ActionSlackUpdated September 2026

How do I list every Slack channel?

Short answer: You can list channels in Slack by hand from its own interface, but it won’t repeat itself. On TinyCommand, add the Slack List Channels action to a workflow, map its 3 inputs from any upstream app, and it runs automatically every time the trigger fires. No code, and a free tier to start.

List Channels in Slack — start free All 45 Slack actions

List Channels in Slack — start free

Inputs

The fields this action accepts.

Every field can be mapped from an upstream trigger, AI step, table row, or hard-coded literal.

Field	Type	Required	Description
Channel Types types	options	Optional	Which types of channels to include
Limit limit	string	Optional	Number of channels to return (max 1000)
Exclude Archived exclude_archived	options	Optional	Exclude Archived. Options: Yes, No

Sample request

{
  "types": "{{trigger.types}}",
  "limit": "100",
  "exclude_archived": "{{trigger.exclude_archived}}"
}

Returns

{
  "ok": true,
  "channels": [
    {
      "id": "C1234567890",
      "name": "general",
      "is_private": false,
      "num_members": 42
    }
  ]
}

Use these fields in downstream nodes for routing, logging, or error handling.

Triggered by

Apps that pair well as the trigger for List Channels.

Any of these apps can fire this action as part of a workflow.

Gmail → Slack

1 Gmail triggers

Google Sheets → Slack

2 Google Sheets triggers

FAQ

Questions about List Channels.

What does the List Channels action do in Slack?

Lists public and/or private channels in the Slack workspace. Used to populate a channel picker before posting.

What inputs does List Channels require?

List Channels has no required inputs. Sensible defaults are applied if you leave fields blank.

Can I use dynamic inputs from earlier workflow nodes?

Yes. Any field on this action can pull values from upstream nodes, whether that's a form response, a trigger payload, an AI output, or a lookup result.

What happens if Slack returns an error?

The run history shows the failed step with its input and the error message Slack returned, so you can fix the input and run the workflow again. Automatic retries are built into HTTP steps only, where you can also set your own retry count and delay.

Does List Channels support batch operations?

Run List Channels inside a loop to process each item in an array. TinyCommand does not throttle calls for you, so for large arrays add a Delay step if you need to stay within Slack's rate limits.

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