FirstParty is a server-side tracking brand helping Shopify businesses, lead-generation companies, and agencies recover advertising data and improve campaign performance. Its service sends enriched first-party conversion signals to advertising and analytics platforms, aiming to reduce data loss caused by browser restrictions, ad blockers, and cookie limits. The company says its tracking can improve attribution, enlarge retargeting audiences, and help platforms optimize ad delivery with more complete conversion information.

FirstParty offers integrations with Meta Pixel and Conversions API, Google Ads, and GA4, with additional connections available upon request for platforms including Klaviyo, TikTok, LinkedIn, OpenAI, Reddit, Pinterest, and Snapchat. Features include custom tracking server provisioning, event enrichment and deduplication, longer-lasting first-party cookies, identity recovery, and real-time monitoring. The team reviews each system before deployment and provides founder support.

For Shopify brands and agencies, the company offers a monthly plan with no setup fee or percentage-based charges. FirstParty also works with non-Shopify stacks, complex lead-generation funnels, and multi-client agencies, with pricing based on funnel complexity and client volume.