> ## Documentation Index > Fetch the complete documentation index at: https://docs.portalhq.io/llms.txt > Use this file to discover all available pages before exploring further. # Create recipient > Creates a recipient. For onchain recipients, pass a CAIP-2 `chainId` and omit the address to default it to the client's Portal wallet. For a fiat beneficiary, set `isExternal: true` and provide the bank `details`. ## OpenAPI ````yaml /openapi/client-api.yaml post /clients/me/integrations/due/recipients openapi: 3.1.0 info: title: Portal Client API version: '3.0' description: > The Portal Client API provides endpoints for managing wallets, building transactions, and interacting with blockchain networks. All endpoints require authentication via a Client API Key or Client Session Token (CST) passed as a Bearer token. ## Base URL `https://api.portalhq.io/api/v3` ## Authentication Include your Client API Key or Client Session Token as a Bearer token in the `Authorization` header of every request. ## Chain ID Format Chain parameters use either friendly names (e.g. `ethereum`, `solana`) or CAIP-2 format (e.g. `eip155:1`, `solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp`). When using CAIP-2 format in URLs, ensure the colon is URI-encoded (`%3A`). servers: - url: https://api.portalhq.io/api/v3 description: Production security: - bearerAuth: [] tags: - name: Clients description: Core client management endpoints - name: Wallet description: >- Read wallet state — balances, NFTs, transaction history, capabilities, and transaction details - name: Transactions description: Build, broadcast, and evaluate blockchain transactions - name: Funding description: Fund wallets with testnet tokens - name: Wallet Shares description: Manage signing and backup share pairs - name: Delegations description: Manage token approvals, revocations, and delegated transfers - name: Session Keys description: Manage EIP-7702 session keys for smart accounts - name: 0x description: Token swap endpoints powered by the 0x protocol - name: Yield.xyz description: Yield opportunities and staking actions powered by Yield.xyz - name: Li.Fi description: Cross-chain swaps and bridging powered by Li.Fi - name: Blockaid description: Transaction and address security scanning powered by Blockaid - name: Hypernative description: >- Transaction, address, token, and NFT security scanning powered by Hypernative - name: Noah description: KYC onboarding, payins, and payouts powered by Noah - name: Meld description: Buy and sell crypto with fiat through aggregated providers powered by Meld - name: Due description: Payins, payouts, virtual accounts, and FX powered by Due - name: EIP-7702 description: EIP-7702 account type detection and authorization management - name: Deprecated description: >- Legacy endpoints scheduled for removal. Use the newer equivalents listed in each endpoint's description. paths: /clients/me/integrations/due/recipients: post: tags: - Due summary: Create recipient description: | Creates a recipient. For onchain recipients, pass a CAIP-2 `chainId` and omit the address to default it to the client's Portal wallet. For a fiat beneficiary, set `isExternal: true` and provide the bank `details`. operationId: createDueRecipient parameters: - name: Idempotency-Key in: header required: false schema: type: string description: Optional key to deduplicate retries. requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/DueRecipientCreateRequest' responses: '200': description: Recipient created content: application/json: schema: $ref: '#/components/schemas/DueRecipientResponse' '400': description: Bad request content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '401': description: Unauthorized content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '409': description: Recipient already exists content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' components: schemas: DueRecipientCreateRequest: type: object required: - name - details properties: name: type: string details: type: object additionalProperties: true description: > Recipient details. For onchain recipients, `schema` and `address` are defaulted from `chainId` when omitted; provide them explicitly for an external wallet. For fiat beneficiaries, include the bank schema and account fields. properties: address: type: string description: | The recipient address as a string in the chain's native format: `0x`-hex for EVM, base58 for Solana, base58check for Tron. schema: type: string description: > Due recipient schema. For onchain recipients one of `evm`, `solana`, `tron`; for fiat, the bank schema (for example `bank_us`, `bank_sepa`). chainId: type: string description: >- CAIP-2 chain id used to default an onchain recipient's schema and address. isExternal: type: boolean description: >- Set true for external wallets and fiat beneficiaries; disables Portal-wallet defaulting. DueRecipientResponse: type: object properties: data: $ref: '#/components/schemas/DueRecipient' ErrorResponse: type: object properties: error: type: string description: Error message describing what went wrong DueRecipient: type: object additionalProperties: true required: - id properties: id: type: string label: type: string details: type: object additionalProperties: true isExternal: type: boolean isActive: type: boolean isValid: type: boolean securitySchemes: bearerAuth: type: http scheme: bearer description: > Client API Key or Client Session Token (CST). Pass as a Bearer token in the Authorization header. ````