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### The Internet of Things for Everyone The Adafruit IO HTTP API provides access to your Adafruit IO data from any programming language or hardware environment that can speak HTTP. The easiest way to get started is with [an Adafruit IO learn guide](https://learn.adafruit.com/series/adafruit-io-basics) and [a simple Internet of Things capable device like the Feather Huzzah](https://www.adafruit.com/product/2821). This API documentation is hosted on GitHub Pages and is available at [https://github.com/adafruit/io-api](https://github.com/adafruit/io-api). For questions or comments visit the [Adafruit IO Forums](https://forums.adafruit.com/viewforum.php?f=56) or the [adafruit-io channel on the Adafruit Discord server](https://discord.gg/adafruit). #### Authentication Authentication for every API request happens through the `X-AIO-Key` header or query parameter and your IO API key. A simple cURL request to get all available feeds for a user with the username "io_username" and the key "io_key_12345" could look like this: $ curl -H "X-AIO-Key: io_key_12345" https://io.adafruit.com/api/v2/io_username/feeds Or like this: $ curl "https://io.adafruit.com/api/v2/io_username/feeds?X-AIO-Key=io_key_12345 Using the node.js [request](https://github.com/request/request) library, IO HTTP requests are as easy as: ```js var request = require('request'); var options = { url: 'https://io.adafruit.com/api/v2/io_username/feeds', headers: { 'X-AIO-Key': 'io_key_12345', 'Content-Type': 'application/json' } }; function callback(error, response, body) { if (!error && response.statusCode == 200) { var feeds = JSON.parse(body); console.log(feeds.length + " FEEDS AVAILABLE"); feeds.forEach(function (feed) { console.log(feed.name, feed.key); }) } } request(options, callback); ``` Using the ESP8266 Arduino HTTPClient library, an HTTPS GET request would look like this (replacing `---` with your own values in the appropriate locations): ```arduino /// based on /// https://github.com/esp8266/Arduino/blob/master/libraries/ESP8266HTTPClient/examples/Authorization/Authorization.ino #include #include #include #include ESP8266WiFiMulti WiFiMulti; const char* ssid = "---"; const char* password = "---"; const char* host = "io.adafruit.com"; const char* io_key = "---"; const char* path_with_username = "/api/v2/---/dashboards"; // Use web browser to view and copy // SHA1 fingerprint of the certificate const char* fingerprint = "77 00 54 2D DA E7 D8 03 27 31 23 99 EB 27 DB CB A5 4C 57 18"; void setup() { Serial.begin(115200); for(uint8_t t = 4; t > 0; t--) { Serial.printf("[SETUP] WAIT %d...\n", t); Serial.flush(); delay(1000); } WiFi.mode(WIFI_STA); WiFiMulti.addAP(ssid, password); // wait for WiFi connection while(WiFiMulti.run() != WL_CONNECTED) { Serial.print('.'); delay(1000); } Serial.println("[WIFI] connected!"); HTTPClient http; // start request with URL and TLS cert fingerprint for verification http.begin("https://" + String(host) + String(path_with_username), fingerprint); // IO API authentication http.addHeader("X-AIO-Key", io_key); // start connection and send HTTP header int httpCode = http.GET(); // httpCode will be negative on error if(httpCode > 0) { // HTTP header has been send and Server response header has been handled Serial.printf("[HTTP] GET response: %d\n", httpCode); // HTTP 200 OK if(httpCode == HTTP_CODE_OK) { String payload = http.getString(); Serial.println(payload); } http.end(); } } void loop() {} ``` #### Client Libraries We have client libraries to help you get started with your project: [Python](https://github.com/adafruit/io-client-python), [Ruby](https://github.com/adafruit/io-client-ruby), [Arduino C++](https://github.com/adafruit/Adafruit_IO_Arduino), [Javascript](https://github.com/adafruit/adafruit-io-node), and [Go](https://github.com/adafruit/io-client-go) are available. They're all open source, so if they don't already do what you want, you can fork and add any feature you'd like.

Dweet.io allows users to share data from mobile, tablets, and pcs, and them to other devices and accounts across social media platforms. Dweet.io provides an API to access the different functionality of the Dweet.io service. Users can make REST calls to read and create dweets, lock and unlock things, and perform other calls. The API returns JSON and JSONP.

Registers, manages, indexes, and searches beacons.

KeyServ API

Welcome to the Netatmo swagger on-line documentation !

This site is a complement to the official Netatmo developper documentation using swagger to bring interactivity and easy testing of requests with the "try it" button (authenticate with the authorization code 0Auth2 flow by clicking the authenticate button in the methods). You can find the source code for this site can be found in the project netatmo-swagger-ui. You can also use the online swagger declaration file to generate code or static documentation (see netatmo-swagger-api).

#### Revised: 2019-11-21 ### Overview groov View Public API revision 1.

#### Revised: 6/15/2018 ### Overview This API provides secure access to a SNAP-PAC-R or -S series controller's variable and I/O tags. Confidentiality for API transactions is provided by HTTPS. Authentication uses HTTP Basic Authentication with an API key. An API key ID is submitted in the Basic Authentication userid field and API key value in the password field. **For more information visit:** [developer.opto22.com](http://developer.opto22.com) ### Examples **Read an array** of all the integer32 variables defined in the PAC's strategy. For example, on your SNAP-PAC-R or -S series controller at IP address, you would use the URL: ``` ``` and provide appropriate authentication. The GET response will be a JSON array of name-value pairs such as: ```json [ { "nMyVeryFavoriteNumber": 22 }, { "nWidgetsProducedToday": 22222 }, { "DELAY_LOOP_TIME_IN_MSECS" : 200 } ] ``` **Read the engineering units** (EU) of an analog input point configured in the PAC's strategy. For an analog input (I/O point) named aiTemperatureInDegreesF, use `` The GET response will be a single JSON name-value pair such as: ```json { "value": 72.22 } ``` ### Note on packet sizes: When doing POSTs or GETs, the JSON payload in the body should not exceed 3k (3072 bytes).

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 it's a easy way to add the smart-me Cloud support to your Hardware or Software Product.

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10 api specs