openapi: 3.1.0
info:
  title: Lusha Account Lookalike API
  description: Lusha is a B2B sales intelligence platform offering verified contact and company data. The platform exposes four REST APIs (Enrichment, Prospecting, Signals, Lookalike) plus webhook subscriptions and an account usage endpoint. Authentication is via an api_key header generated in the Lusha dashboard.
  version: 3.0.0
  contact:
    name: Lusha
    url: https://docs.lusha.com/apis
servers:
- url: https://api.lusha.com
  description: Production
security:
- ApiKeyAuth: []
tags:
- name: Lookalike
  description: AI-powered similar contact and company recommendations
paths:
  /v3/contacts/lookalike:
    post:
      tags:
      - Lookalike
      summary: Find lookalike contacts
      operationId: lookalikeContacts
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
      responses:
        '200':
          description: Similar contact recommendations
  /v3/companies/lookalike:
    post:
      tags:
      - Lookalike
      summary: Find lookalike companies
      operationId: lookalikeCompanies
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
      responses:
        '200':
          description: Similar company recommendations
components:
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: api_key