Instagram — comment/create

Own media only: You can only post comments on media objects owned by your Instagram Business account. This operation cannot post comments on other users' media.

When to Use

Auto-reply to post questions: When a post is published, post an automated first comment with a FAQ link or call-to-action, e.g. "Check the link in bio for details!"
Hashtag seeding: Post a second comment immediately after publishing to add additional hashtags — keeping the caption clean while maximising discoverability.
Campaign announcements: When a countdown ends or a prize winner is selected, post an announcement comment on the original post.
Feedback acknowledgement: When a high-sentiment comment is detected, post a branded acknowledgement comment (e.g. "Thanks for the kind words!") on the post to boost engagement signals.
Product launch coordination: Coordinate cross-promotion by posting coordinated comments on simultaneous posts across multiple accounts at launch time.

Configuration

Connection

Field	Required	Description
`accessToken`	Required	Long-lived Instagram access token stored in BizFirst Credentials Manager.
`igUserId`	Required	Your Instagram Business/Creator account ID.

Operation

Field	Required	Description
`resource`	Required	Must be `comments`.
`operation`	Required	Must be `create`.
`mediaId`	Required	ID of the Instagram media object on which to post the comment.
`message`	Required	Comment text. Supports @mentions and emoji. Instagram may reject comments that violate community guidelines.

Sample Configuration JSON

{
  "resource": "comments",
  "operation": "create",
  "accessToken": "{{ $credential.instagram.accessToken }}",
  "igUserId": "17841400000000000",
  "mediaId": "{{ $output.publishNode.instagram.mediaId }}",
  "message": "Shop the full collection at the link in bio! #newcollection #fashion"
}

Validation Errors

Error	Cause
`accessToken is required`	`accessToken` field is missing or empty.
`mediaId is required`	`mediaId` field is missing or empty.
`message is required`	`message` field is missing or empty.
Graph API error 368	Comment text violates Instagram community guidelines.
Graph API error 100	Media ID does not exist or is not owned by this account.

Output

Success Port

Field	Type	Description
`status`	string	`"success"`
`commentId`	string	ID of the newly created comment. Use for subsequent moderation operations.
`payload`	string	Raw JSON response from the Graph API.

Error Port

Field	Type	Description
`status`	string	`"error"`
`errorCode`	string	Graph API error code.
`errorMessage`	string	Error description.
`payload`	string	Raw error response.

Sample Output JSON

{
  "status": "success",
  "commentId": "17858893270000001",
  "payload": "{\"id\":\"17858893270000001\"}"
}

Expression Reference

Expression	Value
`{{ $output.instagram.commentId }}`	New comment ID for subsequent operations

Node Policies & GuardRails

Content policy: Instagram enforces community guidelines on comment text. Automated comments that repeatedly use certain words, include spam patterns, or mimic policy violations may result in the account being flagged. Review automated comment templates carefully.
Anti-spam: Do not use this node to post identical comments on multiple posts in rapid succession — Instagram's spam detection will flag and suppress the comments. Introduce variation and time spacing.
Comment disabling: If commenting is disabled on the target media (via comments/disable), the operation will fail with a Graph API error. Handle the error port to detect this state.
Rate limit: 200 calls per user per hour. Factor comment creation into your overall call budget.

Examples

First comment after publish — CTA with hashtags

{
  "resource": "comments",
  "operation": "create",
  "accessToken": "{{ $credential.instagram.accessToken }}",
  "igUserId": "17841400000000000",
  "mediaId": "{{ $output.mediaPublish.instagram.mediaId }}",
  "message": "Shop now at the link in bio! Use code SUMMER20 for 20% off. #sale #limitedtime"
}

Runs immediately after media/publish in the same workflow. Posts the promotional first comment with coupon code and hashtags while keeping the caption clean.

AI-generated announcement comment

{
  "resource": "comments",
  "operation": "create",
  "accessToken": "{{ $credential.instagram.accessToken }}",
  "igUserId": "{{ $env.IG_USER_ID }}",
  "mediaId": "{{ $input.giveawayPostId }}",
  "message": "Congratulations to @{{ $output.winnerSelection.username }} — you've won! Please DM us to claim your prize."
}

Posts the winner announcement comment on the original giveaway post. The username is dynamically populated from the winner selection node's output.