Official Carbon Voice community node for n8n. Send messages, post voice memos, manage action items, run AI prompts, and react to events across your Carbon Voice workspaces — all from your n8n workflows.
Note: This is a community node. Self-hosted n8n users can install it from the Community Nodes panel. n8n Cloud users need to enable community nodes in their account settings.
Starts a workflow when an event fires in Carbon Voice. One node, ten event types:
| Event | Fires when |
|---|---|
| New Message Received | Someone other than you posts a message in a conversation you're part of |
| Message Posted to Conversation | Any message lands in a specific conversation |
| New Voice Memo Posted | A new voice memo is posted (optionally scoped to workspace / folder) |
| Label Added to Message | A specific label is applied to a message |
| AI Response Generated | An AI prompt produces a response |
| AI System Response Generated | A curated system prompt produces a response |
| Action Item Created | A new action item is created |
| Action Item Updated | An action item is updated |
| Action Item Deleted | An action item is deleted |
| Action Item Status Changed | An action item's status changes (suggested → todo → done) |
Most events accept optional filters (workspace, folder, conversation, assigned user, etc.) so you only receive the events that match.
A single action node with five resources and ten operations:
| Resource | Operation |
|---|---|
| Conversation | Send Message |
| Send Direct Message (to one or more users by ID or email) | |
| Add Users | |
| Message | Add Link Attachments |
| Remove Label | |
| Create Share Link (public or specified-access) | |
| Voice Memo | Create (text-to-voice or upload audio binary) |
| Action Item | Create |
| Update (fields and/or status) | |
| AI Prompt | Create Response |
Dynamic dropdowns power the workspace, conversation, user, folder, label and AI prompt fields — no copy/pasting IDs.
- Open Settings → Community Nodes.
- Click Install.
- Paste
@carbonvoice/n8n-nodes-carbonvoiceand confirm.
After the package installs, restart n8n. Both Carbon Voice and Carbon Voice Trigger appear in the node picker.
Community nodes need to be enabled for your Cloud account. See the n8n docs for the current process.
This node authenticates with a Personal Access Token (PAT).
- Sign in at carbonvoice.app.
- Open the Developer Portal → Personal Access Tokens.
- Click New token, give it a name (e.g.
n8n), and copy the value. The token is shown once — copy it before closing the dialog. - In n8n: Credentials → New → Carbon Voice API → paste the token → Save.
The credential test will hit /whoami immediately so you'll know it worked.
The same credential is used by both the action node and the trigger node.
Example: relay every new Carbon Voice voice memo into Slack
- Drop a
Carbon Voice Triggernode. - Pick the credential you just created.
- Event: New Voice Memo Posted. Optionally pick a workspace / folder to filter.
- Save → Publish the workflow.
- Connect a Slack node next to it that posts the
transcript_txtfield to a channel.
Whenever someone records a new voice memo in the chosen workspace, the workflow runs.
n8n's Test this trigger button works end-to-end with Carbon Voice — clicking it registers a short-lived subscription, waits for the next matching event, and shows you the raw payload.
For workflows that should run continuously (not just for testing), use Publish instead — that registers a persistent subscription that survives n8n restarts.
- Workspace filter on triggers is optional. If you leave it blank, the trigger fires for events across every workspace your user has access to.
- Send Direct Message accepts either user IDs (from the dropdown) or comma-separated emails. Use emails for recipients who aren't yet in your contacts.
- Create Voice Memo has two source modes: type the text and the server reads it aloud, or hand it a binary property from a previous node (e.g. a
Read Binary Fileor an upstream HTTP download) and the audio is uploaded directly. - Create Share Link defaults to public. Pick Specified if you want to limit access to certain users, workspaces, or conversations.
"The credential is incorrect" when saving The PAT may have been revoked or copied incorrectly. Generate a new one in the developer portal.
Trigger activates but no events arrive Open the n8n executions tab — the trigger may have fired but the workflow had an error downstream. Also double-check that messages are being sent from a different Carbon Voice user; the New Message Received event filters out events whose creator matches the authenticated user (no self-loops).
Bad request - please check your parameters when activating a trigger
Almost always a filter shape mismatch. Open an issue with the request body so we can adjust the filter schema — Carbon Voice validates filter keys + operator combinations strictly.
Webhook arrives in ngrok but n8n shows no execution Make sure the workflow is Published (not just saved). Test-mode subscriptions expire after the first matching event.
This package follows Semantic Versioning. Breaking changes bump the major.
Issues and PRs welcome: github.com/PhononX/cv-n8n-node.
MIT © Carbon Voice