RB2B Enrichment API

aid: rb2b:rb2b-enrichment-api
name: RB2B Enrichment API
tags:
- Enrichment
- LinkedIn
- Email
- Phone
- Business Profile
- B2B Data
humanURL: https://ui.api.rb2b.com
baseURL: https://api.rb2b.com/api/v1
description: '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_linkedin, /hem_to_best_linkedin,
  /hem_to_business_profile and /hem_to_maid (each accepting either an `md5` or an `email` key), plus /linkedin_to_hashed_emails,
  /linkedin_to_best_personal_email, /linkedin_to_personal_email, /linkedin_to_mobile_phone and /linkedin_to_business_profile.
  Costs run 1–4 credits per successful call. Designed for SaaS developers, GTM engineers and ad-tech platforms
  enriching their own identity graphs. Shares the api.rb2b.com host, account and credit balance with the
  Identification API.'
properties:
- url: https://ui.api.rb2b.com
  type: Portal
- url: https://support.rb2b.com/en/
  type: Documentation
- url: https://ui.api.rb2b.com/signup
  type: SignUp
- url: https://www.npmjs.com/package/@rb2b/rb2b-apis-mcp
  type: MCPServer
x-evidence:
  verified: '2026-08-12'
  method: live probe
  checks:
  - POST https://api.rb2b.com/api/v1/ip_to_company with a malformed key → 401 {"error":"invalid_api_key_format"}
  contract_source: Endpoint paths, request-body keys and per-call credit costs read verbatim from @rb2b/rb2b-apis-mcp
    1.1.7; captured in mcp/rb2b-mcp-tools.json and mcp/rb2b-tool-crosswalk.yml.