# Strev Documentation > Documentation for Strev ## API Reference - [Introduction](https://developer.strev.ai/reference/api-reference.md) - [Authentication](https://developer.strev.ai/reference/authentication.md) - [Pagination](https://developer.strev.ai/reference/pagination.md) - [Rate Limit](https://developer.strev.ai/reference/rate-limit.md) - [Requests](https://developer.strev.ai/reference/requests.md) - [Attach File to Asset](https://developer.strev.ai/reference/attach-file-asset.md): Attach file to a specific asset. - [Attach File to Contract](https://developer.strev.ai/reference/attach-file-contract.md): Attach file to a specific contract. - [Attach File to Customer](https://developer.strev.ai/reference/attach-file-to-contract-copy.md): Attach file to a specific customer. - [Attach File to Supplier](https://developer.strev.ai/reference/attach-file-to-supplier.md): Attach file to a specific supplier. - [Create Asset](https://developer.strev.ai/reference/create-asset.md): Creates an asset. - [Create Asset Owner](https://developer.strev.ai/reference/create-asset-owner.md): Creates an asset owner. - [Create Business Unit](https://developer.strev.ai/reference/create-business-unit.md): Creates a business unit. - [Create Category](https://developer.strev.ai/reference/create-category.md): Creates a category. - [Create Contract](https://developer.strev.ai/reference/create-contract.md): Creates a contract. - [Create Custom Field Template](https://developer.strev.ai/reference/create-custom-field-template.md): Creates a custom field template. - [Create Customer](https://developer.strev.ai/reference/create-customer.md): Creates a customer - [Create Hardware Model](https://developer.strev.ai/reference/create-hardware-model.md): Creates a category. - [Create License ( Beta)](https://developer.strev.ai/reference/create-license.md): Create a license. - [Create Supplier](https://developer.strev.ai/reference/create-supplier.md): Creates a supplier. - [Create Usage Status](https://developer.strev.ai/reference/create-usage-status.md): Creates a category. - [Delete Asset](https://developer.strev.ai/reference/delete-asset.md): Deletes an asset. Any file attachments linked to the asset will be moved back to the uncategorized directory of the Smart Repository. - [Delete License (Beta)](https://developer.strev.ai/reference/delete-license.md): Deletes an asset. Any file attachments linked to the asset will be moved back to the uncategorized directory of the Smart Repository. - [Delete Business Unit](https://developer.strev.ai/reference/delete-business-unit.md): Deletes a business unit. - [Delete Category](https://developer.strev.ai/reference/delete-category.md): Deletes a category. - [Delete Contract](https://developer.strev.ai/reference/delete-contract.md): Deletes a contract. Any file attachments linked to the contract will be moved back to the uncategorized directory of the Smart Repository. - [Delete Customer](https://developer.strev.ai/reference/delete-customer.md): Deletes a customer. Any file attachments linked to the customer will be moved back to the uncategorized directory of the Smart Repository. - [Delete Supplier](https://developer.strev.ai/reference/delete-supplier.md): Deletes a supplier. Any file attachments linked to the supplier will be moved back to the uncategorized directory of the Smart Repository. - [List Asset](https://developer.strev.ai/reference/list-asset.md): Lists all (or one) assets. - [List License (Beta)](https://developer.strev.ai/reference/list-license.md): Lists all (or one) assets. - [List Asset Owner](https://developer.strev.ai/reference/list-asset-owner.md): List all (or one) asset owners. - [List Business Unit](https://developer.strev.ai/reference/list-business-unit.md): List all (or one) business units. - [List Category](https://developer.strev.ai/reference/list-category.md): List all (or one) categories. - [List Company](https://developer.strev.ai/reference/list-company.md): List all (or one) companies. - [List Contract](https://developer.strev.ai/reference/list-contract.md): Lists all (or one) contracts. - [List Contract IDs](https://developer.strev.ai/reference/list-contract_ids.md): Lists all contracts ID and contract number only. - [List Country](https://developer.strev.ai/reference/list-country.md): List all (or one) countries. - [List Custom Field Template](https://developer.strev.ai/reference/list-custom-field-template.md): List all (or one) custom field templates. - [List Custom Form Template](https://developer.strev.ai/reference/list-custom-form-template.md): List all (or one) custom field templates. - [List Customer](https://developer.strev.ai/reference/list-customer.md): Lists all (or one) customers. - [List File](https://developer.strev.ai/reference/list-file.md): Lists all (or one) files. - [List Hardware Model](https://developer.strev.ai/reference/list-hardware-model.md): List all (or one) hardware model - [List Supplier](https://developer.strev.ai/reference/list-supplier.md): Lists all (or one) suppliers. - [List Usage Status](https://developer.strev.ai/reference/list-usage-status.md): List all (or one) usage status - [List User](https://developer.strev.ai/reference/list-user.md): List all (or one) users. - [Update Asset](https://developer.strev.ai/reference/update-asset.md): Updates an asset. - [Update Asset Owner](https://developer.strev.ai/reference/update-asset-owner.md): Updates an asset owner. - [Update Business Unit](https://developer.strev.ai/reference/update-business-unit.md): Updates a business unit. - [Update Category](https://developer.strev.ai/reference/update-category.md): Updates a category. - [Update Contract](https://developer.strev.ai/reference/update-contract.md): Updates a contract. - [Update Custom Field](https://developer.strev.ai/reference/update-custom-field.md): Add additional custom fields to a custom field template. - [Update Custom Field Template](https://developer.strev.ai/reference/update-custom-field-template.md): Updates a custom field template. - [Update Customer](https://developer.strev.ai/reference/update-customer.md): Updates a customer. - [Update License (Beta)](https://developer.strev.ai/reference/update-license.md) - [Update Supplier](https://developer.strev.ai/reference/update-supplier.md): Updates a supplier. - [Upload File](https://developer.strev.ai/reference/upload-file.md): Uploads a file. - [Download File](https://developer.strev.ai/reference/download-file.md)