# Cnpja v0.1.2 - Table of Contents > Elixir SDK for the CNPJá API — CNPJ, CEP, RFB, Simples Nacional, CCC and SUFRAMA lookups. ## Pages - [cnpja_ex](readme.md) - [Changelog](changelog.md) ## Modules - [Cnpja](Cnpja.md): Elixir SDK for the CNPJá API. - Responses - [Cnpja.Ccc](Cnpja.Ccc.md): State tax registrations from the CCC (Cadastro Centralizado de Contribuintes). - [Cnpja.Company](Cnpja.Company.md): Company (CNPJ root) with its establishments, members, and tax enrollment data. - [Cnpja.CompanyRef](Cnpja.CompanyRef.md): Lightweight company reference embedded inside an establishment — excludes the offices list to avoid circular data. - [Cnpja.Credit](Cnpja.Credit.md): Account credit balance. - [Cnpja.Office](Cnpja.Office.md): Establishment identified by a full 14-digit CNPJ. - [Cnpja.OfficeSearch](Cnpja.OfficeSearch.md): Paginated result of an establishment search. - [Cnpja.Person](Cnpja.Person.md): Individual or legal entity with their company memberships. - [Cnpja.PersonSearch](Cnpja.PersonSearch.md): Paginated result of a person search. - [Cnpja.Rfb](Cnpja.Rfb.md): Establishment data sourced directly from the Receita Federal, including the membership board. - [Cnpja.Simples](Cnpja.Simples.md): Simples Nacional and MEI enrollment data for a company. - [Cnpja.Suframa](Cnpja.Suframa.md): SUFRAMA enrollment data for an establishment. - [Cnpja.Zip](Cnpja.Zip.md): Brazilian postal code (CEP) data. - Shared - [Cnpja.Activity](Cnpja.Activity.md): Economic activity (CNAE code). - [Cnpja.Address](Cnpja.Address.md): Physical address of an establishment. - [Cnpja.Agent](Cnpja.Agent.md): Legal representative of a company member. - [Cnpja.Country](Cnpja.Country.md): Country per the M49 standard table. - [Cnpja.Email](Cnpja.Email.md): Email address of an establishment. - [Cnpja.Label](Cnpja.Label.md): Generic label with an integer id and a display text (legal nature, company size, status, etc.). - [Cnpja.Member](Cnpja.Member.md): Company member or administrator. - [Cnpja.OfficeLinks](Cnpja.OfficeLinks.md): Links to public documents of an establishment (certificates, map, street view). - [Cnpja.PersonMembership](Cnpja.PersonMembership.md): A person's membership record within a company. - [Cnpja.PersonMembershipCompany](Cnpja.PersonMembershipCompany.md): Lightweight company reference inside a person membership record. - [Cnpja.PersonRef](Cnpja.PersonRef.md): Reference to a person (company member or legal representative). - [Cnpja.Phone](Cnpja.Phone.md): Phone number of an establishment. - [Cnpja.SimplesHistory](Cnpja.SimplesHistory.md): Historical period of Simples Nacional or MEI enrollment. - [Cnpja.SimplesOpt](Cnpja.SimplesOpt.md): Simples Nacional enrollment or MEI classification data. - [Cnpja.SizeLabel](Cnpja.SizeLabel.md): Company size classification with id, acronym, and display text. - [Cnpja.StateRegistration](Cnpja.StateRegistration.md): State tax registration (Inscrição Estadual) of an establishment. - [Cnpja.SuframaIncentive](Cnpja.SuframaIncentive.md): Tax incentive granted by SUFRAMA. - Internals - [Cnpja.Error](Cnpja.Error.md): Error returned by the CNPJá API.