AsyncAPI channel · Nasdaq · Nasdaq Cloud Data Service (NCDS) — Kafka Streams

NLSCTA

Nasdaq Last Sale Plus — CTA tape. Real-time last-sale data for securities on the CTA (Consolidated Tape Association) tape. Topic name `NLSCTA` appears verbatim in the Java SDK README example commands and TOPICS output.

Open source AsyncAPI → All Nasdaq channels Nasdaq provider profile
Provider: Nasdaq AsyncAPI: v2.6.0 Spec: Nasdaq Cloud Data Service (NCDS) — Kafka Streams Operations: 1 Messages: 1

Channel address

NLSCTA

Operations

subscribeNLSCTA
Consume NLS+ CTA-tape last-sale messages.

Messages

NcdsAvroMessage
Generic NCDS Kafka record envelope. Per the SDK READMEs the SCHEMA operation "returns the schema for the stream in Apache Avro format." Per-topic Avro schemas are retrieved at runtime from the SDK SCH
Content-Type: application/vnd.apache.avro+binary

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.

Work with this as data

Every channel here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for event channels

4 MCP tools reach this
  • find_channelsBrowse and filter every channel in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This channel 
curl "https://apis.io/api/v1/channels/nlscta"
All event channels 
curl "https://apis.io/api/v1/channels?limit=25"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.