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Publish a message to a channel

ably_publish_message
Destructive

WRITE: publish a message to a channel. Every connected subscriber receives it in real time. This is a real, outward-facing side effect — confirm the channel and payload before calling. REST: POST /channels/{channel}/messages.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
dataYesMessage payload (string; send JSON as a stringified value).
nameNoOptional event name for the message.
channelYesChannel name to publish to, e.g. 'chat:room1'.
clientIdNoOptional clientId to attribute the message to.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • changedInput schema / $schema
      Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"
  2. First observed

TDQS

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