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

# Buyer-session: mint a signed PUT URL for a KYC file (selfie or ID document). The buyer-portal PUTs the file to uploadUrl with uploadHeaders, then sends publicUrl in the /buyer-kyc submit.



## OpenAPI

````yaml https://api.caratuva.com/docs-json post /v1/public/buyer-kyc/upload-url
openapi: 3.0.0
info:
  title: Caratuva API
  description: >-
    Cross-border B2B payments. Fiat on-ramp → USDC → PIX off-ramp.


    Every request runs in **test** or **live** mode on this single host — there
    is no separate sandbox URL. API keys carry the mode in their prefix
    (`pk_test_…` / `pk_live_…`); dashboard JWTs start in test and re-mint via
    `POST /v1/auth/switch-mode`. Test mode runs the full pipeline against a
    sandbox payment instance (KYB/KYC auto-approve, no real money); live runs on
    real rails and requires approved KYB. Test and live data are fully isolated.
    Check readiness with `GET /v1/onboarding/status`.
  version: 1.0.0
  contact: {}
servers: []
security: []
tags: []
paths:
  /v1/public/buyer-kyc/upload-url:
    post:
      tags:
        - buyer-kyc
      summary: >-
        Buyer-session: mint a signed PUT URL for a KYC file (selfie or ID
        document). The buyer-portal PUTs the file to uploadUrl with
        uploadHeaders, then sends publicUrl in the /buyer-kyc submit.
      operationId: BuyerKycPublicController_uploadUrl
      parameters: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateBuyerKycUploadUrlDto'
      responses:
        '201':
          description: Signed upload URL minted
components:
  schemas:
    CreateBuyerKycUploadUrlDto:
      type: object
      properties: {}

````