hl_subscribe JSON-RPC Method

Access to /hypercore JSON-RPC methods requires a Build plan or higher. View pricing to upgrade. For complete stream type definitions and filtering options, see the datasets documentation. For concurrent stream caps and filter limits by plan, see the Streaming Limits table.

Need Low Latency?

For latency-sensitive applications, use HyperCore gRPC instead of WebSocket subscriptions. Quicknode's gRPC streaming API delivers market data with significantly lower overhead and is purpose-built for high-frequency trading and time-critical use cases.

Always send the full JSON-RPC envelope

Subscribe messages on /hypercore/ws must include the complete JSON-RPC envelope: jsonrpc, method, parámetros, y id. If jsonrpc o id is omitted, the message is routed to a different internal parser and rejected with errors such as Invalid message: missing field 'type' o -32604.

Parámetros

streamType

cadena

OBLIGATORIO

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filters

objeto

Cargando...

filterName

cadena

Cargando...

Devoluciones

resultado

objeto

Cargando...

tipo

cadena

Cargando...

stream

cadena

Cargando...

block

objeto

Cargando...

local_time

cadena

Cargando...

block_time

cadena

Cargando...

número_de_bloque

entero

Cargando...

events

matriz

Cargando...

Solicitud

1
wscat -c /hypercore/ws \
2
# wait for connection
3
{"jsonrpc":"2.0","method":"hl_subscribe","params":{"streamType":"trades"},"id":1}
4

1
wscat -c /hypercore/ws \
2
# wait for connection
3
{"jsonrpc":"2.0","method":"hl_subscribe","params":{"streamType":"trades"},"id":1}
4

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