LinkupAPI

LinkupAPI is a unified B2B API platform that brings the capabilities AI agents and business applications actually need into one place: LinkedIn engagement, WhatsApp messaging, real-time web crawling, professional email discovery, contact enrichment, company data, and buying signals. Instead of stitching together multiple tools and data sources, teams can plug into a single, consistent interface and start automating right away.

The platform exposes more than 50 endpoints covering a wide range of day-to-day activities. You can send LinkedIn messages, manage connection invitations, and interact with posts; find and verify professional emails; extract detailed company information; monitor job postings; and identify real-time intent signals that show when a prospect or company is ready to engage.

LinkupAPI is built for the workflows where this data matters most, including sales outreach, recruitment, CRM enrichment, no-code automation, and AI-agent pipelines. Whether you are enriching a contact record, scouting candidates, or letting an AI agent act on live buying signals, the platform provides the reach and reliability to turn scattered B2B data into actionable results.