docs(TSP-1437): document Slack Send Message outputs and Update Message tool step

_snippets/components/integrations/slack-tool-steps.mdx

@@ -2,6 +2,9 @@
   <Card href="/build/tools/tool-steps/slack/send-message" title="Send Message">
     Use a Tool step to send a message to your Slack channel.
   </Card>
+  <Card href="/build/tools/tool-steps/slack/update-message" title="Update Message">
+    Use a Tool step to edit a previously sent Slack message in place.
+  </Card>
   <Card href="/build/tools/tool-steps/slack/retrieve-messages" title="Retrieve Messages">
     Use a Tool step to retrieve messages from one of your Slack channels.
   </Card>

build/tools/tool-steps/slack/send-message.mdx

@@ -4,7 +4,7 @@
 description: "Send a message to a Slack channel from Relevance AI"
 ---
 
-The 'Slack - Send Message' Tool step allows you to send a message to one of your Slack channels from Relevance AI.
+The 'Slack - Send Message' Tool step allows you to send a message to one of your Slack channels from Relevance AI. Both the standard and advanced variants of this step return the same outputs.
 
 <Note>You can learn more about the Slack integration [here](/integrations/popular-integrations/slack).</Note>
 
@@ -13,7 +13,7 @@
 ## Add the 'Slack - Send Message' Tool step to your Tool
 
 <div style={{ width:"100%",position:"relative","padding-top":"56.75%" }}>
 <iframe src="https://app.supademo.com/embed/cmb77dn944hpdppkpmiavfbmi" frameBorder="0" title="Add the Python Tool step to your Tool" allow="clipboard-write; fullscreen" webkitAllowFullscreen="true" mozAllowFullscreen="true" allowFullscreen style={{ position:"absolute",top:0,left:0,width:"100%",height:"100%",border:"3px solid #5E43CE",borderRadius:"10px" }} />
 
 </div>
 
@@ -23,4 +23,33 @@
 2. Click 'Expand' to see the full Tool step
 3. Select the Slack channel you want to send the message to
 4. Add your message in the 'Message' field
-5. Click 'Run step' to test out your Tool step
+5. Click 'Run step' to test out your Tool step
+
+## Outputs
+
+After the message is sent, this Tool step returns two values you can reference in later steps:
+
+| Output | Description |
+|--------|-------------|
+| `ts` | The timestamp identifier of the sent message |
+| `channel` | The ID of the channel where the message was sent |
+
+Wire these outputs into a subsequent [Slack - Update Message](/build/tools/tool-steps/slack/update-message) step to edit the same message in place — for example, to show progress as a multi-step task completes.
+
+<Accordion title="Example: updating a progress checklist">
+This pattern sends one status message at the start of a run, then edits it as each task completes.
+
+**Send Message step** — posts the initial checklist:
+- Message: `Task progress:\n⬜ Step 1\n⬜ Step 2\n⬜ Step 3`
+- Outputs: `ts` and `channel` are saved for use in later steps
+
+**Update Message step** (after Step 1 completes):
+- Channel: reference the `channel` output from the Send Message step
+- Timestamp: reference the `ts` output from the Send Message step
+- Text: `Task progress:\n✅ Step 1\n⬜ Step 2\n⬜ Step 3`
+
+**Update Message step** (after Step 2 completes):
+- Text: `Task progress:\n✅ Step 1\n✅ Step 2\n⬜ Step 3`
+
+Each Update Message step edits the same original message rather than posting new replies, keeping the Slack channel tidy.
+</Accordion>

build/tools/tool-steps/slack/update-message.mdx

@@ -0,0 +1,61 @@
+---
+title: "'Slack - Update Message' Tool step"
+sidebarTitle: "Update Message"
+description: "Edit a previously sent Slack message in place using Relevance AI"
+---
+
+The 'Slack - Update Message' Tool step lets you edit the content of a previously sent Slack message. Use it together with the [Slack - Send Message](/build/tools/tool-steps/slack/send-message) step to update a message in place — for example, to show progress as a multi-step task completes.
+
+<Note>You can learn more about the Slack integration [here](/integrations/popular-integrations/slack).</Note>
+
+<Warning>This integration for Slack was developed by our team and is not affiliated with Slack. Please contact our Support for any questions/queries you may have.</Warning>
+
+## Inputs
+
+Two inputs identify which message to edit:
+
+| Input | Required | Description |
+|-------|----------|-------------|
+| `channel` | Yes | The ID of the channel containing the message. Use the `channel` output from a Send Message step. |
+| `ts` | Yes | The timestamp identifier of the message to edit. Use the `ts` output from a Send Message step. |
+
+At least one of the following must be provided to set the new content:
+
+| Input | Required | Description |
+|-------|----------|-------------|
+| `text` | No | The new plain-text or mrkdwn content for the message |
+| `blocks` | No | A [Block Kit](https://api.slack.com/block-kit) JSON array for richer message layouts |
+| `attachments` | No | A JSON array of legacy Slack message attachments |
+
+## Add the 'Slack - Update Message' Tool step to your Tool
+
+1. Create a new Tool, then search for the 'Slack: Update Message' Tool step
+2. Click 'Expand' to see the full Tool step
+3. Set the **Channel** field to the `channel` output from a preceding Send Message step
+4. Set the **Timestamp** field to the `ts` output from a preceding Send Message step
+5. Enter your updated message content in the **Text** field, or supply a Block Kit JSON array in the **Blocks** field
+6. Click 'Run step' to test
+
+## Updating a message in place
+
+Wire the `ts` and `channel` outputs from a [Send Message](/build/tools/tool-steps/slack/send-message) step directly into this step's inputs. Each time the Update Message step runs, it overwrites the content of that specific message — no new message is posted to the channel.
+
+<Accordion title="Example: updating a progress checklist">
+This pattern sends one status message at the start of a Tool run and edits it as each task completes, keeping the Slack channel tidy.
+
+**Send Message step** — posts the initial checklist:
+- Message: `Task progress:\n⬜ Step 1\n⬜ Step 2\n⬜ Step 3`
+- Outputs `ts` and `channel` for use in subsequent steps
+
+**Update Message step** (runs after Step 1 completes):
+- Channel: reference the `channel` output from the Send Message step
+- Timestamp: reference the `ts` output from the Send Message step
+- Text: `Task progress:\n✅ Step 1\n⬜ Step 2\n⬜ Step 3`
+
+**Update Message step** (runs after Step 2 completes):
+- Channel: reference the `channel` output from the Send Message step
+- Timestamp: reference the `ts` output from the Send Message step
+- Text: `Task progress:\n✅ Step 1\n✅ Step 2\n⬜ Step 3`
+
+Each Update Message step edits the same original message rather than posting new replies.
+</Accordion>

docs.json

@@ -301,6 +301,7 @@
                         "group": "Slack Tool Steps",
                         "pages": [
                           "build/tools/tool-steps/slack/send-message",
+                          "build/tools/tool-steps/slack/update-message",
                           "build/tools/tool-steps/slack/retrieve-messages"
                         ]
                       },