> ## 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. # Transfer tokens as a delegate > Builds a transaction to transfer tokens from one address to another using the delegate's approval. The response format differs between EVM and Solana chains. ## OpenAPI ````yaml /openapi/client-api.yaml post /clients/me/chains/{chain}/assets/{token}/delegations/transfers 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: 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/chains/{chain}/assets/{token}/delegations/transfers: post: tags: - Delegations summary: Transfer tokens as a delegate description: > Builds a transaction to transfer tokens from one address to another using the delegate's approval. The response format differs between EVM and Solana chains. operationId: transferAsDelegate parameters: - $ref: '#/components/parameters/chain' - $ref: '#/components/parameters/token' requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/TransferAsDelegateRequest' example: fromAddress: '0x54968898742c08da211a1cd355447cd1f37f0649' toAddress: '0xdFd8302f44727A6348F702fF7B594f127dE3A902' amount: '50' responses: '200': description: > Delegated transfer transaction built successfully. Response format depends on the chain type. content: application/json: schema: oneOf: - $ref: '#/components/schemas/DelegationTransactionEvmResponse' - $ref: '#/components/schemas/DelegationTransactionSolanaResponse' examples: evm: summary: EVM delegated transfer value: transactions: - from: '0x54968898742c08da211a1cd355447cd1f37f0649' to: '0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48' data: 0x23b872dd000000000000000000000000... metadata: amount: '50' amountRaw: '50000000' chainId: eip155:1 delegateAddress: '0x54968898742c08da211a1cd355447cd1f37f0649' ownerAddress: '0x54968898742c08da211a1cd355447cd1f37f0649' recipientAddress: '0xdFd8302f44727A6348F702fF7B594f127dE3A902' tokenAddress: '0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48' tokenSymbol: USDC tokenDecimals: 6 solana: summary: Solana delegated transfer value: encodedTransactions: - 4c5ErVEQWyXMS... metadata: amount: '50' amountRaw: '50000000' chainId: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp delegateAddress: 7EC5TEEAcDseLH6PyqKkPiBasVnsdmrRbRHjN3zkkHFW ownerAddress: 7EC5TEEAcDseLH6PyqKkPiBasVnsdmrRbRHjN3zkkHFW recipientAddress: 8APEEA4SHrfGteABQcUmH2yEHy7nEe8DqgvmKGAStHR tokenSymbol: USDC tokenDecimals: 6 lastValidBlockHeight: '260129177' needsRecipientTokenAccount: false serializedTransactionBase58Encoded: 4c5ErVEQWyXMS... serializedTransactionBase64Encoded: AQAAAAAAAAAA... '400': description: >- Bad request - invalid addresses, amount, or insufficient delegation allowance content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '401': description: Unauthorized - invalid or missing authentication token content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' components: parameters: chain: name: chain in: path required: true description: > The blockchain chain identifier. Use either a friendly name or CAIP-2 format. When using CAIP-2 format in URLs, ensure the colon (`:`) is URI-encoded as `%3A`. **Supported chains:** - `ethereum` (`eip155:1`) - `sepolia` (`eip155:11155111`) - `base` (`eip155:8453`) - `base-sepolia` (`eip155:84532`) - `polygon` (`eip155:137`) - `polygon-mumbai` (`eip155:80001`) - `celo` (`eip155:42220`) - `celo-alfajores` (`eip155:44787`) - `monad` (`eip155:143`) - `monad-testnet` (`eip155:10143`) - `solana` (`solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp`) - `solana-devnet` (`solana:EtWTRABZaYq6iMfeYKouRu166VU2xqa1`) - `tron` (`tron:mainnet`) - `tron-nile` (`tron:nile`) - `tron-shasta` (`tron:shasta`) - `stellar` (`stellar:pubnet`) - `stellar-testnet` (`stellar:testnet`) - `bitcoin-segwit` (`bip122:000000000019d6689c085ae165831e93-p2wpkh`) - `bitcoin-segwit-testnet` (`bip122:000000000933ea01ad0ee984209779ba-p2wpkh`) - `bitcoin-p2wpkh` (`bip122:000000000019d6689c085ae165831e93-p2wpkh`) - `bitcoin-p2wpkh-testnet` (`bip122:000000000933ea01ad0ee984209779ba-p2wpkh`) schema: type: string examples: ethereum: value: ethereum summary: Ethereum mainnet (friendly name) eip155: value: eip155:1 summary: Ethereum mainnet (CAIP-2) solana: value: solana summary: Solana mainnet (friendly name) bitcoin: value: bitcoin-segwit summary: Bitcoin segwit (friendly name) token: name: token in: path required: true description: > The token symbol (e.g. `USDC`, `ETH`) or contract/mint address on the specified chain. schema: type: string examples: symbol: value: USDC summary: Token symbol contractAddress: value: '0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48' summary: ERC-20 contract address schemas: TransferAsDelegateRequest: type: object required: - fromAddress - toAddress - amount properties: fromAddress: type: string description: The address to transfer tokens from (the token owner). toAddress: type: string description: The address to transfer tokens to. amount: type: string description: The amount to transfer. Must be greater than zero. DelegationTransactionEvmResponse: type: object description: Delegation transaction response for EVM chains. properties: transactions: type: array items: type: object properties: from: type: string description: Sender's address. to: type: string description: Contract address. data: type: string description: Encoded function call data. value: type: string description: Hex-encoded value in wei. description: Array of unsigned transactions to sign and submit. metadata: type: object description: > Transaction metadata. Fields vary depending on the operation (approval, revocation, or transfer). additionalProperties: true DelegationTransactionSolanaResponse: type: object description: Delegation transaction response for Solana chains. properties: encodedTransactions: type: array items: type: string description: Array of encoded Solana transactions. metadata: type: object description: > Transaction metadata. Fields vary depending on the operation. May include `lastValidBlockHeight`, `serializedTransactionBase58Encoded`, and other Solana-specific fields. additionalProperties: true ErrorResponse: type: object properties: error: type: string description: Error message describing what went wrong securitySchemes: bearerAuth: type: http scheme: bearer description: > Client API Key or Client Session Token (CST). Pass as a Bearer token in the Authorization header. ````