What Is LinkedIn API?

The LinkedIn API is an officially supported set of endpoints that lets approved apps read or write selected LinkedIn data (e.g., ads, leads, Pages/content; limited profile edits exist for select partners only) once a member or Page admin grants permission.

It's how approved partners and developers integrate external software with LinkedIn.

Recruiters

• Sync candidate data between LinkedIn Recruiter and your ATS (often near real-time, varies by ATS).
• Publish job posts programmatically and capture applies for reporting.
• Learn more about safe and approved ways to automate recruiting and avoid policy violations in our LinkedIn Scraper Guide: Tools, Methods & Best Practices.

Marketers

• Send offline or CRM conversions through the LinkedIn Conversions API for cleaner attribution.
• Pipe Lead Gen Form submissions straight into marketing automation so reps respond faster.

Business platforms

• Let users sign up with “Sign-In with LinkedIn” and pre-fill trusted profile fields.
• Display certifications on member profiles via LinkedIn's "Add to Profile" button/flow.

How Does LinkedIn API Work?

1. Create an app in the LinkedIn Developer Portal and associate it with a LinkedIn Page; a Page super admin must verify the app.
2. Request product access: Marketing, Talent, or Data Portability. Only approved scopes are allowed; scraping is prohibited.
3. Authenticate users via OAuth 2.0 so they can grant granular LinkedIn API access to your app.
4. Call the needed endpoints, e.g. /rest/adAnalytics for ad stats or /rest/leadFormResponses for lead delivery. Regulated portability endpoints sit under the Portability APIs (Member and Pages Portability).
5. Monitor rate limits; abuse or privacy violations can get keys revoked.

Best Practices

• Apply only for scopes you really need: excess permissions slow approval.
• Store and refresh tokens securely; never hard-code secrets.
• Batch reads where possible; HTTP 429 means you have hit a rate cap.
• Combine the Insight Tag with the Conversions API to de-duplicate events (use eventId and create separate conversion rules per data source).
• Delete or anonymize personal data when LinkedIn's terms require it.

Bonus Tips

• Download the official Postman collection for quick endpoint tests.
• Start with a simple LinkedIn API integration such as Lead Sync, then expand.
• Subscribe to the LinkedIn API Status page for outages/incidents, and follow LinkedIn Developers News for deprecations.