n8n Community Node: Facebook Page Comments

Manage Facebook Page comments via the Graph API: list page comments, list replies, and reply inline with tagging and image attachments.

Features

• List Page comments with pagination and fields
• Reply to a comment with text
• Tag entities via message_tags (advanced)
• Attach image by URL or by binary upload (unpublished photo -> attachment_id)
• List replies to a comment
• Load Options to select one of your managed Pages
• Dynamic or static Page ID with fallback to credential default
• Credential test via GET /me

Install

• In n8n, go to Settings > Community Nodes > Install and search for "n8n-nodes-facebook-comments".
• Or install via env var N8N_COMMUNITY_PACKAGES or by running npm install n8n-nodes-facebook-comments in your n8n directory.

Requirements

• Node.js 18+
• n8n 1.0+
• Facebook App with proper permissions:
  • pages_read_engagement
  • pages_manage_engagement
  • pages_manage_posts (for uploading photos)
  • pages_show_list (to list Pages)
  • pages_read_user_content (optional for breadth)
• A Page access token for posting replies. A user token may pass the credential test, but replies require a Page token.

Credentials

Getting Started

Need help getting an access token? See the detailed Facebook Authentication Guide.

Quick Setup

• Access Token: Page access token (not user token). Long-lived tokens recommended.
• Default Page ID: Optional fallback used when node field is not provided.
• API Version: Select Graph API version (v19.0–v24.0).

OAuth2 Alternative

You can also use OAuth2 authentication for automatic token management.

Operations

Read Operations

• List Page Comments (GET /{page-id}/comments)
  • Return All or Limit
  • Fields: comma-separated list (e.g. id,from,message,created_time,permalink_url,attachment,comment_count,like_count)
  • Include All Replies: Optionally fetch all replies for each comment
  • Date Filtering: Filter by Since/Until dates
• List Replies to a Comment (GET /{comment-id}/comments)
  • Return All or Limit
  • Fields: similar to above

Write Operations

• Reply to Comment (POST /{comment-id}/comments)

  • Message (required)
  • Additional Fields
    • Attachment URL: public image URL
    • Binary Property: upload from incoming binary data, unpublished to /{page-id}/photos, then uses attachment_id
    • Message Tags (JSON): advanced tagging array

• Edit Comment (POST /{comment-id})

  • Update message text
  • Update attachment URL
  • Update message tags

• Delete Comment (DELETE /{comment-id})

  • Permanently delete a comment or reply

Moderation Operations

• Hide Comment (POST /{comment-id})
  • Hide a comment from public view
• Unhide Comment (POST /{comment-id})
  • Make a hidden comment visible again

Engagement Operations

• Like Comment (POST /{comment-id}/likes)
  • Like a comment as the Page
• Unlike Comment (DELETE /{comment-id}/likes)
  • Remove a like from a comment

Usage

1. Add the Facebook Comments node.
2. Choose an Operation.
3. For listing page comments, provide Page ID manually, select from your Pages, or rely on Default Page ID in credentials.
4. For replies with binary image, a Page ID is required (for the photo upload step).
5. Map your token/fields and run the node.

Tagging

• Provide "Message Tags (JSON)" as a JSON array. Example: [{"id":"<OBJECT_ID>","offset":0,"length":4,"type":"user"}]
• Facebook validates whether IDs and types are taggable in the given context.

Attachments

• attachment_url: Provide a public HTTPS image URL.
• Binary Property: Pass binary from previous nodes. The node will upload an unpublished photo to /{page-id}/photos and use attachment_id in the reply.

Pagination

• The node follows paging.next until the requested amount is collected or Return All is satisfied.

API Versions

• You can choose versions v19.0–v24.0 via credentials. The base URL is https://graph.facebook.com/{version}.

Troubleshooting

• 400/403 when replying: ensure you are using a Page access token and the app has the required permissions approved in App Review.
• Image upload fails: verify pages_manage_posts permission and that the binary property contains an image.
• Listing Pages empty: ensure pages_show_list permission and the user has access to the Page.

Development

• Clone this repo, then:

  npm install
  npm run build
  npm test

• Node classes:
  • src/credentials/FacebookGraphApi.credentials.ts
  • src/credentials/FacebookGraphOAuth2Api.credentials.ts
  • src/nodes/FacebookComments.node.ts

Testing

• Run tests: npm test
• Watch mode: npm test:watch
• Coverage: npm test:coverage

Contributing

See CONTRIBUTING.md for guidelines on how to contribute to this project.

License

MIT