> For the complete documentation index, see [llms.txt](https://docs.alignlabs.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.alignlabs.dev/align-api/external-accounts/create-external-account.md). # Create External Account ## Create new External Account > Creates external account and returns account information ```json {"openapi":"3.0.0","info":{"title":"External Accounts API","version":"0"},"servers":[{"url":"https://api.alignlabs.dev","description":"Production server"},{"url":"https://api-sandbox.alignlabs.dev","description":"Sandbox server"}],"paths":{"/v0/customers/{customer_id}/external-accounts":{"post":{"summary":"Create new External Account","description":"Creates external account and returns account information","parameters":[{"name":"customer_id","in":"path","description":"The unique identifier of the customer","required":true,"schema":{"type":"string"}},{"name":"Api-Key","in":"header","description":"Your secret API key, available in the developer dashboard. Include this header on every request to authenticate your application.","required":true,"schema":{"type":"string"}},{"name":"Idempotency-Key","in":"header","description":"Unique key to prevent duplicate requests","required":true,"schema":{"type":"string"}}],"requestBody":{"required":true,"content":{"application/json":{"schema":{"$ref":"#/components/schemas/CreateExternalAccountBodyModel"}}}},"responses":{"201":{"description":"Successful external account creation response","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ExternalAccountModel"}}}}}}}},"components":{"schemas":{"CreateExternalAccountBodyModel":{"type":"object","description":"External account details for bank transfers. Can be either IBAN-based or US-based account.","oneOf":[{"title":"IBAN Account Details","description":"Use this option for European and other IBAN-supported bank accounts","properties":{"bank_name":{"type":"string"},"account_holder_type":{"type":"string","enum":["individual","business"]},"account_holder_first_name":{"type":"string"},"account_holder_last_name":{"type":"string"},"account_holder_business_name":{"type":"string"},"account_holder_address":{"type":"object","properties":{"country":{"type":"string","description":"Two-letter ISO 3166-1 alpha-2 country code","minLength":2,"maxLength":2},"city":{"type":"string","minLength":1,"maxLength":128},"street_line_1":{"minLength":1,"type":"string","maxLength":255},"postal_code":{"minLength":1,"type":"string","maxLength":48}},"required":["country","city","street_line_1","postal_code"]},"account_type":{"type":"string","enum":["iban"]},"iban":{"type":"object","properties":{"bic":{"type":"string"},"iban_number":{"type":"string"}}}},"required":["bank_name","account_holder_type","account_holder_address","account_type","iban"]},{"title":"US Account Details","description":"Use this option for US-based bank accounts using routing and account numbers","properties":{"bank_name":{"type":"string"},"account_holder_type":{"type":"string","enum":["individual","business"]},"account_holder_first_name":{"type":"string"},"account_holder_last_name":{"type":"string"},"account_holder_business_name":{"type":"string"},"account_holder_address":{"type":"object","properties":{"country":{"type":"string","description":"Two-letter ISO 3166-1 alpha-2 country code","minLength":2,"maxLength":2},"city":{"type":"string","minLength":1,"maxLength":128},"street_line_1":{"minLength":1,"type":"string","maxLength":255},"postal_code":{"minLength":1,"type":"string","maxLength":48}},"required":["country","city","street_line_1","postal_code"]},"account_type":{"type":"string","enum":["us"]},"us":{"type":"object","properties":{"account_number":{"type":"string"},"routing_number":{"type":"string"}}}},"required":["bank_name","account_holder_type","account_holder_address","account_type","us"]},{"title":"International Wire Account Details","description":"Use this option for international wire (SWIFT) transfers using account number, routing number, and BIC","properties":{"bank_name":{"type":"string"},"account_holder_type":{"type":"string","enum":["individual","business"]},"account_holder_first_name":{"type":"string"},"account_holder_last_name":{"type":"string"},"account_holder_business_name":{"type":"string"},"account_holder_address":{"type":"object","properties":{"country":{"type":"string","description":"Two-letter ISO 3166-1 alpha-2 country 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Details","properties":{"id":{"type":"string","format":"uuid"},"created_at":{"type":"string","format":"date-time"},"bank_name":{"type":"string"},"account_holder_type":{"type":"string","enum":["individual","business"]},"account_holder_first_name":{"type":"string"},"account_holder_last_name":{"type":"string"},"account_holder_business_name":{"type":"string"},"account_holder_address":{"type":"object","properties":{"country":{"type":"string","description":"Two-letter ISO 3166-1 alpha-2 country 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Details","properties":{"id":{"type":"string","format":"uuid"},"created_at":{"type":"string","format":"date-time"},"bank_name":{"type":"string"},"account_holder_type":{"type":"string","enum":["individual","business"]},"account_holder_first_name":{"type":"string"},"account_holder_last_name":{"type":"string"},"account_holder_business_name":{"type":"string"},"account_holder_address":{"type":"object","properties":{"country":{"type":"string","description":"Two-letter ISO 3166-1 alpha-2 country 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Details","properties":{"id":{"type":"string","format":"uuid"},"created_at":{"type":"string","format":"date-time"},"bank_name":{"type":"string"},"account_holder_type":{"type":"string","enum":["individual","business"]},"account_holder_first_name":{"type":"string"},"account_holder_last_name":{"type":"string"},"account_holder_business_name":{"type":"string"},"account_holder_address":{"type":"object","properties":{"country":{"type":"string","description":"Two-letter ISO 3166-1 alpha-2 country code","minLength":2,"maxLength":2},"city":{"type":"string","minLength":1,"maxLength":128},"street_line_1":{"minLength":1,"type":"string","maxLength":255},"postal_code":{"minLength":1,"type":"string","maxLength":48}},"required":["country","city","street_line_1","postal_code"]},"account_type":{"type":"string","enum":["international_wire"]},"international_wire":{"type":"object","properties":{"account_number":{"type":"string"},"routing_number":{"type":"string"},"bic":{"type":"string"}},"required":["account_number","routing_number","bic"]}},"required":["id","created_at","bank_name","account_holder_type","account_holder_address","account_type","international_wire"]}]}}}} ``` --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.alignlabs.dev/align-api/external-accounts/create-external-account.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.