> ## 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. # List CCTP routes > Lists the chains you can move USDC between with CCTP: EVM chains and Solana. Any listed chain can be the source or the destination, as long as both are on the same `network` (mainnet or testnet) and they're different chains. ## OpenAPI ````yaml /openapi/client-api.yaml get /clients/me/integrations/cctp/routes 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: Yield.xyz Borrow description: >- Supply collateral, borrow, repay and withdraw from lending markets (Aave V3, Morpho Blue, SparkLend, Lista) powered by Yield.xyz Borrow - name: Yield.xyz Perps description: >- Trade perpetual futures — open/close leveraged positions, manage stop-loss/take-profit, and fund/withdraw a trading account — powered by Yield.xyz Perps - name: Li.Fi description: Cross-chain swaps and bridging powered by Li.Fi - name: CCTP description: >- Crosschain USDC transfers powered by Circle's Cross-Chain Transfer Protocol (CCTP) - 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/cctp/routes: get: tags: - CCTP summary: List CCTP routes description: > Lists the chains you can move USDC between with CCTP: EVM chains and Solana. Any listed chain can be the source or the destination, as long as both are on the same `network` (mainnet or testnet) and they're different chains. operationId: getCctpRoutes responses: '200': description: Supported chains content: application/json: schema: $ref: '#/components/schemas/CctpRoutesResponse' example: data: chains: - chainId: eip155:84532 name: Base Sepolia domain: 6 network: testnet namespace: eip155 usdcAddress: '0x036CbD53842c5426634e7929541eC2318f3dCF7e' canSend: true canReceive: true fastTransfer: true estimatedSeconds: fast: 8 standard: 1080 - chainId: eip155:43113 name: Avalanche Fuji domain: 1 network: testnet namespace: eip155 usdcAddress: '0x5425890298aed601595a70AB815c96711a31Bc65' canSend: true canReceive: true fastTransfer: false estimatedSeconds: fast: null standard: 8 - chainId: solana:EtWTRABZaYq6iMfeYKouRu166VU2xqa1 name: Solana Devnet domain: 5 network: testnet namespace: solana usdcAddress: 4zMMC9srt5Ri5X14GAgXhaHii3GnPAEERYPJgZJDncDU canSend: true canReceive: true fastTransfer: false estimatedSeconds: fast: null standard: 25 '400': description: >- The CCTP integration isn't enabled for this environment (`CCTP_NOT_ENABLED`). content: application/json: schema: $ref: '#/components/schemas/CctpErrorResponse' example: error: >- Enable the CCTP integration on the Portal Dashboard to use this endpoint id: CCTP_NOT_ENABLED '401': description: Unauthorized content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' components: schemas: CctpRoutesResponse: type: object properties: data: type: object properties: chains: type: array items: $ref: '#/components/schemas/CctpRouteChain' CctpErrorResponse: type: object required: - error properties: error: type: string id: type: string enum: - CCTP_NOT_ENABLED - INVALID_AMOUNT - IDEMPOTENCY_KEY_REUSED - CCTP_REBUILD_UNAVAILABLE - CCTP_REBUILD_TOO_SOON - ALREADY_SUBMITTED description: Stable error id. Absent on malformed request errors. details: type: object additionalProperties: true ErrorResponse: type: object properties: error: type: string description: Error message describing what went wrong CctpRouteChain: type: object properties: chainId: type: string description: CAIP-2 chain id. example: eip155:11155111 name: type: string example: Ethereum Sepolia domain: type: integer description: Circle's domain id for the chain. Not the EVM chain id. example: 0 network: type: string enum: - mainnet - testnet description: Source and destination must be on the same network. namespace: type: string enum: - eip155 - solana description: '`eip155` for EVM chains, `solana` for Solana.' usdcAddress: type: string description: The USDC contract on an EVM chain, or the USDC mint on Solana. canSend: type: boolean canReceive: type: boolean fastTransfer: type: boolean description: Whether Fast is available with this chain as the source. estimatedSeconds: type: object description: Estimated transfer time with this chain as the source. properties: fast: type: integer nullable: true description: '`null` when Fast isn''t available from this chain.' standard: type: integer securitySchemes: bearerAuth: type: http scheme: bearer description: > Client API Key or Client Session Token (CST). Pass as a Bearer token in the Authorization header. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.