RB2B

Turn pageviews into named leads

APICapable readiness

About

What is RB2B

RB2B drops a pixel on your site and resolves anonymous visitors into named individuals — returning LinkedIn profiles, verified emails, and firmographic breakdowns without any manual lookup. It's built for SDRs, BDRs, founders, and RevOps teams at solo shops and SMBs who want to act on inbound intent before it goes cold. The standout capability is person-level identification: rather than just telling you a company visited, RB2B surfaces the specific individual and pushes that profile directly to Slack, making it actionable in seconds. Coverage is currently limited to US IP addresses, so teams with significant international traffic will only see partial results from their visitor pool.

Data & Discovery

Capabilities

Key features

Visitor identification

de-anonymises anonymous website traffic

Native CRM + team chat integration

first-party connectors, no middleware required

Data

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

Webhooks + no-code automation support

fits any iPaaS or workflow chain

Our verdict

Vanderbuild take

RB2B is a focused visitor identification tool — it does one thing (tell you who visited your site and who that person is) and routes that signal directly into the workflows SDRs, founders, and RevOps teams already live in. The API is available, so you can wrap RB2B into your own automation stack or MCP layer without much friction — solid agentic readiness for a tool in this category. Free or near-free to start, with 150 resolutions per month at $0, making it genuinely low-risk to test against your actual traffic. The honest constraint is geographic: identification is US-focused, so if a meaningful slice of your ICP is outside the US, you'll be working with an incomplete picture from day one.

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

Signal source · Verifier · Enricher

Where this tool slots into an agentic pipeline.

Plays the role of Signal source + Verifier + Enricher in an agentic pipeline. Use it to surface buying intent — funding, hiring, job changes, web visits; validate emails or phones before an agent sends or dials.

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