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Slack ACTION

Update Message

Update a message. See the documentation
  • Action
  • Writes data
  • Destructive
  • OAuth
  • SDK
  • MCP

IMPLEMENTATION

Call this tool

Connect a user's Slack account once, then configure and run Update Message from your backend or agent.

import { PipedreamClient } from "@pipedream/sdk"

const pd = new PipedreamClient({
  projectId: process.env.PIPEDREAM_PROJECT_ID!,
  clientId: process.env.PIPEDREAM_CLIENT_ID!,
  clientSecret: process.env.PIPEDREAM_CLIENT_SECRET!,
  projectEnvironment: "production",
})

const result = await pd.actions.run({
  id: "slack_v2-update-message",
  externalUserId: "{external_user_id}", // any stable ID for this user in your system
  configuredProps: {
    slack_v2: { authProvisionId: "apn_xxxxxxx" },
    conversation: "Channel",
    timestamp: "Message Timestamp",
  },
})

console.log(result)

SCHEMA

Inputs

Pipedream supplies the connected account. Your application provides the operation-specific values below. Dynamic inputs are resolved against that user's account.

Update Message inputs
Property Type Description
conversation Channel string
Prefer a channel ID (e.g. C1234567890) — use List Channels to look it up; it resolves instantly. A channel NAME (e.g. general or #general) is also accepted, but resolving it scans up to 5 conversations.list pages (~5,000 channels), which is slow and, on large workspaces, can be rate-limited or fail with a ConfigurationError if the channel is beyond that bound — pass the ID whenever you have it. Depending on the action, this may also accept a user ID (opens a direct message) or a group DM ID — use Find User by Email / Find User by ID to resolve a user ID, or List Group Conversations for group DM IDs.
Required
timestamp Message Timestamp string
Timestamp of a message. e.g. 1403051575.000407.
Required
text Text string
Text of the message to send (see Slack's formatting docs). This field is usually necessary, unless you're providing only attachments instead. To mention a user, use <@U123> with their user ID. Do NOT append a display name after a pipe: Slack renders <@U123|Name> as literal text, not a mention.
Required
as_user Send as User boolean
Pass true to update the message as the authenticated user (bot users are treated as the authed user here too). Pass false (default) to update using the bot token instead. Slack only allows editing a message posted by the same identity now attempting the edit — check the message's user/bot_id via Get Channel History first if unsure.
Optional
attachments Attachments string
A JSON-based array of structured attachments, presented as a URL-encoded string (e.g., [{"pretext": "pre-hello", "text": "text-world"}]).
Optional

REFERENCE

Tool details

Behavior hints are published with the component in the Pipedream registry and surface as MCP tool annotations, so an agent can reason about a tool before it calls it.

Registry key
slack_v2-update-message
Version
0.2.11
App
Slack
Authentication
OAuth
Read-only
No
Destructive
Yes
Open world
Yes