AsyncAPI channel · Fireworks AI · Fireworks AI Streaming Inference API

/messages

Anthropic-compatible Messages endpoint. When `stream: true`, the response is `text/event-stream`. Unlike the OpenAI-compatible endpoints, each SSE event includes both an `event:` line naming the event type and a `data:` line carrying the JSON payload. Event types are enumerated below.

Open source AsyncAPI → All Fireworks AI channels Fireworks AI provider profile
Provider: Fireworks AI AsyncAPI: v2.6.0 Spec: Fireworks AI Streaming Inference API Operations: 2 Messages: 7

Channel address

/messages

Operations

publish
createAnthropicMessageStream
Open an Anthropic-compatible Messages stream.
streamAnthropicMessage
Receive Anthropic-compatible Message streaming events.

Messages

AnthropicMessageRequest
Body of POST /messages with stream=true.
Content-Type: application/json
AnthropicMessageStart
Opens an Anthropic-compatible message stream.
Content-Type: application/json
AnthropicContentBlockStart
Announces the start of a content block in the Message.
Content-Type: application/json
AnthropicContentBlockDelta
Incremental content for the active content block.
Content-Type: application/json
AnthropicContentBlockStop
Marks the end of a content block.
Content-Type: application/json
AnthropicMessageDelta
Top-level Message updates (e.g., stop_reason, usage).
Content-Type: application/json
AnthropicMessageStop
Terminates the Anthropic Messages SSE stream.
Content-Type: application/json

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/messages"
All event channels 
curl "https://apis.io/api/v1/channels?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

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.