> ## Documentation Index > Fetch the complete documentation index at: https://docs.cbpayapp.com/llms.txt > Use this file to discover all available pages before exploring further. # Refresh the session > Exchanges a single-use refresh token (`rt_…`, issued with every login) for a fresh access token + refresh token pair without asking for credentials again. Strict rotation: the previous access token of that device is revoked on exchange, and presenting an already-exchanged refresh token revokes the device's entire token chain (theft response) and records a `refresh_token_reuse` security event. Refresh tokens last 30 days per rotation with an absolute cap of 90 days from the original login; signing out, revoking sessions or changing the password also invalidates them. ## OpenAPI ````yaml /openapi.yaml post /v1/auth/refresh openapi: 3.1.0 info: title: CBPay API version: '1.89' description: | CBPay is a multi-currency payment platform: fiat payouts and collections across Latin America, internal transfers, on-chain funding and withdrawals, and KYC screening. Every account holds four independent virtual balances — USDT (the operating currency), USDC, BTC and GOLD (grams of fine gold) — that never mix or convert automatically. Payouts and service fees can be paid from any of the four balances: set a default with `PUT /v1/settlement` or override per payout with `settlement_asset`. All amounts are decimal strings in each currency's precision (6 decimals for USDT/USDC/GOLD, 8 for BTC). Errors always return `{"error": "", "message": ""}`. servers: - url: https://api.qbank.cl/platform description: Live (production, real money) - url: https://cryptobank.qbank.cl/platform description: Test (sandbox, simulated money — pk_test_ keys) security: - bearerAuth: [] tags: - name: Receipts description: >- Branded PDF receipt per operation, with a public signed-QR authenticity check, receipt_url on every response/webhook and automatic email delivery on final states. - name: Authentication description: Register and log in account members. Sessions last 24 hours. - name: Account description: Profile, members and API keys of the calling account. - name: Balances description: Balances, movement history and FX rates. - name: Payouts description: >- Fiat dispersals debited from the settlement balance of your choice (USDT by default). - name: Payins description: Fiat top-ups credited to the USDT balance. - name: Transfers - name: Contacts - name: Swaps description: >- Free internal transfers between CBPay accounts (person or company, any combination). - name: Crypto description: On-chain funding and withdrawals (TRON, Ethereum and Bitcoin). - name: Segregated wallets description: >- On-chain wallets with their own balance (companies unlimited; persons 1 per network+asset pair) — create, import, send, export the private key and auto-forward. The balance lives on-chain, never in the ledger. - name: QR Crypto POS description: >- Amount-bearing crypto QR charges for processors with physical POS terminals (company accounts): verified merchants, exclusive address + QR per charge, early payment detection, per-merchant reconciliation and refunds over the crypto withdrawal rail. - name: KYC / KYB - name: AML screening description: >- Identity verification: KYC for persons, KYB for companies, with AML screening, rescreening and continuous monitoring. - name: Wallet screening description: >- AML risk assessment of blockchain addresses (sanctions, illicit-fund exposure) with a per-scan fee, plus free automatic protection on withdrawals and deposits. - name: Analytics - name: Webhooks description: Subscriptions to receive signed event notifications. - name: Status description: Service availability. - name: Banking description: >- Real bank accounts: receive, hold and send money over international banking rails. - name: Cards description: >- Virtual and physical cards that spend Just-In-Time from the account's USDT balance, with per-card spending limits. - name: Security (OTP) description: >- One-time verification codes over SMS/WhatsApp/email protecting sensitive actions, plus self-service 2FA preferences. Applies to user sessions only — API keys are exempt. - name: Passkeys description: >- Passwordless sign-in with the device's biometrics (Face ID, Touch ID, Windows Hello, security keys) via WebAuthn, authenticator apps (TOTP) with backup codes, and session/device management. - name: Social login description: >- Passwordless sign up and sign in with Google, Apple, Microsoft and Facebook via token exchange. The front end obtains the provider credential; the API verifies it and issues the CBPay session. paths: /v1/auth/refresh: post: tags: - Authentication summary: Refresh the session description: >- Exchanges a single-use refresh token (`rt_…`, issued with every login) for a fresh access token + refresh token pair without asking for credentials again. Strict rotation: the previous access token of that device is revoked on exchange, and presenting an already-exchanged refresh token revokes the device's entire token chain (theft response) and records a `refresh_token_reuse` security event. Refresh tokens last 30 days per rotation with an absolute cap of 90 days from the original login; signing out, revoking sessions or changing the password also invalidates them. operationId: refreshSession requestBody: required: true content: application/json: schema: type: object required: - refresh_token properties: refresh_token: type: string description: The `rt_…` token from the last login or refresh. example: refresh_token: >- rt_6a1e6c22-93a1-4f0e-a7d1-1f2e3c4b5a69.XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX responses: '200': description: New pair issued; the previous pair is now invalid. content: application/json: schema: type: object properties: access_token: type: string expires_at: type: string format: date-time refresh_token: type: string description: Replaces the exchanged token (single use). refresh_expires_at: type: string format: date-time account_id: type: string format: uuid role: type: string example: access_token: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9… expires_at: '2026-07-15T12:00:00Z' refresh_token: >- rt_9f2b1c30-51ab-4dd0-93e2-7a6b5c4d3e2f.YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY refresh_expires_at: '2026-08-13T12:00:00Z' account_id: 9b1deb4d-3b7d-4bad-9bdd-2b0d7b3dcb6d role: owner '401': description: >- The refresh token is invalid, expired, already used or revoked (`invalid_refresh_token`). Send the user back to the login screen. content: application/json: schema: $ref: '#/components/schemas/Error' example: error: invalid_refresh_token message: the refresh token is invalid or expired; log in again '429': description: Too many refresh attempts from this address (`too_many_attempts`). content: application/json: schema: $ref: '#/components/schemas/Error' example: error: too_many_attempts message: too many refresh attempts from this address; retry later security: [] components: schemas: Error: type: object properties: error: type: string description: Machine-readable error code (snake_case). example: insufficient_funds message: type: string description: Human-readable explanation. securitySchemes: bearerAuth: type: http scheme: bearer description: | Session JWT (from register/login) or API key (`pk_...`). `X-API-Key: ` is accepted as an alternative header. ````