# RB2B

**Canonical:** https://apis.io/providers/rb2b/  
**Website:** https://www.rb2b.com  
**APIs profiled:** 4

RB2B is a US-focused B2B website visitor identification platform that resolves anonymous web traffic into person-level leads — names, LinkedIn profiles, hashed and plaintext business emails, mobile ad IDs, and full business profiles — and pushes them to sales, marketing, and ad-tech systems. The product is delivered as a JavaScript pixel plus a knowledge- base and pipeline of 50+ destination integrations (Slack, Microsoft Teams, Salesforce, HubSpot, Clay, Zapier, Apollo, Customer.io, Demandbase, and others), with global company-level identification and US-only person- level resolution. RB2B operates a separate API Partner Program at api.rb2b.com/api/v1 that exposes credit-metered Identification endpoints (IP → Company, IP → HEM, IP → MAID) and Enrichment endpoints (HEM/Email → LinkedIn, HEM/Email → Business Profile, HEM/Email → MAID, LinkedIn → Hashed Emails, LinkedIn → Personal Email, LinkedIn → Mobile Phone, LinkedIn → Business Profile) for SaaS developers, GTM engineers, retailers, and ad-tech platforms that want to embed identity resolution into their own apps and identity graphs. A separate OEM Partner API at app.rb2b.com/api/v1 manages authorized domains and credit usage for partners embedding RB2B in their own products. RB2B publishes no OpenAPI; the only machine-readable description of its API is its own first-party MCP server, @rb2b/rb2b-apis-mcp, which exposes 19 tools over the same endpoints. The platform is SOC 2 Type 2 certified and CCPA compliant.

## Kin Score — 58.3 / 100 (strong)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 58.3).

| Facet | Score |
|---|---|
| Discoverability | 92.6 |
| Contract Quality | 45.1 |
| Governance | 18.2 |
| Contract Governance | 18.2 |
| Operational Transparency | 44.7 |
| Developer Ergonomics | 56.5 |
| Commercial Clarity | 92.1 |
| Access Clarity | 92.1 |

## Agent readiness — 36.5 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | yes |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Free plan plus paid tiers; API credits sold separately — onboarding: unknown, pricing: freemium, trial: yes (confidence: high).

## APIs (4)

- **RB2B Identification API** — Credit-metered Identification endpoints that convert anonymous web signals (IP addresses) into business identifiers — POST /ip_to_company, POST /ip_to_hem (hashed email, ranked ...
- **RB2B Enrichment API** — Credit-metered Enrichment endpoints that take a known identifier — hashed email (MD5), plaintext email, or LinkedIn slug — and return additional B2B attributes: POST /hem_to_lin...
- **RB2B OEM Partner API** — The domain-management and usage API for RB2B OEM partners embedding RB2B identification inside their own platforms — POST /add_domain, POST /delete_domain, GET /domains and GET ...
- **RB2B Pixel and Destination Webhooks** — The RB2B JavaScript pixel installed in a site header (or via Google Tag Manager / Segment / RudderStack / Shopify / Webflow / WordPress / HubSpot CMS / Wix / Next.js / React / A...

## MCP servers (2)

- **RB2B MCP Server**
- **RB2B MCP Server** — RB2B publishes a first-party local (stdio) MCP server, @rb2b/rb2b-apis-mcp, that exposes the RB2B Identity / Enrichment API Partner Program surface (https://api.rb2b.com/api/v1)...

## Security (3)

- **Rb2B Authentication** — apiKey · 1 scheme
- **Rb2B Domain Security** — TLSv1.3 · HSTS · DMARC
- **Rb2B Trust Center** — SOC 2 Type 2, CCPA, GDPR

## Plans (1)

- **Rb2B Plans Pricing**

## Tags

Identity Resolution, Visitor Identification, B2B Data, Lead Generation, Sales Intelligence, Marketing, Data Enrichment, LinkedIn Enrichment, Hashed Email, Mobile Ad ID, Firmographics, Webhook, Pixel, AdTech, Identity Graph, MCP

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/rb2b/). Scores are computed from the provider's own public artifacts under a published rubric.