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FuseFuse
IntegrationsSlackActions

Post Slack message

Post a message as the installed Slack app.

Agent markdown

messages.post · Slack · v1

Details

Risk
Write
Idempotency
Unsafe
Availability
Default
Exposure
REST, SDK, MCP
MCP hints
readOnly=false, destructive=false, idempotent=false, openWorld=true

Scopes

  • chat:write

Input

Input schema
NameTypeRequiredConstraints
(root)objectYesadditionalProperties false
channel_idstringYesminLength 1; maxLength 64
textstringYesminLength 1; maxLength 40000
thread_tsstringNominLength 1; maxLength 64

Output

Output schema
NameTypeRequiredConstraints
(root)objectYesadditionalProperties false
channel_idstringYes
tsstringYes
textstringYes

Raw schema

Input
{
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "channel_id": {
      "type": "string",
      "minLength": 1,
      "maxLength": 64
    },
    "text": {
      "type": "string",
      "minLength": 1,
      "maxLength": 40000
    },
    "thread_ts": {
      "type": "string",
      "minLength": 1,
      "maxLength": 64
    }
  },
  "required": [
    "channel_id",
    "text"
  ]
}
Output
{
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "channel_id": {
      "type": "string"
    },
    "ts": {
      "type": "string"
    },
    "text": {
      "type": "string"
    }
  },
  "required": [
    "channel_id",
    "ts",
    "text"
  ]
}