Explorium API

Explorium is an enterprise B2B data API platform that provides access to a unified dataset of 146M+ business entities and 767M+ employee profiles aggregated from 50+ sources. Originally founded in 2017 as an external data platform for machine learning teams, it pivoted in March 2025 with the launch of AgentSource, repositioning itself as a suite of APIs for GTM AI agents. The platform is designed for engineering and data teams building automated go-to-market workflows, not for individual SDRs logging in to pull lists. It competes with API-first data providers like Coresignal, People Data Labs, and Bright Data, rather than traditional sales intelligence tools like ZoomInfo or Apollo. The underlying data covers 4,000+ data points across firmographics, technographics, and employee profiles, with real-time event tracking for business triggers such as IPOs, M&A, and funding rounds.

The API suite includes several distinct endpoints: EnrichAPI for multi-source enrichment of companies and contacts, FetchAPI for finding businesses and people via filters, EventAPI for real-time business and prospect events, and an MCP Server for AI agent workflows. The platform supports bulk enrichments for up to 50 records in a single request, autocomplete and matching for entity resolution, and various data formats including CSV, JSON, JSONL, and Parquet. Pricing is credit-based, with credits consumed at different rates depending on the action: 1 credit for generates, 1-5 credits for enrichments, 1 credit for events, and 5 credits for custom data. The free trial provides 100 credits for 90 days, allowing users to test the APIs before committing to a paid plan. The platform also integrates with Outreach to power their AI Prospecting Agent, and offers beta versions of Match API and ChatAPI.

Explorium's market position is distinct from both traditional data providers and modern AI agent platforms. Its primary competitors include Coresignal, PredictLeads, People Data Labs, and Bright Data, which offer similar API-first data services. It also competes indirectly with broader data and AI platforms like Alteryx, Dataiku, DataRobot, Google, Microsoft, SAP, and Salesforce (Tableau). The platform's strength lies in its unified data API and MCP suite, which enables native AI agent integration and supports AI-powered GTM workflows. However, it is not designed for outbound sales teams needing verified emails and phone numbers; users seeking that functionality should look to specialized tools like Prospeo. The platform's credit-based pricing with no rollover can be challenging for teams with seasonal or variable usage patterns, and service stops immediately when credits run out.

The honest trade-offs with Explorium are significant. Credits do not roll over and expire after 12 months, which punishes teams with variable usage patterns. Pricing varies significantly between different sources, with Capterra listing $50,000/year while the actual Starter plan is $200 for 5,000 credits. Some users report mixed reviews, with Trustpilot giving a 2.0 out of 5 rating (though this is dragged down by data subjects complaining about privacy notification emails, not actual API users). CRM integration is limited, and the platform requires an API key for authentication, which adds friction for non-technical teams. The platform is best suited for engineering teams building custom GTM workflows, not for sales teams looking for an out-of-the-box prospecting tool.

Free trial: $0 for 100 credits (90 days). Starter: $200 for 5,000 credits (12 months). Growth: $1,500 for 50,000 credits.

Scale: $7,500 for 500,000 credits. Enterprise: custom, typically $25K-$100K/year. Credits consumed at 1-5 per action depending on type.