> ## Documentation Index
> Fetch the complete documentation index at: https://docs.heyhumm.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Presign Uploads

> Return presigned S3 PUT URLs for direct browser upload.



## OpenAPI

````yaml https://analyst.heyhumm.ai/api/openapi.json post /api/upload/presign
openapi: 3.1.0
info:
  title: Analyst API
  description: API for the Analyst service with proper organization-scoped permissions
  version: 1.0.0
servers:
  - url: https://analyst.heyhumm.ai
security: []
paths:
  /api/upload/presign:
    post:
      tags:
        - uploads
      summary: Presign Uploads
      description: Return presigned S3 PUT URLs for direct browser upload.
      operationId: presign_uploads_api_upload_presign_post
      parameters:
        - name: organization_id
          in: query
          required: true
          schema:
            type: string
            title: Organization Id
        - name: thread_id
          in: query
          required: true
          schema:
            type: string
            title: Thread Id
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PresignRequest'
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PresignResponse'
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
      security:
        - HTTPBearer: []
components:
  schemas:
    PresignRequest:
      properties:
        files:
          items:
            $ref: '#/components/schemas/FilePresignItem'
          type: array
          title: Files
      additionalProperties: false
      type: object
      required:
        - files
      title: PresignRequest
    PresignResponse:
      properties:
        uploads:
          items:
            $ref: '#/components/schemas/PresignedUpload'
          type: array
          title: Uploads
      type: object
      required:
        - uploads
      title: PresignResponse
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
    FilePresignItem:
      properties:
        filename:
          type: string
          title: Filename
        content_type:
          type: string
          title: Content Type
        size_bytes:
          type: integer
          exclusiveMinimum: 0
          title: Size Bytes
      additionalProperties: false
      type: object
      required:
        - filename
        - content_type
        - size_bytes
      title: FilePresignItem
    PresignedUpload:
      properties:
        filename:
          type: string
          title: Filename
        s3_key:
          type: string
          title: S3 Key
        presigned_url:
          type: string
          title: Presigned Url
        content_type:
          type: string
          title: Content Type
      type: object
      required:
        - filename
        - s3_key
        - presigned_url
        - content_type
      title: PresignedUpload
    ValidationError:
      properties:
        loc:
          items:
            anyOf:
              - type: string
              - type: integer
          type: array
          title: Location
        msg:
          type: string
          title: Message
        type:
          type: string
          title: Error Type
      type: object
      required:
        - loc
        - msg
        - type
      title: ValidationError
  securitySchemes:
    HTTPBearer:
      type: http
      scheme: bearer

````