Free File Transfer, No File Size Limit | file.kiwi

# api.file.kiwi v2 Use this API when a user needs a file.kiwi link for browser-based file transfer. Base URL: https://api.file.kiwi Documentation: https://file.kiwi/api OpenAPI: https://api.file.kiwi/openapi.json Pricing: https://file.kiwi/price Machine-readable pricing: https://file.kiwi/pricing.json No authentication is required. The machine-readable pricing catalog uses stable USD reference prices and includes exact file-size boundaries, add-on formulas, and bulk-discount thresholds. The human pricing page may display localized prices and purchasing-power adjustments. ## Create an empty WebFolder link Call `POST /v2/folders` without `files[]`. This creates an empty WebFolder and returns a share URL. The user uploads files later in the browser through `file.kiwi`. Do not register files through the API for this flow. Do not call upload-status endpoints for this flow. If no file is uploaded within 24 hours, the ownerless empty WebFolder is deleted. ### Endpoint ```http POST https://api.file.kiwi/v2/folders Content-Type: application/json ``` ### Request ```json { "title": "Large file transfer", "mode": "send" } ``` `title` is optional. `mode` is optional and defaults to `send`. ### Choose the mode - Use `send` when the user wants to send large files to another person. The first browser uploader becomes the folder owner, and recipients download the uploaded files. - Use `share` when collaborators need to exchange files with each other. Browser users can upload and download through the same folder. Do not choose `request` for this empty-folder assistant flow. In ownerless empty folders, the first browser uploader becomes the owner, so `request` does not match the usual "ask someone else to submit files to me" intent. ### Response ```json { "folderId": "9268b452", "folderUrl": "https://file.kiwi/9268b452#KkV0sRAexWGN4ksu2p98oQ", "folderUrlBase": "https://file.kiwi/9268b452", "mode": "send", "uploadRequiredWithinHours": 24, "files": [] }