LinkedIn API keys are throttled by default. The throttles are designed to ensure maximum performance for all developers and to protect the user experience of all users on LinkedIn.
User throttles: These throttles limit the
number of calls for any individual user of your application. User-level
throttles serve several purposes, but in general are implemented where
there is a significant
potential impact to the user experience for LinkedIn users.
These limits are reset Daily at midnight UTC.
User's own data
Post Shares Allows user to share content to their connections on LinkedIn Per Day: 25
Post Network Updates Creates a network update appearing to all connections Per Day: 5
Send Message Sends a message to up to 10 connections Per Day: 10
Send Invitation Invites people to connect Per Day: 100
Get My Groups List of groups a member belongs to, has requested to join, is an admin for Per Day: 300
Join Group Request to join a group Per Day: 10
Create Post Create a new post Per Day: 100
Comment, Like, Follow a Post Per Day: 300
Post Company Updates Post an update to any company page on LinkedIn Per Day: 20