Playground

One HTTP request. Live chart. No sign-up.
Your channel is made by its key right here in the browser. Send a value below and watch it come back from the server in real time - then paste the same request into your device.
your device ─ GET /set/<key>?/=42 ─▶ U00 ─ /ch/<id> ─▶ any browser
1Your channel
API key secret · writes
Channel ID public · reads
…
The ID is SHA3-256(key): whoever knows the key writes to the channel, whoever knows the ID only watches it. Keep the key; share the ID.
Open the channel page ↗
2Send a value
Drag it - every move is a request
Send a wave every second, as a sensor does
The requests and the answers of the server appear here.
LIVE /temperature
—
live · from /history
What the server returns GET /get/<id> 
…
3Put it into your code

            

            
Your key is already in the examples. Any HTTP client works: GET with the query or
                POST with a form; several items in one request.

        

    


    
    

        

            
Channel

            
Made by its key, no sign-up. The key writes, the ID reads. The page of a channel:
                /ch/<id>.

        

        

            
Items

            
Name → value. Names are paths: /,
                /room1/temperature. <path>/_name
                is the title.

        

        

            
History

            
Every number is kept with its time and shown on the chart. Text is shown as it is.

        

        

            
Limits

            
A name up to 64 bytes, a value up to 10 KB, up to 10 writes a second from one address.

        

    


    

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