> ## Documentation Index > Fetch the complete documentation index at: https://docs.validationcloud.io/llms.txt > Use this file to discover all available pages before exploring further. # Get Account > Return the authentication key and the sequence number for an account address. Optionally, a ledger version can be specified. If the ledger version is not specified in the request, the latest ledger version is used. Return the authentication key and the sequence number for an account address. This method will use `15` [Compute Units](/nodeapi/about/billing). *** ## OpenAPI ````yaml nodeapi/openapi/document-aptos-with-v1-fix.json GET /accounts/{address} openapi: 3.0.0 info: title: Aptos Node API description: >- The Aptos Node API is a RESTful API for client applications to interact with the Aptos blockchain. version: 1.2.0 contact: name: Aptos Labs url: https://github.com/aptos-labs/aptos-core license: name: Apache 2.0 url: https://www.apache.org/licenses/LICENSE-2.0.html servers: - url: https://mainnet.aptos.validationcloud.io/v1//v1 security: [] tags: - name: Accounts description: Access to accounts, resources, and modules - name: Blocks description: Access to blocks - name: Events description: Access to events - name: General description: General information - name: Tables description: Access to tables - name: Transactions description: Access to transactions - name: View description: View functions, externalDocs: url: https://github.com/aptos-labs/aptos-core paths: /accounts/{address}: get: tags: - Accounts summary: Get account description: >- Return the authentication key and the sequence number for an account address. Optionally, a ledger version can be specified. If the ledger version is not specified in the request, the latest ledger version is used. operationId: get_account parameters: - name: address schema: $ref: '#/components/schemas/Address' in: path description: Address of account with or without a `0x` prefix required: true deprecated: false explode: true - name: ledger_version schema: $ref: '#/components/schemas/U64' in: query description: |- Ledger version to get state of account If not provided, it will be the latest version required: false deprecated: false explode: true responses: '200': description: '' content: application/json: schema: $ref: '#/components/schemas/AccountData' application/x-bcs: schema: type: array items: type: integer format: uint8 headers: X-APTOS-CHAIN-ID: description: Chain ID of the current chain required: true deprecated: false schema: type: integer format: uint8 X-APTOS-LEDGER-VERSION: description: Current ledger version of the chain required: true deprecated: false schema: type: integer format: uint64 X-APTOS-LEDGER-OLDEST-VERSION: description: Oldest non-pruned ledger version of the chain required: true deprecated: false schema: type: integer format: uint64 X-APTOS-LEDGER-TIMESTAMPUSEC: description: Current timestamp of the chain required: true deprecated: false schema: type: integer format: uint64 X-APTOS-EPOCH: description: Current epoch of the chain required: true deprecated: false schema: type: integer format: uint64 X-APTOS-BLOCK-HEIGHT: description: Current block height of the chain required: true deprecated: false schema: type: integer format: uint64 X-APTOS-OLDEST-BLOCK-HEIGHT: description: Oldest non-pruned block height of the chain required: true deprecated: false schema: type: integer format: uint64 X-APTOS-CURSOR: description: |- Cursor to be used for endpoints that support cursor-based pagination. Pass this to the `start` field of the endpoint on the next call to get the next page of results. deprecated: false schema: type: string '400': description: '' content: application/json: schema: $ref: '#/components/schemas/AptosError' headers: X-APTOS-CHAIN-ID: description: Chain ID of the current chain deprecated: false schema: type: integer format: uint8 X-APTOS-LEDGER-VERSION: description: Current ledger version of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-LEDGER-OLDEST-VERSION: description: Oldest non-pruned ledger version of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-LEDGER-TIMESTAMPUSEC: description: Current timestamp of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-EPOCH: description: Current epoch of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-BLOCK-HEIGHT: description: Current block height of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-OLDEST-BLOCK-HEIGHT: description: Oldest non-pruned block height of the chain deprecated: false schema: type: integer format: uint64 '403': description: '' content: application/json: schema: $ref: '#/components/schemas/AptosError' headers: X-APTOS-CHAIN-ID: description: Chain ID of the current chain deprecated: false schema: type: integer format: uint8 X-APTOS-LEDGER-VERSION: description: Current ledger version of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-LEDGER-OLDEST-VERSION: description: Oldest non-pruned ledger version of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-LEDGER-TIMESTAMPUSEC: description: Current timestamp of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-EPOCH: description: Current epoch of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-BLOCK-HEIGHT: description: Current block height of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-OLDEST-BLOCK-HEIGHT: description: Oldest non-pruned block height of the chain deprecated: false schema: type: integer format: uint64 '404': description: '' content: application/json: schema: $ref: '#/components/schemas/AptosError' headers: X-APTOS-CHAIN-ID: description: Chain ID of the current chain deprecated: false schema: type: integer format: uint8 X-APTOS-LEDGER-VERSION: description: Current ledger version of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-LEDGER-OLDEST-VERSION: description: Oldest non-pruned ledger version of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-LEDGER-TIMESTAMPUSEC: description: Current timestamp of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-EPOCH: description: Current epoch of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-BLOCK-HEIGHT: description: Current block height of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-OLDEST-BLOCK-HEIGHT: description: Oldest non-pruned block height of the chain deprecated: false schema: type: integer format: uint64 '410': description: '' content: application/json: schema: $ref: '#/components/schemas/AptosError' headers: X-APTOS-CHAIN-ID: description: Chain ID of the current chain deprecated: false schema: type: integer format: uint8 X-APTOS-LEDGER-VERSION: description: Current ledger version of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-LEDGER-OLDEST-VERSION: description: Oldest non-pruned ledger version of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-LEDGER-TIMESTAMPUSEC: description: Current timestamp of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-EPOCH: description: Current epoch of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-BLOCK-HEIGHT: description: Current block height of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-OLDEST-BLOCK-HEIGHT: description: Oldest non-pruned block height of the chain deprecated: false schema: type: integer format: uint64 '500': description: '' content: application/json: schema: $ref: '#/components/schemas/AptosError' headers: X-APTOS-CHAIN-ID: description: Chain ID of the current chain deprecated: false schema: type: integer format: uint8 X-APTOS-LEDGER-VERSION: description: Current ledger version of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-LEDGER-OLDEST-VERSION: description: Oldest non-pruned ledger version of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-LEDGER-TIMESTAMPUSEC: description: Current timestamp of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-EPOCH: description: Current epoch of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-BLOCK-HEIGHT: description: Current block height of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-OLDEST-BLOCK-HEIGHT: description: Oldest non-pruned block height of the chain deprecated: false schema: type: integer format: uint64 '503': description: '' content: application/json: schema: $ref: '#/components/schemas/AptosError' headers: X-APTOS-CHAIN-ID: description: Chain ID of the current chain deprecated: false schema: type: integer format: uint8 X-APTOS-LEDGER-VERSION: description: Current ledger version of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-LEDGER-OLDEST-VERSION: description: Oldest non-pruned ledger version of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-LEDGER-TIMESTAMPUSEC: description: Current timestamp of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-EPOCH: description: Current epoch of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-BLOCK-HEIGHT: description: Current block height of the chain deprecated: false schema: type: integer format: uint64 X-APTOS-OLDEST-BLOCK-HEIGHT: description: Oldest non-pruned block height of the chain deprecated: false schema: type: integer format: uint64 components: schemas: Address: type: string format: hex description: > A hex encoded 32 byte Aptos account address. This is represented in a string as a 64 character hex string, sometimes shortened by stripping leading 0s, and adding a 0x. For example, address 0x0000000000000000000000000000000000000000000000000000000000000001 is represented as 0x1. example: '0x88fbd33f54e1126269769780feb24480428179f552e2313fbe571b72e62a1ca1 ' U64: type: string format: uint64 description: > A string containing a 64-bit unsigned integer. We represent u64 values as a string to ensure compatibility with languages such as JavaScript that do not parse u64s in JSON natively. example: '32425224034' AccountData: type: object description: |- Account data A simplified version of the onchain Account resource required: - sequence_number - authentication_key properties: sequence_number: $ref: '#/components/schemas/U64' authentication_key: $ref: '#/components/schemas/HexEncodedBytes' AptosError: type: object description: >- This is the generic struct we use for all API errors, it contains a string message and an Aptos API specific error code. required: - message - error_code properties: message: type: string description: A message describing the error error_code: $ref: '#/components/schemas/AptosErrorCode' vm_error_code: type: integer format: uint64 description: >- A code providing VM error details when submitting transactions to the VM HexEncodedBytes: type: string format: hex description: > All bytes (Vec) data is represented as hex-encoded string prefixed with `0x` and fulfilled with two hex digits per byte. Unlike the `Address` type, HexEncodedBytes will not trim any zeros. example: '0x88fbd33f54e1126269769780feb24480428179f552e2313fbe571b72e62a1ca1 ' AptosErrorCode: type: string description: |- These codes provide more granular error information beyond just the HTTP status code of the response. enum: - account_not_found - resource_not_found - module_not_found - struct_field_not_found - version_not_found - transaction_not_found - table_item_not_found - block_not_found - version_pruned - block_pruned - invalid_input - invalid_transaction_update - sequence_number_too_old - vm_error - health_check_failed - mempool_is_full - internal_error - web_framework_error - bcs_not_supported - api_disabled ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.