AsyncAPI channel · Perplexity · Perplexity Streaming API (HTTP + Server-Sent Events)

/chat/completions

OpenAI-compatible Chat Completions endpoint. When the request body includes `stream: true`, the server upgrades the response to SSE and emits a sequence of `chat.completion.chunk` events terminated by a `data: [DONE]` sentinel (OpenAI-compatible behavior). Search results, citations, and the final `usage` object are documented to arrive in the final chunk(s) of the stream, not progressively.

Open source AsyncAPI → All Perplexity channels Perplexity provider profile
Provider: Perplexity AsyncAPI: v2.6.0 Spec: Perplexity Streaming API (HTTP + Server-Sent Events) Operations: 2 Messages: 3

Channel address

/chat/completions

Operations

publish
openChatCompletionsStream
Open an SSE stream for chat completions
receiveChatCompletionChunks
Receive SSE chat completion chunks

Messages

ChatCompletionStreamRequest
Chat Completions request with stream=true
Content-Type: application/json
ChatCompletionChunk
One `data:` SSE event whose payload is a JSON object with `object: chat.completion.chunk`. The stream ends with a terminal `data: [DONE]` line.
Content-Type: application/json
StreamDoneSentinel
OpenAI-compatible terminal SSE line `data: [DONE]` marking end of stream.
Content-Type: text/plain

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/chat-completions"
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.