CreatePostMessageSlackAction is an input datatype for creating a post message Slack action. It's used by the createSlackPostMessageAction() mutation field.

Table: CreatePostMessageSlackAction

ParameterTypeRequiredDefaultStabilityAvailabilityDescription
Some input parameters may be required, as indicated in the Required column. For return values, this indicates that you are assured a value if the field is requested for the results. 
Table last updated: Oct 14, 2026 
apiTokenStringyes Long-Term API token to authenticate with Slack.
channelsStringyes Long-Term List of Slack channels to message.
fieldsSlackFieldEntryInputyes Long-Term Fields to include within the Slack message. Can be templated with values from the result. See SlackFieldEntryInput.
labelsStringyes   Labels to categorize the action.
nameStringyes Long-Term Name of the action.
useProxyBooleanyes Long-Term Defines whether the action should use the configured proxy to make web requests.
viewNameStringyes Long-Term Name of the view of the action.