Add Comments to Notion Pages Using Webhooks
Send a webhook to Notis and it adds a comment to a Notion page, creating discussions and flagging changes. Connect any external system to Notion's discussion threads.
Trigger
Webhook received
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Action
Create comment
Adds a comment to a notion page (via `parent page id`) or to an existing discussion thread (via `discussion id`); cannot create new discussion threads on specific blocks (inline comments).
Why this helps
Relevant data or decisions happen in external systems, but your team discusses them on Notion pages. You manually copy information between tools or conversations happen in silos.
- External systems can participate in Notion discussions without leaving their ecosystem
- Comments surface relevant external data and decisions in context on Notion pages
- Reduces context switching between tools and keeps team aligned
- Enables complex automation: trigger actions in one system, comment on Notion to flag
Setup
Build it in a few focused steps.
- 1Connect Notion to Notis.
- 2Create an automation with the prompt: 'When a webhook receives a comment, add it to the specified Notion page as a discussion comment'.
- 3Select 'Notis Webhook' as the trigger and note the webhook URL.
- 4Configure your external system to send POST requests to that webhook with the page ID and comment text.
- 5Test by sending a sample comment webhook and verify it appears as a Notion discussion thread.
Questions about this workflow
Can I include the sender's name or system in the comment?
Yes. Specify that in your automation prompt: e.g., 'include the sender and system name in the comment so it's clear where the comment came from'.
Can the webhook comment tag or mention people?
Yes. Include mentions in the webhook payload and Notis will add them to the comment.
What if the webhook comment contains sensitive data?
Webhooks transmit over HTTPS. If comments are sensitive, ensure the external system has appropriate access controls and Notion pages are protected.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Airtable to Notion. A trigger fires from one place; an action lands in another.
Airtable triggers
Notion actions
Base Metadata Changed
Triggers when an existing Airtable base changes its name or permission level.
Add multiple content blocks (bulk, user-friendly)
Efficiently adds multiple standard content blocks to a notion page in a single api call with automatic markdown parsing. the 'content' field in notionrichtext blocks now automatically detects and parses markdown formatting including headers (# ## ###), bold (**text**), italic (*text*), strikethrough (~~text~~), inline code (`code`), links ([text](url)), and more. ideal for bulk content creation, ai agents, and replacing multiple individual add page content calls. supports automatic text formatting, content splitting, and up to 100 blocks per request.
Base Schema Changed
Triggers when tables, fields, or views change in an Airtable base.
Add content to Notion page
Deprecated: appends a single content block to a notion page or a parent block (must be page, toggle, to-do, bulleted/numbered list, callout, or quote); invoke repeatedly to add multiple blocks.
User Profile Changed
Triggers when the connected Airtable user's profile information changes.
Append complex blocks (advanced, full control)
Appends complex blocks with full notion block structure to a parent block or page. use for advanced scenarios requiring precise control: code blocks, tables, embeds, nested children within blocks, or when working with pre-built notion block objects. requires full notion api block schema - use add multiple page content for simpler content creation.
View Created
Triggers when a new view is created in an Airtable base.
Archive Notion Page
Archives (moves to trash) or unarchives (restores from trash) a specified notion page.
View Deleted
Triggers when a previously known Airtable view is deleted.
Create comment
Adds a comment to a notion page (via `parent page id`) or to an existing discussion thread (via `discussion id`); cannot create new discussion threads on specific blocks (inline comments).
View Metadata Changed
Triggers when an Airtable view changes its name or type.
Create Notion Database
Creates a new notion database as a subpage under a specified parent page with a defined properties schema; use this action exclusively for creating new databases.
Create Notion page
Creates a new empty page in a notion workspace.
Delete a block
Archives a notion block, page, or database using its id, which sets its 'archived' property to true (like moving to "trash" in the ui) and allows it to be restored later.
Connect any two apps with Notis in the middle.
Not just Airtable and Notion. Any combination from 985+ integrations.
When this happens · Trigger
Do this · Action
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