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LinkupAPI Documentation

LinkupAPI connects your product or AI agent to LinkedIn, WhatsApp, and real-time B2B intelligence. One unified API to automate outreach, find contacts, and gather market insights for sales and recruitment.

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What You Can Build

Sales Automation

Generate leads, automate outreach on LinkedIn/WhatsApp, track funding signals, and enrich company data in real-time.

Recruitment Automation

Source candidates, track hiring companies, and connect with talent on LinkedIn and WhatsApp at scale.

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Three API Categories

Engagement API - Automate LinkedIn and WhatsApp interactions
  • LinkedIn: Invitations, Messages, Comments
  • WhatsApp: Messaging with media support
Mail API - Find and verify professional emails
  • Email Finder, Verifier, Reverse Lookup
Web Crawler API - Real-time B2B intelligence (public data only)
  • People Search, Company Intelligence, Hiring Signals, Funding Data

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Quick Start

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1. Get Your API Key

Sign up at linkupapi.com

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2. Make Your First Request

curl -H "x-api-key: your_api_key" \
  https://api.linkupapi.com/v1/data/search/funded-companies

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3. Explore the Docs

Browse endpoints and start building your automation.

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Need Help?