LeadGenius

B2B contact data built for GTM teams

APICapable readiness

About

What is LeadGenius

LeadGenius pulls together AI and human intelligence to build and enrich B2B contact records in real time, covering firmographics, technographics, and buyer personality signals. It's built for SDRs, BDRs, RevOps operators, and GTM leads at mid-market and enterprise companies who need data that goes beyond what static databases provide. The standout capability is its ability to track role changes and champion shifts — so when a key contact moves to a new company, your team knows before the deal goes cold. Data is sourced with global compliance in mind, and custom data architectures mean you're not forced into a one-size-fits-all schema. That said, pricing is contact-sales only with no public tiers, which makes it a harder evaluation for teams without procurement bandwidth or a clear budget already allocated.

Data & Discovery

Capabilities

Key features

Prospecting database

searchable B2B contact + company directory

AI capabilities

per-prospect AI research

Data

verified emails, real-time enrichment, firmographic + tech-stack data

Outbound webhooks

event-driven integrations

Our verdict

Vanderbuild take

LeadGenius sits firmly in the prospecting database and data enrichment tier, and it's one of the few tools in this space that pairs AI research with human verification — making it a credible option for SDR/BDR teams and RevOps leads who've been burned by stale static databases. On the agentic readiness front, the API is available and the architecture is capable enough that you can wrap it into your own MCP layer or orchestration stack without too much friction — it won't fight you. Pricing is fully gated behind a sales conversation, which means no self-serve trial and no public benchmarks to sanity-check against — budget for procurement involvement and a longer evaluation cycle. The custom data architecture angle is genuinely useful for enterprise GTM teams, but smaller or faster-moving scale-ups may find the onboarding and scoping process slower than they'd like.

Mateusz Sekta

Founder, vanderbuild

The wedge

Agentic stack profile

API

REST

Programmatic access available.

REST API — straightforward to call from any agent or workflow tool. Rate limits and auth vary by plan.

API docs →

Agentic readiness

Capable

Solid API access — wraps cleanly for agent use.

Solid REST or SDK access. No MCP server yet, but easy to wrap in custom agent tooling. Most modern SaaS tools land here.

Stack role

Data source · Enricher

Where this tool slots into an agentic pipeline.

Plays the role of Data source + Enricher in an agentic pipeline. Use it to source contacts, companies, and the raw inputs an agent needs to act; add firmographic, technographic, and signal data to a lead row on the fly.

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