{"tld":"us","registry":"usTLD (Registry Services, LLC) - the usTLD Nexus Requirements","provisional":true,"provisional_reason":"Field names come from Openprovider's published extensions table (`nexusCategory`, `applicantPurpose`), which documents the LEGACY camelCase API. The v1beta REST surface this client uses spells fields in snake_case (its own docs show `company_registration_number` for .no, `company_name_cyrillic` for .ru), so the wire names below are the snake_case forms - inferred, not observed. Confirm with `get_additional_data_description('us')` before selling.","verification":"none","verification_note":null,"sellable":false,"sellable_note":"Satisfying this schema does not yet buy a .us. The schema is published so a form can be built against it, but the ending stays unsellable until the field names are confirmed against the registrar by a real end-to-end registration. /api/buy-domain refuses until then.","version":"2026-08-19","source":"Openprovider published documentation (doc.openprovider.eu API_Format_Extensions_Additional_Data_Customer + API_Format_Additional_Data_Customer, read 2026-08-18) for .us; the usTLD Nexus policy for the .us allowed values; ISOC-IL's published registrant rules for .co.il / .org.il. NOT read from the live registrar - see `provisional`.","schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","$id":"https://mcp.justdomain.ai/api/v1/tlds/us/requirements.schema.json","title":".us registrant requirements","description":"The usTLD Nexus Requirements. A .us registrant must be a US citizen or permanent resident, a US-organised entity, or a foreign entity with a bona fide presence in the US, and must declare both a nexus category and the purpose of the registration.","type":"object","additionalProperties":false,"required":["us_nexus_category","us_nexus_country"],"properties":{"us_nexus_category":{"type":"string","title":"Nexus category","description":"How the registrant qualifies under the usTLD Nexus Requirements.","enum":["C11","C12","C21","C31","C32"],"x-provider-field":"nexus_category","x-provider-field-legacy":"nexusCategory","x-applies-to":"customer","x-enum-labels":{"C11":"A natural person who is a US citizen","C12":"A natural person who is a permanent resident of the US","C21":"An entity or organisation formed in the US or one of its territories","C31":"A foreign entity or organisation with a bona fide presence in the US","C32":"A foreign entity or organisation with an office or other facility in the US"},"x-help":"Choose the option that describes you or your organisation. The .us registry only accepts registrants with a real connection to the United States, and this is where you declare which kind you have."},"us_nexus_country":{"type":"string","title":"Country of citizenship or organisation","description":"ISO 3166-1 alpha-2 country code for the registrant's citizenship or country of organisation.","pattern":"^[A-Z]{2}$","x-provider-field":"nexus_country","x-provider-field-legacy":"nexusCountry","x-applies-to":"customer","x-help":"Two letters, for example US. If you chose one of the foreign-entity options above, enter the country your organisation is based in."},"us_application_purpose":{"type":"string","title":"Application purpose","description":"What the domain will be used for, as defined by the usTLD policy.","enum":["P1","P2","P3","P4","P5"],"x-provider-field":"applicant_purpose","x-provider-field-legacy":"applicantPurpose","x-applies-to":"customer","x-enum-labels":{"P1":"Business use for profit","P2":"Non-profit business, club, association or religious organisation","P3":"Personal use","P4":"Educational purposes","P5":"Government purposes"},"x-help":"Tell the registry what the domain is for. This one is optional - leave it blank if none of the options fits."}}}}