Internet of Things APIs let you add internet of things 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 IoT Core API AWS IoT Core: managed cloud service for IoT device connectivity, MQTT messaging, and device shadows. | Paid | API Key | No | Profile | |
| Arduino IoT Cloud API Manage connected devices, things, properties, dashboards, triggers, and time-series data. | Freemium | OAuth | No | Profile | |
| Azure Aws Connector Microsoft.Aws Connector API 2024-12-01 61 Official Microsoft Azure REST API OpenAPI specification for specification/awsconnector/resource-manager/Microsoft.AwsConnector/stable/2024-12-01/iamMFADevice.json. | Paid | API Key | Yes | Profile | |
| Azure Aws Connector Microsoft.Aws Connector API 2024-12-01 66 Official Microsoft Azure REST API OpenAPI specification for specification/awsconnector/resource-manager/Microsoft.AwsConnector/stable/2024-12-01/iamVirtualMFADevice.json. | Paid | Unknown | Yes | Profile | |
| Blynk-Cloud Control IoT Devices from Blynk IoT Cloud | Freemium | API Key | No | Profile | |
| ClearBlade API A friendly little API to help you interact with the ClearBlade platform. | Unknown | API Key | Yes | Profile | |
| Hardware Sentry TrueSight Presentation Server REST API Hardware Sentry TrueSight Presentation Server REST API | Unknown | Unknown | Yes | Profile | |
| Hubitat Elevation API Hubitat Elevation API: local smart home automation, device control, and rule engine management. | Free | API Key | No | Profile | |
| Keyserv Solutions KeyServ API KeyServ API | Unknown | Unknown | Yes | Profile | |
| Meraki Dashboard API The Cisco Meraki Dashboard API is a modern REST API based on the OpenAPI specification. > Date: 05 March, 2023 > > [Recent Updates](https://meraki.io/whats-new/) --- [API Documentation](https://meraki.io/api) [Community | Unknown | Unknown | Yes | Profile | |
| Particle Cloud API Particle Cloud API for flashing firmware, publishing and subscribing to device events, calling functions, reading variables, and managing IoT devices. Token-based authentication. | Freemium | OAuth | No | Profile | |
| SmartThings API SmartThings API: Samsung smart home device control, automation rules, and hub management. | Free | API Key | No | Profile | |
| The Things Network API The Things Network API: LoRaWAN IoT device management, data storage, integrations, and network coverage. | Free | API Key | No | Profile | |
| groov View Public API #### Revised: 2019-11-21 ### Overview groov View Public API revision 1. | Unknown | Unknown | Yes | Profile | |
| smart-me API With the smart-me REST API you get Access to all your devices in the smart-me Cloud and you can add your own devices. So its an easy way to add the smart-me Cloud support to your Hardware or Software Product. | Unknown | Unknown | Yes | 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.