Business APIs let you add business capabilities without building from scratch. Every entry below is profiled with trust signals — pricing model, authentication requirements, CORS support, rate limits, and live uptime checks — so you can compare options and pick production-safe choices instead of guessing from a link list.
| API | Pricing | Auth | CORS | Health | |
|---|---|---|---|---|---|
| AWS IoTAnalytics API Official AWS IoTAnalytics service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS KinesisAnalytics API Official AWS KinesisAnalytics service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS KinesisAnalyticsV2 API Official AWS KinesisAnalyticsV2 service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS MobileAnalytics API Official AWS MobileAnalytics service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| Adobe Experience Manager (AEM) API Swagger AEM is an OpenAPI specification for Adobe Experience Manager (AEM) API | Unknown | Unknown | Yes | Profile | |
| Akeneo PIM REST API Akeneo PIM REST API public API. | Unknown | API Key | Yes | Profile | |
| Apache Superset API to manage your BI dashboards and data sources on Superset | Free | API Key | Yes | Profile | |
| ArvanCloud Enables you to use ArvanCloud services | Freemium | API Key | No | Profile | |
| Botify API Botify Saas API | Free | Unknown | Yes | Profile | |
| Charity Search Non-profit charity data | Free | API Key | Yes | Profile | |
| Clearbit Logo API 2 Search for company logos and embed them in your projects | Unknown | API Key | Unknown | Profile | |
| ClickMeter API Api dashboard for ClickMeter API | Unknown | API Key | Yes | Profile | |
| CompanyAPI CompanyAPI public API. | Unknown | Unknown | Yes | Profile | |
| CompanyEnrich API for B2B company data enrichment, domain enrichment, and website enrichment | Freemium | API Key | No | Profile | |
| Customer.io App API API for Customer.io campaigns, newsletters, transactional messages, and workspace resources. | Freemium | API Key | Yes | Profile | |
| Customer.io Track API Customer event and profile tracking API for messaging automation. | Freemium | API Key | Yes | Profile | |
| Doc Converter API This api converts file formats of OpenXml and OpenOffice documents formats to vector files (e.g., svg) | Unknown | Unknown | Yes | Profile | |
| Domainsdb.info Registered Domain Names Search | Free | No | No | Profile | |
| Facebook Marketing API Facebook Marketing API: create and manage ad campaigns, audiences, and reporting for Facebook and Instagram ads. | Free | API Key | No | Profile | |
| Freelancer Hire freelancers to get work done | Freemium | OAuth | No | Profile | |
| Freshdesk API Freshdesk API for helpdesk and customer support: tickets, contacts, companies, SLA policies, automations, and multi-channel ticketing. | Freemium | API Key | No | Profile | |
| Funding Signals API Companies that just raised funding, scored as sales leads, from public SEC filings | Unknown | API Key | No | Profile | |
| Gateway REST API Gateway REST API public API. | Unknown | Unknown | Yes | Profile | |
| Gmail Flexible, RESTful access to the user's inbox | Freemium | OAuth | No | Profile | |
| Google AdMob API Official Google AdMob API REST API (v1beta) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google AdSense Management API Official Google AdSense Management API REST API (v2) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google AdSense Platform API Official Google AdSense Platform API REST API (v1alpha) discovered via Google APIs Discovery Service. | Freemium | Unknown | Yes | Profile | |
| Google Ads API Google Ads API: manage Google Ads campaigns programmatically, keyword planning, reporting, and bid management. | Free | OAuth | No | Profile | |
| Google Analytics Collect, configure and analyze your data to reach the right audience | Freemium | OAuth | No | Profile | |
| Google Analytics Admin API Official Google Google Analytics Admin API REST API (v1alpha) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Assured Workloads API Official Google Assured Workloads API REST API (v1beta1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Local Services API Official Google Local Services API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Marketing Platform Admin API Official Google Google Marketing Platform Admin API REST API (v1alpha) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Search Ads 360 API Official Google Search Ads 360 API REST API (v2) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Growth Services API Growth Services API public API. | Unknown | Unknown | Yes | Profile | |
| HelpMyAgent API Pay-per-call French company and procurement data APIs for AI agents. | Paid | Unknown | Unknown | Profile | |
| HubSpot API HubSpot CRM API for contacts, companies, deals, tickets, custom objects, workflows, and engagement tracking across marketing/sales/service hubs. | Freemium | API Key | Yes | Profile | |
| ID4i API ID4i HTTP API | Unknown | Unknown | Yes | Profile | |
| Instatus Post to and update maintenance and incidents on your status page through an HTTP REST API | Freemium | API Key | Yes | Profile | |
| Intercom API Intercom API for customer messaging: conversations, help center, product tours, push notifications, and user/company event tracking. | Paid | OAuth | Yes | Profile | |
| Invovate API Generate PDF, JSON & UBL invoices in 11 languages from one JSON POST | Freemium | API Key | No | Profile | |
| Jirafe Events API API endpoins for sending Jirafe events | Unknown | Unknown | Yes | Profile | |
| Legal Sandbox Georgia API Find verified legal specialists in Georgia from natural-language queries | Unknown | Unknown | Yes | Profile | |
| Logo.dev Automated company logo API that updates daily. Transform any domain or company name into verified logos. | Freemium | API Key | No | Profile | |
| LogoKit Logo API for brands, stocks, and cryptocurrencies | Freemium | API Key | No | Profile | |
| Mailchimp Send marketing campaigns and transactional mails | Freemium | API Key | No | Profile | |
| Meirra API SEO monitoring, email verification, lead generation, and marketing analytics | Paid | API Key | Yes | Profile | |
| Mist API > Version: **0.36.1** > > Date: **March 3, 2022** --- #### Available Documentation * [Postman](https://documenter.getpostman.com/view/224925/SzYgQufe) * [Open API](https://doc.mist-lab.fr/) --- #### Useful links * [Mist | Unknown | Unknown | Yes | Profile | |
| Native Ads Publisher API This is a Native Ads Publisher API it provides same functionality as Native Ads Publisher Account GUI. | Unknown | Unknown | Yes | Profile | |
| NetBox API API to access NetBox | Unknown | Unknown | Yes | Profile | |
| NioLeads LinkedIn Email Finder and Email Verifier | Freemium | API Key | No | Profile | |
| OOXML Automation API This API helps users convert Excel and Powerpoint documents into rich, live dashboards and stories. | Unknown | Unknown | Yes | Profile | |
| ORB Intelligence API Company lookup | Unknown | API Key | Unknown | Profile | |
| Orbit API Please see the complete Orbit API documentation at [https://api.orbit.love/](https://api.orbit.love/). | Unknown | Unknown | Yes | Profile | |
| PI Web API 2018 SP1 Swagger Spec API Swagger Spec file that describes PI Web API | Unknown | Unknown | Yes | Profile | |
| Personnel Data API API for reading and writing personnel data incl. data about attendances and absences | Unknown | Unknown | Yes | Profile | |
| Pipedrive API Pipedrive API for sales pipeline management: deals, contacts, activities, goals, and email sync with customizable CRM workflows. | Freemium | OAuth | Yes | Profile | |
| Redash Access your queries and dashboards on Redash | Freemium | API Key | No | Profile | |
| Redeal Analytics API Access analytics for Redeal | Unknown | Unknown | Yes | Profile | |
| SalesLoft Platform API SalesLoft helps transform sales teams into modern sales organizations - converting more target accounts into customer accounts | Unknown | Unknown | Yes | Profile | |
| Salesforce API Salesforce REST API: CRM data access, lead management, opportunity tracking, and workflow automation. | Freemium | Unknown | No | Profile | |
| Smartsheet Allows you to programmatically access and Smartsheet data and account information | Freemium | OAuth | No | Profile | |
| SwiftKanban Kanban software, Visualize Work, Increase Organizations Lead Time, Throughput & Productivity | Paid | API Key | No | Profile | |
| TikTok Marketing API TikTok Marketing API: create and manage TikTok ad campaigns, audience insights, and performance reporting. | Free | Unknown | No | Profile | |
| Tomba email finder Email Finder for B2B sales and email marketing and email verifier | Freemium | API Key | No | Profile | |
| Trello Boards, lists and cards to help you organize and prioritize your projects | Freemium | OAuth | No | Profile | |
| Tsapi TSAPI Tsapi TSAPI public API. | Paid | Unknown | Yes | Profile | |
| Vestorly API Vestorly Developers API | Unknown | Unknown | Yes | Profile | |
| Zendesk API Zendesk Support API for ticketing, help center, customer profiles, automations, SLA management, and multi-channel support workflows. | Freemium | API Key | No | Profile | |
| mailjet Marketing email can be sent and mail templates made in MJML or HTML can be sent using API | Freemium | API Key | No | Profile | |
| markerapi Trademark Search | Free | No | No | Profile |
Start with pricing and auth: free tiers and no-auth APIs are fastest to prototype with. Then check CORS if your app calls the API from the browser, and health before you commit — a great API that's been down for a week will block your launch. Each profile below shows all of these signals plus rate limits where documented.