Chatter REST API Developer Guide

Introducing Chatter REST API
Chatter REST API Quick Start
Chatter REST API Features
Chatter REST API Examples
Filter a Response Body
Make a Request in a Community
Get My News Feed
Get Another User’s Feed
Get a Group Feed
Post a Feed Item
Post a Feed Element and Include Files from Salesforce
Post a Rich-Text Feed Element
Post a Feed Element with a Code Block
Post a Feed Element with an Inline Image
Post a Comment
Post a Comment and Include a File from Salesforce
Post a Rich-Text Comment
Post a Comment with a Code Block
Post a Comment with an Inline Image
Post a Binary File
Post an @Mention
Post Multiple @Mentions
Get a List of @Mention Proposals
Define Action Links and Post with a Feed Element
Define Action Links in a Template and Post with a Feed Element
Update the Status of an Action Link or Invoke an Action Link
Edit a Feed Post
Edit a Comment
Edit a Question Title and Post
Like a Feed Item
Like a Feed Item and Return the Total Number of Likes
Share a Feed Item
Get Feed Elements Updated Since Last Request
Get a Feed with Internal Feed Items Only
Search a Feed
Get a List of Records a User Follows
Get Chatter Activity Statistics for a User
Get Recommendations of Users to Follow
Create and Schedule Custom Recommendations with Audiences
Create a Group
Update and Crop a Group Photo
Join a Group
Request to Join a Private Group
Approve or Reject a Request to Join a Private Group
Post to a Group
Follow a Record
Stop Following a Record
Get a Record Feed
Update a User Profile
Update and Crop a User Photo
Send a Private Message
Get User Information for Multiple Users
Create a Topic Hierarchy in Communities
Chatter REST API Resources
Chatter REST API Request Bodies
Chatter REST API Response Bodies
Chatter REST API Appendices
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Get Feed Elements Updated Since Last Request

Resource
To get feed elements that were updated since the last call to a feeds resource, make a request to the value of the updatesUrl property of the Feed Element Page response body. Feed elements that are updated in the same second as the request aren’t returned.
These feeds return an updatesUrl property:
This excerpt from the Feed Elements Page response body shows a sample value for the updatesUrl property:
1{
2...
3..."updatesUrl" : "/services/data/v38.0/chatter/feeds
4   /news/005D0000001LL8OIAW/feed-elements?updatedSince=2:1384811809000"
5...
6}

A feed element is considered to be updated if it was created since the last feed request, or if sort=LastModifiedDateDesc and a comment was added to the feed element since the last feed request. Adding likes and topics doesn’t update a feed element.

HTTP method
GET
Returns
Feed Element Page