slotSubscribe

slotSubscribe — Subscribe to slot updates

post

wss://public.rpc.solanavibestation.comwss://lite.rpc.solanavibestation.comwss://basic.rpc.solanavibestation.comwss://ultra.rpc.solanavibestation.comwss://elite.rpc.solanavibestation.comwss://epic.rpc.solanavibestation.com

/

Subscribe to receive notification anytime a slot is processed by the validator. This method establishes a persistent WebSocket connection that will send real-time notifications whenever the validator processes a new slot. Each notification includes information about the current slot, its parent slot, and the current root slot. This subscription provides high-frequency updates about blockchain progression and is useful for monitoring network activity, tracking slot timing, and understanding the relationship between processed slots and finalized roots.

Authorizations

AuthHeaderURLParameter

AuthorizationstringOptional

Pass Authorization: <api-key> on each request.

Body

application/json

jsonrpcstring · enumRequired

JSON-RPC protocol version.

Example: 2.0Possible values:

idone ofRequired

Request identifier echoed back in the response.

Example: 1

stringOptional

or

integerOptional

methodstring · enumRequired

Must be slotSubscribe.

Example: slotSubscribePossible values:

paramsarrayRequired

No parameters.

Responses

200

Successful slotSubscribe response.

application/json

Base envelope of every JSON-RPC 2.0 response.

jsonrpcstring · enumRequiredExample: 2.0Possible values:

idone ofRequired

Echoed request id.

Example: 1

stringOptional

or

integerOptional

resultinteger · int64Required

Subscription id. Save this value to call the matching unsubscribe method later.

Example: 24040

401

Authentication required or invalid.

application/json

403

Insufficient permissions for the request.

application/json

429

Rate limit exceeded for this tier.

application/json

500

Unexpected server error.

application/json

post/

cURL / websocatPythonJavaScriptRust

# cURL doesn't speak WebSocket — use `websocat` (or `wscat -c`).
# Install:  cargo install websocat   # or  npm install -g wscat
echo '{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "slotSubscribe",
  "params": []
}' | websocat wss://public.rpc.solanavibestation.com

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": 24040
}