> ## 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. # Screen a blockchain address > Assesses the AML risk of a blockchain address (sanctioned entity, illicit-fund exposure) against global on-chain intelligence and returns a normalized risk level (Low/Medium/High/Severe) with the full evidence. Network-agnostic: the address is evaluated across every supported chain at once; `chain` only labels your record. Bills the fixed `address_screening` fee (refunded automatically if the screening fails), so `idempotency_key` is required — replaying with the same key returns the original screening with `idempotency_hit: true` and never charges twice. Requires the `screenings` service enabled and an approved account verification. ## OpenAPI ````yaml /openapi.yaml post /v1/screenings/addresses 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/screenings/addresses: post: tags: - Wallet screening summary: Screen a blockchain address description: >- Assesses the AML risk of a blockchain address (sanctioned entity, illicit-fund exposure) against global on-chain intelligence and returns a normalized risk level (Low/Medium/High/Severe) with the full evidence. Network-agnostic: the address is evaluated across every supported chain at once; `chain` only labels your record. Bills the fixed `address_screening` fee (refunded automatically if the screening fails), so `idempotency_key` is required — replaying with the same key returns the original screening with `idempotency_hit: true` and never charges twice. Requires the `screenings` service enabled and an approved account verification. operationId: createAddressScreening requestBody: required: true content: application/json: schema: type: object required: - address - idempotency_key properties: address: type: string description: Blockchain address to screen (max 128 characters). chain: type: string description: >- Optional label (tron, eth, ...) for your record; it does not restrict the assessment. idempotency_key: type: string description: >- Required (the scan charges a fee). Also accepted as the Idempotency-Key header. example: address: TN2BBWc9EF8MMB6i1c4HZHXAssTEXstMDo chain: tron idempotency_key: scan-customer-742-1 responses: '200': description: >- Idempotent replay — returns the original screening without charging again. content: application/json: example: screening_id: 5f0b1c9a-2f3e-4a7b-9c1d-8e6f5a4b3c2d account_id: 9b1deb4d-3b7d-4bad-9bdd-2b0d7b3dcb6d address: TN2BBWc9EF8MMB6i1c4HZHXAssTEXstMDo chain: tron risk: Low screening_fee: '0.500000' fee_asset: USDT idempotency_key: scan-customer-742-1 created_at: '2026-07-12T14:30:00Z' idempotency_hit: true '201': description: Screening executed and stored. content: application/json: examples: low_risk: summary: Clean address value: screening_id: 5f0b1c9a-2f3e-4a7b-9c1d-8e6f5a4b3c2d account_id: 9b1deb4d-3b7d-4bad-9bdd-2b0d7b3dcb6d address: TN2BBWc9EF8MMB6i1c4HZHXAssTEXstMDo chain: tron risk: Low screening_fee: '0.500000' fee_asset: USDT idempotency_key: scan-customer-742-1 created_at: '2026-07-12T14:30:00Z' assessment: address: TN2BBWc9EF8MMB6i1c4HZHXAssTEXstMDo risk: Low address_identifications: [] exposures: - category: exchange value_usd: '1250.75' triggers: [] severe_risk: summary: Sanctioned address value: screening_id: 7a2c4e6f-8b1d-4c3a-9e5f-1a2b3c4d5e6f account_id: 9b1deb4d-3b7d-4bad-9bdd-2b0d7b3dcb6d address: '0x098B716B8Aaf21512996dC57EB0615e2383E2f96' chain: eth risk: Severe risk_reason: Identified as Sanctioned Entity screening_fee: '0.500000' fee_asset: USDT idempotency_key: scan-suspicious-9 created_at: '2026-07-12T14:31:00Z' assessment: address: '0x098B716B8Aaf21512996dC57EB0615e2383E2f96' risk: Severe risk_reason: Identified as Sanctioned Entity cluster_name: OFAC SDN Ronin Bridge Exploiter cluster_category: sanctioned entity address_identifications: - name: 'SANCTIONS: OFAC SDN Ronin Bridge Exploiter' category: sanctioned entity exposures: [] triggers: [] '400': $ref: '#/components/responses/BadRequest' '401': $ref: '#/components/responses/Unauthorized' '402': $ref: '#/components/responses/InsufficientFunds' '403': $ref: '#/components/responses/Forbidden' '422': description: The address could not be screened (check the format). content: application/json: example: error: invalid_address message: the address could not be screened (check the format) '502': description: >- Screening temporarily unavailable (the fee was refunded). Retry with the SAME key. content: application/json: example: error: screening_unavailable message: address screening temporarily unavailable components: responses: BadRequest: description: Invalid request (see `error` code for the specific validation). content: application/json: schema: $ref: '#/components/schemas/Error' example: error: invalid_json message: 'request body is not valid JSON: unknown field' Unauthorized: description: Missing or invalid credential (`unauthorized`). content: application/json: schema: $ref: '#/components/schemas/Error' example: error: unauthorized message: invalid or missing credentials InsufficientFunds: description: Account balance is not enough for this operation (`insufficient_funds`). content: application/json: schema: $ref: '#/components/schemas/Error' example: error: insufficient_funds message: account balance is not enough for this operation Forbidden: description: Credential level not allowed for this endpoint (`forbidden`). content: application/json: schema: $ref: '#/components/schemas/Error' example: error: forbidden message: credentials required 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. ````