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

| Value | Description |

|-------|-------------|

| PUBLIC | Viewable by anyone on LinkedIn |

| CONNECTIONS | Viewable by 1st-degree connections only |

Share Media Categories

| Value | Description |

|-------|-------------|

| NONE | Text-only post |

| ARTICLE | URL/article share |

| IMAGE | Image post |

| VIDEO | Video post |

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

| Status | Description |

|--------|-------------|

| DRAFT | Campaign is in draft mode |

| ACTIVE | Campaign is running |

| PAUSED | Campaign is paused |

| ARCHIVED | Campaign is archived |

| COMPLETED | Campaign has ended |

| CANCELED | Campaign was canceled |

Campaign Objective Types

| Objective | Description |

|-----------|-------------|

| BRAND_AWARENESS | Increase brand visibility |

| WEBSITE_VISITS | Drive traffic to website |

| ENGAGEMENT | Increase post engagement |

| VIDEO_VIEWS | Maximize video views |

| LEAD_GENERATION | Collect leads via Lead Gen Forms |

| WEBSITE_CONVERSIONS | Drive website conversions |

| JOB_APPLICANTS | Attract job applications |

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

| Throttle Type | Daily Limit (UTC) |

|---------------|-------------------|

| Member | 150 requests/day |

| Application | 100,000 requests/day |

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

| Status | Meaning |

|--------|---------|

| 400 | Missing LinkedIn connection or invalid request |

| 401 | Invalid or missing Maton API key |

| 403 | Insufficient permissions (check OAuth scopes) |

| 404 | Resource not found |

| 422 | Invalid request body or URN format |

| 429 | Rate limited |

| 4xx/5xx | Passthrough error from LinkedIn API |

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

1. 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

| Scope | Description |

|-------|-------------|

| openid | OpenID Connect authentication |

| profile | Read basic profile |

| email | Read email address |

| w_member_social | Create, modify, and delete posts |

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