | no | 100% (5 checks) |
| ReefAPI | One API for 185+ live web data sources including search, social, e-commerce, real estate, jobs and finance, returning clean JSON | apikey | Yes | no | 100% (5 checks) |
| Render API | Lets you programmatically manage your Render services (web apps, APIs, and static sites) including deployments, scaling, and configuration | apikey | Yes | unknown | 80.0% (5 checks) |
| Renderwolf | Screenshots, PDFs, dynamic images, QR codes and video from URLs or HTML | apikey | Yes | no | 100% (5 checks) |
| Rendlet | HTML or JSON templates (invoice, itinerary) to PDF; free tier 100 docs/month | apikey | Yes | yes | 100% (4 checks) |
| ReplyNodes | Convert a public web page into clean Markdown | none | Yes | no | 100% (5 checks) |
| ReqRes | A hosted REST-API ready to respond to your AJAX requests | none | Yes | unknown | 100% (5 checks) |
| RSS to JSON | Returns RSS feed in JSON format using feed URL | none | Yes | yes | 100% (5 checks) |
| RubyGems | Ruby gem metadata, versions, dependencies and search | none | Yes | yes | 100% (5 checks) |
| SavePage.io | A free, RESTful API used to screenshot any desktop, or mobile website | apikey | Yes | yes | 100% (5 checks) |
| ScrapeNinja | Scraping API with Chrome fingerprint and residential proxies | apikey | Yes | unknown | 100% (5 checks) |
| ScraperApi | Easily build scalable web scrapers | apikey | Yes | unknown | 100% (5 checks) |
| scraperBox | Undetectable web scraping API | apikey | Yes | yes | 100% (5 checks) |
| scrapestack | Real-time, Scalable Proxy & Web Scraping REST API | apikey | Yes | unknown | 100% (5 checks) |
| ScrapeUnblocker | Web scraping API that renders every page in a real browser, gets past Cloudflare, DataDome, PerimeterX and Akamai, and returns HTML or parsed JSON | apikey | Yes | no | 100% (5 checks) |
| Scrapfly | Scrapfly is an enterprise-grade solution providing Web Scraping API that aims to simplify the scraping process by managing everything: real browser rendering, rotating proxies, and fingerprints (TLS, HTTP, browser) to bypass all major anti-bots. | apikey | Yes | no | 100% (5 checks) |
| ScrapingAnt | Headless Chrome scraping with a simple API | apikey | Yes | unknown | 100% (5 checks) |
| ScrapingBot | Web scraping, AI extraction, and public TikTok, Instagram, Google and Amazon data as JSON | apikey | Yes | no | 100% (5 checks) |
| ScrapingDog | Proxy API for Web scraping | apikey | Yes | unknown | 100% (5 checks) |
| Scrappa | Google Search, Maps, Jobs, YouTube and review site results as structured JSON | apikey | Yes | yes | 100% (5 checks) |
| Scrax | Web scraping API that only bills for successful scrapes | apikey | Yes | unknown | 100% (5 checks) |
| Screenshot | Take programmatic screenshots of web pages from any website | apikey | Yes | yes | 100% (5 checks) |
| Screenshot Happy | Website screenshot API (PNG/JPEG/PDF) with full-page capture and visual-diff monitors | apikey | Yes | no | 100% (5 checks) |
| Screenshot Scout | Screenshot API for developers that captures any URL in one HTTP request with predictable output | apikey | Yes | unknown | 100% (5 checks) |
| ScreenshotAPI.net | Create pixel-perfect website screenshots | apikey | Yes | yes | 100% (5 checks) |
| Screenshotbase | Screenshot API, 1000 free requests per month | apikey | Yes | yes | 100% (5 checks) |
| ScreenshotOne.com | Convert URLs, HTML, or Markdown into PNG, JPEG, WebP, or PDF with a simple screenshot API | apikey | Yes | yes | 100% (5 checks) |
| Scrnify | Screenshot and video capture API to transform any URL into high-quality images and recordings | apikey | Yes | yes | 100% (5 checks) |
| SearchApi | Real-Time Google SERP API | apikey | Yes | no | 100% (5 checks) |
| SearXNG | Open-source meta-search engine aggregating results from multiple sources | none | Yes | yes | 100% (5 checks) |
| SegmentLite | Lightweight event routing and webhook fan-out API alternative to Segment | apikey | Yes | yes | 100% (5 checks) |
| Sent.dm | Sent is a unified API for messaging across SMS and apps like WhatsApp | apikey | Yes | yes | 100% (5 checks) |
| SEO Score | Comprehensive SEO audit with 28 checks, scoring, and prioritized recommendations | apikey | Yes | yes | 100% (5 checks) |
| SEO Tags Generator API | The Generate SEO Tags API generates all the most important META tags based on any content | apikey | Yes | yes | 100% (5 checks) |
| SERP Rank Checker | Check realtime Google SERP Rank of any keywords | apikey | Yes | yes | 100% (5 checks) |
| SerpApi - Search API | SerpApi's Search API makes it easy and fast to scrape Google and other search engines | apikey | Yes | no | 100% (5 checks) |
| SerpKite | Google Search, News, Maps, Images, Scholar and Patents results as JSON or Markdown for AI agents | apikey | Yes | yes | 100% (5 checks) |
| Serply | Google, Bing, News, Scholar and Maps search results and page scraping as JSON | apikey | Yes | yes | 100% (5 checks) |
| serpstack | Real-Time & Accurate Google Search Results API | apikey | Yes | yes | 100% (5 checks) |
| Shadify | Service for generating data and executing logic to create various games and puzzles | none | Yes | yes | 100% (5 checks) |
| Sheet2API | Easy Google Sheets and Excel Online API | apikey | Yes | unknown | 100% (5 checks) |
| Shotanvil | Screenshot, PDF and HTML rendering API with a free tier, API key or x402 auth | apikey | Yes | no | 100% (5 checks) |
| Shotkiln | Screenshots, PDFs and Open Graph images from a URL or HTML, with a free tier | apikey | Yes | yes | 100% (5 checks) |
| Site-Shot | Website screenshot API: any URL to PNG, JPEG or WebP in one GET request, full page, ad and cookie-banner removal. Free plan: 100 captures a month, no card | apikey | Yes | yes | 100% (4 checks) |
| SnapAPI | Developer utility API with 13+ tools: QR codes, screenshots, image processing, hashing, and more | apikey | Yes | yes | 100% (5 checks) |
| SnapRender | Website screenshots as PNG, JPEG, WebP or PDF, and page content as markdown, with a free tier | apikey | Yes | yes | 100% (5 checks) |
| SnoopScan | Scrape, crawl, map and search the web as clean markdown or JSON, with a free monthly tier | apikey | Yes | unknown | 100% (5 checks) |
| SolidPing | Create and run uptime checks, read results and incidents, manage status pages, with a free tier | apikey | Yes | unknown | 100% (5 checks) |
| Sonar | Project Sonar DNS Enumeration API | none | Yes | yes | 100% (5 checks) |
| SonarQube | SonarQube REST APIs to detect bugs, code smells & security vulnerabilities | oauth | Yes | unknown | 100% (5 checks) |
| SQLable | CSV to JSONL conversion API | none | Yes | yes | 100% (5 checks) |
| StackExchange | Q&A forum for developers | oauth | Yes | unknown | 100% (5 checks) |
| Suprsonic | Unified agent API: search, scrape, enrich, image gen, TTS, STT, messaging. One key, 20+ capabilities | apikey | Yes | yes | 100% (5 checks) |
| Svix | Webhooks as a Service | apikey | Yes | unknown | 100% (5 checks) |
| TheQRCode | Generate QR codes for URLs, WiFi, contact cards, email and text, with custom colors and styling | none | Yes | yes | 100% (5 checks) |
| Thunder Client | API testing tool | none | Yes | yes | 100% (5 checks) |
| Thunderbit | Extract web pages as Markdown or structured data for AI apps | apikey | Yes | unknown | 100% (5 checks) |
| TidyTools | Web page to clean Markdown and AI crawler robots.txt checks, free without a key (rate limited) | none | Yes | yes | 100% (5 checks) |
| TimeFoo | Current time, timestamp format conversion and IANA time zone conversion, no key needed | none | Yes | yes | 100% (4 checks) |
| TimeLogic | Current time, time zone conversion and DST, plus WorldTimeAPI-compatible routes. Free plan: 10,000 requests a month | apikey | Yes | yes | 100% (4 checks) |
| Timezone WorldTime | Current time, UTC offset and DST for any time zone or IP, a drop-in WorldTimeAPI replacement | none | Yes | yes | 100% (5 checks) |
| Timezones | Time now, conversions and DST changes for every IANA time zone, no key needed | none | Yes | yes | 100% (5 checks) |
| TinyMind Agent Tools | Free APIs by an AI agent on a VPS: actor lookup, word-of-the-day, poems, jokes, ping | none | Yes | yes | 100% (5 checks) |
| ToolForte | Deterministic utilities: IBAN/VAT validation, cron parsing, regex, diffs, Dutch holidays and test data | apikey | Yes | unknown | 100% (5 checks) |
| ToolsFox Utils | Free developer utility API: UUID, timestamps, SHA-256, Base64, URL encode/decode, random strings | none | Yes | yes | 100% (4 checks) |
| Tyk | Api and service management platform | apikey | Yes | yes | 80.0% (5 checks) |
| unfurlr | Link-preview metadata for any URL: title, Open Graph, Twitter tags, favicon, oEmbed | apikey | Yes | yes | 100% (5 checks) |
| Upstash | Serverless Redis, Kafka and vector database with REST APIs | apikey | Yes | yes | 100% (5 checks) |
| URLpipe | Turn a URL into Markdown, screenshots, metadata or Lighthouse audits, rendered in real Chrome | apikey | Yes | no | 100% (5 checks) |
| UserAgent | User agent parsing API is designed to help you better understand and interact with your users. By identifying browser, device, and OS data from user agent strings, this API empowers you with accurate, real-time insights into your audience. | apikey | Yes | yes | 100% (5 checks) |
| Userstack | Secure User-Agent String Lookup JSON API | oauth | Yes | unknown | 100% (5 checks) |
| Utilorax | 203 JSON endpoints: hashing, encoding, unit conversion, text, dates and file conversion | apikey | Yes | yes | 100% (5 checks) |
| Vornamencheck | Gender probability for a first name, optionally per country; documentation in German | none | Yes | yes | 100% (5 checks) |
| W3C Validator | Validate HTML and check markup errors | none | Yes | unknown | 100% (5 checks) |
| Web Metadata & Contact Extractor | Extract SEO metadata, contact emails, social links, and tech stack (<200ms) | apikey | Yes | yes | 100% (5 checks) |
| Webclaw | Web content extraction for LLMs with scrape, crawl, search, and summarize | apikey | Yes | yes | 100% (5 checks) |
| WebScraping.AI | Web Scraping API with built-in proxies and JS rendering | apikey | Yes | yes | 100% (5 checks) |
| WeInc | AI website builder: manage clients, website projects, templates and webhooks | apikey | Yes | no | 100% (5 checks) |
| XLSX Inspector | Inspect XLSX/XLSM structure: sheets, formulas, macros and external links | none | Yes | yes | 100% (5 checks) |
| YAMLine | Convert YAML to JSON (on-the-fly) | none | Yes | yes | 100% (5 checks) |
| Yumi Wheel Evidence | Intersect wheel tags for explicit PyPI releases with caller-supplied tags | none | Yes | yes | 100% (5 checks) |
| ZenRows | Web Scraping API that bypasses anti-bot solutions while offering JS rendering, and rotating proxies | apikey | Yes | unknown | 100% (5 checks) |
| Zuplo | API platform for Development, Deployment, and Docs - add auth, rate-limiting, and monetization fast | apikey | Yes | unknown | 100% (5 checks) |
108 of these APIs require no authentication — you can start making requests immediately without signing up for an account. Just pick one from the table above, check its documentation, and send your first request.
146 APIs in this category require a free API key. This usually means creating a free account on the provider's website and copying your key from the dashboard. The process typically takes less than a minute.
Not sure where to start? Check the uptime column: it shows how often each API's documentation responded to our daily checks over the last 30 days, and the dot shows whether it responded at the latest check. For browser-based projects, check that the API supports CORS.
Yes, all APIs listed on API Bouncer have a free tier. Some are completely open (no sign-up needed), while others require a free account to get an API key. Free tiers typically have rate limits — check each API's documentation for specifics.
It depends on your needs. Consider: Do you need authentication or prefer no-auth? Does your project need CORS support for browser access? How many requests will you make? Start with a no-auth API to prototype quickly, then switch to a more feature-rich option if needed.
We run periodic health checks on all listed APIs. The "Status" column shows whether each API was responding at our last check. APIs marked as "alive" were recently verified. You can also test any API yourself using curl or our guides on testing APIs.
Most free APIs allow commercial use, but terms vary by provider. Always check the specific API's terms of service. Some APIs have separate free and commercial tiers with different rate limits.
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