Linkedin

LinkedIn

Access the LinkedIn API with managed OAuth authentication. Share posts, manage advertising campaigns, retrieve profile and organization information, upload media, and access the Ad Library.

Quick Start

# Get current user profile
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://gateway.maton.ai/linkedin/rest/me')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('LinkedIn-Version', '202506')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Base URL

https://gateway.maton.ai/linkedin/rest/{resource}

The gateway proxies requests to api.linkedin.com and automatically injects your OAuth token.

Authentication

All requests require the Maton API key in the Authorization header:

Authorization: Bearer $MATON_API_KEY

Environment Variable: Set your API key as MATON_API_KEY:

export MATON_API_KEY="YOUR_API_KEY"

Getting Your API Key

1. Sign in or create an account at maton.ai
2. Go to maton.ai/settings
3. Copy your API key

Required Headers

LinkedIn REST API requires the version header:

LinkedIn-Version: 202506

Connection Management

Manage your LinkedIn OAuth connections at https://ctrl.maton.ai.

List Connections

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections?app=linkedin&status=ACTIVE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Create Connection

python <<'EOF'
import urllib.request, os, json
data = json.dumps({'app': 'linkedin'}).encode()
req = urllib.request.Request('https://ctrl.maton.ai/connections', data=data, method='POST')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Content-Type', 'application/json')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Get Connection

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections/{connection_id}')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Response:

{
  "connection": {
    "connection_id": "ba10eb9e-b590-4e95-8c2e-3901ff94642a",
    "status": "ACTIVE",
    "creation_time": "2026-02-07T08:00:24.372659Z",
    "last_updated_time": "2026-02-07T08:05:16.609085Z",
    "url": "https://connect.maton.ai/?session_token=...",
    "app": "linkedin",
    "metadata": {}
  }
}

Open the returned url in a browser to complete OAuth authorization.

Delete Connection

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections/{connection_id}', method='DELETE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Specifying Connection

If you have multiple LinkedIn connections, specify which one to use with the Maton-Connection header:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://gateway.maton.ai/linkedin/rest/me')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('LinkedIn-Version', '202506')
req.add_header('Maton-Connection', 'ba10eb9e-b590-4e95-8c2e-3901ff94642a')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

If omitted, the gateway uses the default (oldest) active connection.

API Reference

Profile

Get Current User Profile

GET /linkedin/rest/me
LinkedIn-Version: 202506

Example:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://gateway.maton.ai/linkedin/rest/me')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('LinkedIn-Version', '202506')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Response:

{
  "firstName": {
    "localized": {"en_US": "John"},
    "preferredLocale": {"country": "US", "language": "en"}
  },
  "localizedFirstName": "John",
  "lastName": {
    "localized": {"en_US": "Doe"},
    "preferredLocale": {"country": "US", "language": "en"}
  },
  "localizedLastName": "Doe",
  "id": "yrZCpj2Z12",
  "vanityName": "johndoe",
  "localizedHeadline": "Software Engineer at Example Corp",
  "profilePicture": {
    "displayImage": "urn:li:digitalmediaAsset:C4D00AAAAbBCDEFGhiJ"
  }
}

Sharing Posts

Create a Text Post

POST /linkedin/rest/posts
Content-Type: application/json
LinkedIn-Version: 202506

{
  "author": "urn:li:person:{personId}",
  "lifecycleState": "PUBLISHED",
  "visibility": "PUBLIC",
  "commentary": "Hello LinkedIn! This is my first API post.",
  "distribution": {
    "feedDistribution": "MAIN_FEED"
  }
}

Response: 201 Created with x-restli-id header containing the post URN.

Create an Article/URL Share

POST /linkedin/rest/posts
Content-Type: application/json
LinkedIn-Version: 202506

{
  "author": "urn:li:person:{personId}",
  "lifecycleState": "PUBLISHED",
  "visibility": "PUBLIC",
  "commentary": "Check out this great article!",
  "distribution": {
    "feedDistribution": "MAIN_FEED"
  },
  "content": {
    "article": {
      "source": "https://example.com/article",
      "title": "Article Title",
      "description": "Article description here"
    }
  }
}

Create an Image Post

First, initialize the image upload, then upload the image, then create the post.

Step 1: Initialize Image Upload

POST /linkedin/rest/images?action=initializeUpload
Content-Type: application/json
LinkedIn-Version: 202506

{
  "initializeUploadRequest": {
    "owner": "urn:li:person:{personId}"
  }
}

Response:

{
  "value": {
    "uploadUrlExpiresAt": 1770541529250,
    "uploadUrl": "https://www.linkedin.com/dms-uploads/...",
    "image": "urn:li:image:D4D10AQH4GJAjaFCkHQ"
  }
}

Step 2: Upload Image Binary

PUT {uploadUrl from step 1}
Content-Type: image/png

{binary image data}

Step 3: Create Image Post

POST /linkedin/rest/posts
Content-Type: application/json
LinkedIn-Version: 202506

{
  "author": "urn:li:person:{personId}",
  "lifecycleState": "PUBLISHED",
  "visibility": "PUBLIC",
  "commentary": "Check out this image!",
  "distribution": {
    "feedDistribution": "MAIN_FEED"
  },
  "content": {
    "media": {
      "id": "urn:li:image:D4D10AQH4GJAjaFCkHQ",
      "title": "Image Title"
    }
  }
}

Visibility Options

Share Media Categories

Ad Library (Public Data)

The Ad Library API provides access to public advertising data on LinkedIn. These endpoints use the REST API with version headers.

Required Headers for Ad Library

LinkedIn-Version: 202506

Search Ads

GET /linkedin/rest/adLibrary?q=criteria&keyword={keyword}

Query parameters:

• keyword (string): Search ad content (multiple keywords use AND logic)
• advertiser (string): Search by advertiser name
• countries (array): Filter by ISO 3166-1 alpha-2 country codes
• dateRange (object): Filter by served dates
• start (integer): Pagination offset
• count (integer): Results per page (max 25)

Example - Search ads by keyword:

GET /linkedin/rest/adLibrary?q=criteria&keyword=linkedin

Example - Search ads by advertiser:

GET /linkedin/rest/adLibrary?q=criteria&advertiser=microsoft

Response:

{
  "paging": {
    "start": 0,
    "count": 10,
    "total": 11619543,
    "links": [...]
  },
  "elements": [
    {
      "adUrl": "https://www.linkedin.com/ad-library/detail/...",
      "details": {
        "advertiser": {...},
        "adType": "TEXT_AD",
        "targeting": {...},
        "statistics": {
          "firstImpressionDate": 1704067200000,
          "latestImpressionDate": 1706745600000,
          "impressionsFrom": 1000,
          "impressionsTo": 5000
        }
      },
      "isRestricted": false
    }
  ]
}

Search Job Postings

GET /linkedin/rest/jobLibrary?q=criteria&keyword={keyword}

Note: Job Library requires version 202506.

Query parameters:

• keyword (string): Search job content
• organization (string): Filter by company name
• countries (array): Filter by country codes
• dateRange (object): Filter by posting dates
• start (integer): Pagination offset
• count (integer): Results per page (max 24)

Example:

GET /linkedin/rest/jobLibrary?q=criteria&keyword=software&organization=google

Response includes:

• jobPostingUrl: Link to job listing
• jobDetails: Title, location, description, salary, benefits
• statistics: Impression data

Marketing API (Advertising)

The Marketing API provides access to LinkedIn's advertising platform. These endpoints use the versioned REST API.

Required Headers for Marketing API

LinkedIn-Version: 202506

List Ad Accounts

GET /linkedin/rest/adAccounts?q=search

Returns all ad accounts accessible by the authenticated user.

Response:

{
  "paging": {
    "start": 0,
    "count": 10,
    "links": []
  },
  "elements": [
    {
      "id": 123456789,
      "name": "My Ad Account",
      "status": "ACTIVE",
      "type": "BUSINESS",
      "currency": "USD",
      "reference": "urn:li:organization:12345"
    }
  ]
}

Get Ad Account

GET /linkedin/rest/adAccounts/{adAccountId}

Create Ad Account

POST /linkedin/rest/adAccounts
Content-Type: application/json

{
  "name": "New Ad Account",
  "currency": "USD",
  "reference": "urn:li:organization:{orgId}",
  "type": "BUSINESS"
}

Update Ad Account

POST /linkedin/rest/adAccounts/{adAccountId}
Content-Type: application/json
X-RestLi-Method: PARTIAL_UPDATE

{
  "patch": {
    "$set": {
      "name": "Updated Account Name"
    }
  }
}

List Campaign Groups

Campaign groups are nested under ad accounts:

GET /linkedin/rest/adAccounts/{adAccountId}/adCampaignGroups

Create Campaign Group

POST /linkedin/rest/adAccounts/{adAccountId}/adCampaignGroups
Content-Type: application/json

{
  "name": "Q1 2026 Campaigns",
  "status": "DRAFT",
  "runSchedule": {
    "start": 1704067200000,
    "end": 1711929600000
  },
  "totalBudget": {
    "amount": "10000",
    "currencyCode": "USD"
  }
}

Get Campaign Group

GET /linkedin/rest/adAccounts/{adAccountId}/adCampaignGroups/{campaignGroupId}

Update Campaign Group

POST /linkedin/rest/adAccounts/{adAccountId}/adCampaignGroups/{campaignGroupId}
Content-Type: application/json
X-RestLi-Method: PARTIAL_UPDATE

{
  "patch": {
    "$set": {
      "status": "ACTIVE"
    }
  }
}

Delete Campaign Group

DELETE /linkedin/rest/adAccounts/{adAccountId}/adCampaignGroups/{campaignGroupId}

List Campaigns

Campaigns are also nested under ad accounts:

GET /linkedin/rest/adAccounts/{adAccountId}/adCampaigns

Create Campaign

POST /linkedin/rest/adAccounts/{adAccountId}/adCampaigns
Content-Type: application/json

{
  "campaignGroup": "urn:li:sponsoredCampaignGroup:123456",
  "name": "Brand Awareness Campaign",
  "status": "DRAFT",
  "type": "SPONSORED_UPDATES",
  "objectiveType": "BRAND_AWARENESS",
  "dailyBudget": {
    "amount": "100",
    "currencyCode": "USD"
  },
  "costType": "CPM",
  "unitCost": {
    "amount": "5",
    "currencyCode": "USD"
  },
  "locale": {
    "country": "US",
    "language": "en"
  }
}

Get Campaign

GET /linkedin/rest/adAccounts/{adAccountId}/adCampaigns/{campaignId}

Update Campaign

POST /linkedin/rest/adAccounts/{adAccountId}/adCampaigns/{campaignId}
Content-Type: application/json
X-RestLi-Method: PARTIAL_UPDATE

{
  "patch": {
    "$set": {
      "status": "ACTIVE"
    }
  }
}

Delete Campaign

DELETE /linkedin/rest/adAccounts/{adAccountId}/adCampaigns/{campaignId}

Campaign Status Values

Campaign Objective Types

Organizations

List Organization ACLs

Get organizations the authenticated user has access to:

GET /linkedin/rest/organizationAcls?q=roleAssignee
LinkedIn-Version: 202506

Response:

{
  "paging": {
    "start": 0,
    "count": 10,
    "total": 2
  },
  "elements": [
    {
      "role": "ADMINISTRATOR",
      "organization": "urn:li:organization:12345",
      "state": "APPROVED"
    }
  ]
}

Get Organization

GET /linkedin/rest/organizations/{organizationId}
LinkedIn-Version: 202506

Lookup Organization by Vanity Name

GET /linkedin/rest/organizations?q=vanityName&vanityName={vanityName}

Example:

GET /linkedin/rest/organizations?q=vanityName&vanityName=microsoft

Response:

{
  "elements": [
    {
      "vanityName": "microsoft",
      "localizedName": "Microsoft",
      "website": {
        "localized": {"en_US": "https://news.microsoft.com/"}
      }
    }
  ]
}

Get Organization Share Statistics

GET /linkedin/rest/organizationalEntityShareStatistics?q=organizationalEntity&organizationalEntity={orgUrn}

Example:

GET /linkedin/rest/organizationalEntityShareStatistics?q=organizationalEntity&organizationalEntity=urn:li:organization:12345

Get Organization Posts

GET /linkedin/rest/posts?q=author&author={orgUrn}

Example:

GET /linkedin/rest/posts?q=author&author=urn:li:organization:12345

Media Upload (REST API)

The REST API provides modern media upload endpoints. All require version header LinkedIn-Version: 202506.

Initialize Image Upload

POST /linkedin/rest/images?action=initializeUpload
Content-Type: application/json
LinkedIn-Version: 202506

{
  "initializeUploadRequest": {
    "owner": "urn:li:person:{personId}"
  }
}

Response:

{
  "value": {
    "uploadUrlExpiresAt": 1770541529250,
    "uploadUrl": "https://www.linkedin.com/dms-uploads/...",
    "image": "urn:li:image:D4D10AQH4GJAjaFCkHQ"
  }
}

Use the uploadUrl to PUT your image binary, then use the image URN in your post.

Initialize Video Upload

POST /linkedin/rest/videos?action=initializeUpload
Content-Type: application/json
LinkedIn-Version: 202506

{
  "initializeUploadRequest": {
    "owner": "urn:li:person:{personId}",
    "fileSizeBytes": 10000000,
    "uploadCaptions": false,
    "uploadThumbnail": false
  }
}

Response:

{
  "value": {
    "uploadUrlsExpireAt": 1770541530110,
    "video": "urn:li:video:D4D10AQE_p-P_odQhXQ",
    "uploadInstructions": [
      {"uploadUrl": "https://www.linkedin.com/dms-uploads/..."}
    ]
  }
}

Initialize Document Upload

POST /linkedin/rest/documents?action=initializeUpload
Content-Type: application/json
LinkedIn-Version: 202506

{
  "initializeUploadRequest": {
    "owner": "urn:li:person:{personId}"
  }
}

Response:

{
  "value": {
    "uploadUrlExpiresAt": 1770541530896,
    "uploadUrl": "https://www.linkedin.com/dms-uploads/...",
    "document": "urn:li:document:D4D10AQHr-e30QZCAjQ"
  }
}

Ad Targeting

Get Available Targeting Facets

GET /linkedin/rest/adTargetingFacets

Returns all available targeting facets for ad campaigns (31 facets including employers, degrees, skills, locations, industries, etc.).

Response:

{
  "elements": [
    {
      "facetName": "skills",
      "adTargetingFacetUrn": "urn:li:adTargetingFacet:skills",
      "entityTypes": ["SKILL"],
      "availableEntityFinders": ["AD_TARGETING_FACET", "TYPEAHEAD"]
    },
    {
      "facetName": "industries",
      "adTargetingFacetUrn": "urn:li:adTargetingFacet:industries"
    }
  ]
}

Available targeting facets include:

• skills - Member skills
• industries - Industry categories
• titles - Job titles
• seniorities - Seniority levels
• degrees - Educational degrees
• schools - Educational institutions
• employers / employersPast - Current/past employers
• locations / geoLocations - Geographic targeting
• companySize - Company size ranges
• genders - Gender targeting
• ageRanges - Age range targeting

Getting Your Person ID

To create posts, you need your LinkedIn person ID. Get it from the /rest/me endpoint:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://gateway.maton.ai/linkedin/rest/me')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('LinkedIn-Version', '202506')
result = json.load(urllib.request.urlopen(req))
print(f"Your person URN: urn:li:person:{result['id']}")
EOF

Code Examples

JavaScript - Create Text Post

const personId = 'YOUR_PERSON_ID';

const response = await fetch(
  'https://gateway.maton.ai/linkedin/rest/posts',
  {
    method: 'POST',
    headers: {
      'Authorization': `Bearer ${process.env.MATON_API_KEY}`,
      'Content-Type': 'application/json',
      'LinkedIn-Version': '202506'
    },
    body: JSON.stringify({
      author: `urn:li:person:${personId}`,
      lifecycleState: 'PUBLISHED',
      visibility: 'PUBLIC',
      commentary: 'Hello from the API!',
      distribution: {
        feedDistribution: 'MAIN_FEED'
      }
    })
  }
);

Python - Create Text Post

import os
import requests

person_id = 'YOUR_PERSON_ID'

response = requests.post(
    'https://gateway.maton.ai/linkedin/rest/posts',
    headers={
        'Authorization': f'Bearer {os.environ["MATON_API_KEY"]}',
        'Content-Type': 'application/json',
        'LinkedIn-Version': '202506'
    },
    json={
        'author': f'urn:li:person:{person_id}',
        'lifecycleState': 'PUBLISHED',
        'visibility': 'PUBLIC',
        'commentary': 'Hello from the API!',
        'distribution': {
            'feedDistribution': 'MAIN_FEED'
        }
    }
)

Rate Limits

Notes

• Person IDs are unique per application and not transferable across apps
• The author field must use URN format: urn:li:person:{personId}
• All posts require lifecycleState: "PUBLISHED"
• Image/video uploads are a 3-step process: initialize upload, upload binary, create post
• Include LinkedIn-Version: 202506 header for all REST API calls
• Profile picture URLs may expire; re-fetch if needed
• IMPORTANT: When using curl commands, use curl -g when URLs contain brackets to disable glob parsing
• IMPORTANT: When piping curl output to jq or other commands, environment variables like $MATON_API_KEY may not expand correctly in some shell environments

Error Handling

Error Response Format

{
  "status": 403,
  "serviceErrorCode": 100,
  "code": "ACCESS_DENIED",
  "message": "Not enough permissions to access resource"
}

Troubleshooting: API Key Issues

1. Check that the MATON_API_KEY environment variable is set:

echo $MATON_API_KEY

2. Verify the API key is valid by listing connections:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Troubleshooting: Invalid App Name

1. Ensure your URL path starts with linkedin. For example:

• Correct: https://gateway.maton.ai/linkedin/rest/me
• Incorrect: https://gateway.maton.ai/rest/me

OAuth Scopes

Resources

• LinkedIn API Overview
• Share on LinkedIn Guide
• Profile API
• Sign In with LinkedIn
• Authentication Guide
• Marketing API
• Ad Accounts
• Campaign Management
• Ad Library API
• Maton Community
• Maton Support