> ## 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.

# Get a payer (self-signup buyer) detail

> Fetch one self-signup payer (buyer) by id, scoped to the caller org + mode via the org<->buyer billing relationship. Returns identity, KYC status, and the relationship stats (first/last invoiced, invoice count). Returns 404 for a buyer that has never transacted with your org — cross-org buyers are never leaked. Payers have no payout config (they do not collect).



## OpenAPI

````yaml https://api.caratuva.com/docs-json get /v1/customers/payer/{id}
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:
  - name: Invoices
    description: Create and manage invoices that collect for one of your sellers.
  - name: Payments
    description: Create a payment (keep your own checkout), fetch it, or cancel it.
  - name: Accounts
    description: >-
      Onboard and manage your sellers, buyers, and your own (self) account at
      the settlement partner.
  - name: Webhooks
    description: Subscribe to outbound event notifications and manage signing secrets.
  - name: API keys
    description: Issue, list, and revoke the API keys that authenticate your integration.
  - name: Access
    description: Request and check production (live-mode) access for your organization.
  - name: Reports
    description: Pull settlement and transfer-pricing reports.
paths:
  /v1/customers/payer/{id}:
    get:
      tags:
        - Accounts
      summary: Get a payer (self-signup buyer) detail
      description: >-
        Fetch one self-signup payer (buyer) by id, scoped to the caller org +
        mode via the org<->buyer billing relationship. Returns identity, KYC
        status, and the relationship stats (first/last invoiced, invoice count).
        Returns 404 for a buyer that has never transacted with your org —
        cross-org buyers are never leaked. Payers have no payout config (they do
        not collect).
      operationId: CustomersController_payerDetail
      parameters:
        - name: id
          required: true
          in: path
          schema:
            type: string
      responses:
        '200':
          description: Payer detail
          content:
            application/json:
              schema:
                type: object
                properties:
                  id:
                    type: string
                  email:
                    type: string
                  name:
                    type: string
                    nullable: true
                  entityType:
                    type: string
                    enum:
                      - individual
                      - business
                  country:
                    type: string
                    nullable: true
                  kycStatus:
                    type: string
                  receiverId:
                    type: string
                    nullable: true
                  firstInvoicedAt:
                    type: string
                    nullable: true
                  lastInvoicedAt:
                    type: string
                    nullable: true
                  invoiceCount:
                    type: integer
                required:
                  - id
                  - email
                  - name
                  - entityType
                  - country
                  - kycStatus
                  - receiverId
                  - firstInvoicedAt
                  - lastInvoicedAt
                  - invoiceCount
                additionalProperties: false
              examples:
                default:
                  value:
                    id: ckbuy042
                    email: pagador@empresa.com.br
                    name: Empresa Pagadora LTDA
                    entityType: business
                    country: BR
                    kycStatus: approved
                    receiverId: rc_9b4c1d20
                    firstInvoicedAt: '2026-05-01T12:00:00.000Z'
                    lastInvoicedAt: '2026-06-30T12:00:00.000Z'
                    invoiceCount: 7
        '404':
          description: NotFound — No payer with that id for your org + mode.
          content:
            application/json:
              schema:
                type: object
                properties:
                  statusCode:
                    type: integer
                    example: 404
                  error:
                    type: string
                    example: NotFound
                  message:
                    type: string
                    example: No payer with that id for your org + mode.
      security:
        - apiKey: []
        - bearer: []
components:
  securitySchemes:
    apiKey:
      type: apiKey
      in: header
      name: X-API-Key
    bearer:
      scheme: bearer
      bearerFormat: JWT
      type: http

````