AsyncAPI channel · Bullish
· Multi-Order Book
/trading-api/v1/market-data/orderbook
Channel address
/trading-api/v1/market-data/orderbook
Operations
send
subscribe
## Subscribe
Multiple subscriptions could be opened within the same websocket.
The order book of different markets to be subscribed are controlled by the parameters in the subscription message listed
receive
subscribe-ack
After subscribing, the server sends :
- an acknowledgement
Then (L1 / L2 depending on your topic):
- an initial snapshot
- followed by incremental updates
receive
subscribe-nack
In case of *invalid* subscription message, an error rejection would be sent.
send
keepalive-ping
## Keepalive
In case nothing is subscribed to, keep the websocket connection alive.
receive
keepalive-pong
Acknowledgement returned by the server in response to a keepalive-ping.
send
unsubscribe
## Unsubscribe
Let you unsubscribe a specific topic while keeping your websocket opened.
receive
unsubscribe-ack
After unsubscribing, the server sends an acknowledgement.
receive
unsubscribe-nack
In case of *invalid* unsubscription message, an error rejection would be sent.
Messages
Subscription
Let you subscribe to a given topic
Content-Type:
Acknowledgment
Confirm the topic being subscribed
Content-Type:
Snapshot/Update for L1
Latest update for L1
Content-Type:
Snapshot/Update for L2
Latest update for L2
Content-Type:
Rejection
Explain why the topic could not be subscribed
Content-Type:
Keepalive Ping
Keepalive Ping
Content-Type:
Keepalive Pong
Keepalive Pong
Content-Type:
Unsubscription
Let you unsubscribe to a given index
Content-Type:
About AsyncAPI
The AsyncAPI specification describes event-driven APIs the way OpenAPI describes request/response APIs. A channel is the named pipe — a webhook URL, a Kafka topic, a WebSocket route, an MQTT subject — that producers and consumers publish or subscribe to. Each channel carries one or more messages with structured payloads, and an operation declares whether a given party sends or receives on that channel.
Browse every event-driven channel on the APIs.io network or compare with the broader Agent Skill and MCP server surfaces of the same providers.