> ## Documentation Index > Fetch the complete documentation index at: https://platform.doodocs.kz/llms.txt > Use this file to discover all available pages before exploring further. # Create File Upload > Reserves a file and returns a short-lived presigned POST form to upload it to. Submit the form as multipart/form-data with the returned fields first and the bytes in a trailing `file` part. The upload is unusable until ConfirmFileUpload accepts it. Required scope: documents:write Error Codes: - DEVELOPER.SCOPE_INSUFFICIENT: The key lacks the documents:write scope. - FILE.INVALID_CONTENT_TYPE: The content type is not application/pdf. - FILE.INVALID_SIZE: size_bytes is zero, negative, or above the limit. - FILE.PENDING_LIMIT_EXCEEDED: Too many unconfirmed uploads for the key owner. ## OpenAPI ````yaml /api-reference/openapi.yaml post /developer/v1/files openapi: 3.0.3 info: description: >- Публичный Developer API Doodocs People. Аутентификация — заголовок X-API-Key. title: Doodocs People API version: 1.0.0 servers: - description: Production url: https://app.doodocs.kz/api security: - ApiKeyAuth: [] tags: - description: ApiKeyService exposes Developer API key utilities. name: ApiKeyService - description: >- DocumentService is the public Developer API for documents: reading, creating, downloading, routing, and signing. Authentication: X-API-Key. Every call runs as the key's owner within the key's tenant — the owner's document permissions decide what is visible and which actions are allowed, exactly as they would in the web app. Fields that carry personal data of other participants (names, IIN, positions) are never exposed; participants are identified by id only. Typical flow: discover a template with ListDocumentTemplates / GetDocumentTemplate (to learn its variable_schema), create a draft with CreateDocument, set its route with SetDocumentRoute, launch it with SendDocument, then apply signatures with SignDocument as slots become active. To circulate a document produced elsewhere, upload it with FileService and pass the confirmed file_id to CreateDocument instead of a template. name: DocumentService - description: |- EmployeeService is the public Developer API for reading employees. Authentication: X-API-Key. The key's tenant and the key owner's data scope determine which employees and fields are visible; sensitive fields the caller may not view are omitted and listed in `redacted_fields`. name: EmployeeService - description: |- FileService uploads the files documents are created from. Authentication: X-API-Key. An upload belongs to the key's owner, and only their key can attach it to a document. Flow: CreateFileUpload reserves the file and returns a presigned POST form, the client sends the bytes straight to storage, ConfirmFileUpload marks the upload complete, and CreateDocument attaches it by id. name: FileService - description: IngestService accepts batches of external records into the tenant. name: IngestService - name: LoginService - description: |- WebhookService lets a tenant manage subscriptions to Developer API events. Authentication: X-API-Key with the webhooks:manage scope. name: WebhookService paths: /developer/v1/files: post: tags: - FileService summary: Create File Upload description: >- Reserves a file and returns a short-lived presigned POST form to upload it to. Submit the form as multipart/form-data with the returned fields first and the bytes in a trailing `file` part. The upload is unusable until ConfirmFileUpload accepts it. Required scope: documents:write Error Codes: - DEVELOPER.SCOPE_INSUFFICIENT: The key lacks the documents:write scope. - FILE.INVALID_CONTENT_TYPE: The content type is not application/pdf. - FILE.INVALID_SIZE: size_bytes is zero, negative, or above the limit. - FILE.PENDING_LIMIT_EXCEEDED: Too many unconfirmed uploads for the key owner. operationId: FileService_CreateFileUpload requestBody: content: application/json: schema: $ref: '#/components/schemas/CreateFileUploadRequest' required: true responses: '200': content: application/json: schema: $ref: '#/components/schemas/CreateFileUploadResponse' description: OK default: content: application/json: schema: $ref: '#/components/schemas/Status' description: Default error response components: schemas: CreateFileUploadRequest: properties: content_type: description: >- Must be application/pdf: the file is attached as the document's PDF as it is, without conversion. type: string filename: description: Filename to store the file under (shown when downloading). type: string size_bytes: description: Exact size of the bytes to upload; storage rejects a larger object. type: string required: - filename - content_type - size_bytes type: object CreateFileUploadResponse: properties: file: allOf: - $ref: '#/components/schemas/FileUpload' description: The reserved upload (status PENDING). readOnly: true upload: allOf: - $ref: '#/components/schemas/PresignedUpload' description: The presigned form to POST the bytes to. readOnly: true type: object Status: description: >- The `Status` type defines a logical error model that is suitable for different programming environments, including REST APIs and RPC APIs. It is used by [gRPC](https://github.com/grpc). Each `Status` message contains three pieces of data: error code, error message, and error details. You can find out more about this error model and how to work with it in the [API Design Guide](https://cloud.google.com/apis/design/errors). properties: code: description: >- The status code, which should be an enum value of [google.rpc.Code][google.rpc.Code]. format: int32 type: integer details: description: >- A list of messages that carry the error details. There is a common set of message types for APIs to use. items: $ref: '#/components/schemas/GoogleProtobufAny' type: array message: description: >- A developer-facing error message, which should be in English. Any user-facing error message should be localized and sent in the [google.rpc.Status.details][google.rpc.Status.details] field, or localized by the client. type: string type: object FileUpload: description: FileUpload is a file owned by the key's owner. properties: content_type: description: MIME type of the file (application/pdf). readOnly: true type: string create_time: description: When the upload was reserved. format: date-time readOnly: true type: string filename: description: Filename as reserved at creation. readOnly: true type: string id: description: Upload id (UUID) — pass to ConfirmFileUpload and CreateDocument. readOnly: true type: string size_bytes: description: Reserved size of the file in bytes. readOnly: true type: string status: description: 'Where the upload stands: PENDING, UPLOADED, or LINKED.' enum: - FILE_UPLOAD_STATUS_UNSPECIFIED - FILE_UPLOAD_STATUS_PENDING - FILE_UPLOAD_STATUS_UPLOADED - FILE_UPLOAD_STATUS_LINKED format: enum readOnly: true type: string type: object PresignedUpload: description: PresignedUpload is the form to POST the bytes to. properties: expires_at: description: When the form stops being accepted; re-create the upload after that. format: date-time readOnly: true type: string fields: additionalProperties: type: string description: Form fields to send before the file part, verbatim. readOnly: true type: object url: description: Storage URL to POST the multipart form to. readOnly: true type: string type: object GoogleProtobufAny: additionalProperties: true description: >- Contains an arbitrary serialized message along with a @type that describes the type of the serialized message. properties: '@type': description: The type of the serialized message. type: string type: object securitySchemes: ApiKeyAuth: in: header name: X-API-Key type: apiKey ````