## EOS Tribe launched a beta version of it's web-socket streaming Spectrum API on Telos Mainnet (https://www.telosfoundation.io/).
### Telos Mainnet Spectrum API web-socket endpoint: wss://api.telos.eostribe.io
#### This version currently supports subscriptions for *get_actions*, *get_transaction* and *get_blocks* streams.
Here is the sample subscription message for *get_actions* endpoint:
```
{
"apikey":"test-api-key",
"event":"subscribe",
"type":"get_actions",
"data": {
"account":"eostribeprod",
“actions":[“transfer”,”buyram”]
}
}
```
### Fields description for get_actions:
* **event** - type of events, there are two variants: “subscribe” and “unsubscribe”. Required [String].
* **type** - type of endpoint. Required [String].
* **data** - Contents of this object depends on type argument. Required for get_actions.
* **account** - name of account. Required [String].
* **actions** - List of actions name. [Object]. If actions are not specified - all actions will be matched.
#### Endpoint *get_blocks* - subscribe on new block events:
Request message format for *get_blocks* endpoint:
```
{
"apikey":"test-api-key",
"event":"subscribe",
"type":"get_blocks"
}
```
### Fields description:
* **apikey** - key for access and accounting, not using on testnet.[String]
* **event** - type of event, there are two variants “subscribe” and “unsubscribe”. To subscribe necessary using "subscribe" * **value** - this field is mandatory. [String].
* **type** - type of endpoint. Required [String].
Below is the sample subscription message for *get_transaction* endpoint:
```
{
"apikey":"test-api-key",
"event":"subscribe",
"type":"get_transaction",
"data": {"account":"eosio"}
}
```
### Fields description for get_transaction:
* **apikey** - key for access and accounting, not using on testnet.[String]
* **event** - type of event, there are two variants “subscribe” and “unsubscribe”. To subscribe necessary using "subscribe" value . This field is mandatory. [String].
* **type** - type of endpoint. Required [String].
* **data** - Contents of this object depends on type argument. Required for get_transaction.
* **account** - name of account. Required [String].
### Sample JS web-socket client to subscribe for events:
```
<html>
<head><title>Spectrum Web Sockets</title>
<script>
let socket = new WebSocket("wss://api.telos.eostribe.io/streaming");
# pick one of declarations:
# 1. get_actions:
var messageBody = {
"apikey":"test-api-key",
"event":"subscribe",
"type":"get_actions",
"data": {"account":"eosio"}
};
#2. get_blocks:
var messageBody = {
"apikey":"test-api-key",
"event":"subscribe",
"type":"get_blocks"
};
#3. get_transaction:
var messageBody ={
"apikey":"test-api-key",
"event":"subscribe",
"type":"get_transaction",
"data": {"account":"eosio"}
};
socket.onopen = function(e) {
console.log("[open] Connection established");
console.log("Sending to server: "+JSON.stringify(messageBody));
socket.send(JSON.stringify(messageBody));
};
socket.onmessage = function(event) {
html_log("[message] Data received from server: "+event.data);
};
socket.onclose = function(event) {
if (event.wasClean) {
html_log("[close] Connection closed cleanly, code=${event.code} reason=${event.reason}");
} else {
html_log("[close] Connection died");
}
};
socket.onerror = function(error) {
html_log("[error] ${error.message}");
};
function html_log(data) {
var divLog = document.getElementById("log");
divLog.innerHTML += "<p>"+data+"</p>";
}
</script>
</head>
<body>
<h2>Spectrum Web Sockets Test: Get Actions</h2>
<div id="log"></div>
</body></html>
```
#### Feel free to give it a try and provide your feedback at out Telegram channel: https://t.me/EOSTribe
#### Original post describing Spectrum API architecture: https://steemit.com/eosio/@eostribe/introducing-spectrum-streaming-api-for-eosio
#### EOS Tribe is committed to continue work on creating innovative solutions for EOSIO.
hiveblocks