> ## Documentation Index > Fetch the complete documentation index at: https://docs.initia.xyz/llms.txt > Use this file to discover all available pages before exploring further. # Compute Route > This is the first step when bridging tokens between chains. Call this endpoint with your source and destination assets to find the optimal transfer route. The response includes the expected output amount, USD value estimates, and an ordered list of operations. After receiving a route, pass the full response (including `operations`) to the Generate Transaction endpoint (`POST /v2/fungible/msgs`) to get signable transaction messages you can broadcast. ## OpenAPI ````yaml /api-reference/router-api/openapi.yaml post /v2/fungible/route openapi: 3.1.0 info: title: Router API description: Cross-chain transfer routing API for the Initia ecosystem. version: 1.0.0 servers: - url: https://router-api.initia.xyz description: Mainnet - url: https://router-api.initiation-2.initia.xyz description: Testnet security: [] paths: /v2/fungible/route: post: tags: - Routing summary: Compute Route description: >- This is the first step when bridging tokens between chains. Call this endpoint with your source and destination assets to find the optimal transfer route. The response includes the expected output amount, USD value estimates, and an ordered list of operations. After receiving a route, pass the full response (including `operations`) to the Generate Transaction endpoint (`POST /v2/fungible/msgs`) to get signable transaction messages you can broadcast. operationId: computeRoute requestBody: required: true content: application/json: schema: type: object required: - amount_in - source_asset_chain_id - source_asset_denom - dest_asset_chain_id - dest_asset_denom properties: amount_in: type: string description: >- Amount to send in the smallest denomination (e.g. "1000000" for 1 INIT). source_asset_chain_id: type: string description: Source chain ID. source_asset_denom: type: string description: Source asset denomination. dest_asset_chain_id: type: string description: Destination chain ID. dest_asset_denom: type: string description: Destination asset denomination. allow_unsafe: type: boolean default: true description: Allow routes that may have higher risk. go_fast: type: boolean description: Use Go Fast bridging. Automatically determined if not set. is_op_withdraw: type: boolean description: Force an Optimistic withdrawal route. example: amount_in: '1000000' source_asset_chain_id: interwoven-1 source_asset_denom: uinit dest_asset_chain_id: '8453' dest_asset_denom: 0x... allow_unsafe: true responses: '200': description: Successful response content: application/json: schema: type: object properties: amount_in: type: string description: Input amount. amount_out: type: string description: Expected output amount. source_asset_chain_id: type: string description: Source chain ID. source_asset_denom: type: string description: Source asset denom. dest_asset_chain_id: type: string description: Destination chain ID. dest_asset_denom: type: string description: Destination asset denom. operations: type: array description: Ordered list of transfer operations to execute. items: type: object required_chain_addresses: type: array description: >- All chain IDs that require an address, in order of usage by operations in the route. Use this to populate the address_list parameter in the Generate Transaction request. items: type: string chain_ids: type: array description: Ordered list of all chain IDs involved in the route. items: type: string does_swap: type: boolean description: Whether the route involves a token swap. estimated_amount_out: type: string description: >- Estimated output amount before fees and slippage adjustments. estimated_fees: type: array description: >- Estimated fees for the route. Each entry describes a fee with its amount, behavior, and the originating asset. items: type: object properties: amount: type: string description: Fee amount in the smallest denomination. fee_behavior: type: string description: >- How the fee is applied (e.g. FEE_BEHAVIOR_ADDITIONAL, FEE_BEHAVIOR_DEDUCTED). origin_asset: type: object description: The asset in which the fee is denominated. properties: denom: type: string chain_id: type: string usd_amount: type: string nullable: true description: USD value of the fee, if available. estimated_route_duration_seconds: type: integer nullable: true description: Estimated time in seconds for the route to complete. txs_required: type: integer description: Number of transactions required to execute the route. swap_venues: type: array description: DEX venues used for swaps in the route, if any. items: type: object properties: name: type: string description: Swap venue name. chain_id: type: string description: Chain ID where the swap occurs. logo_uri: type: string description: URL to the swap venue logo. swap_venue: type: object description: Primary DEX venue used for the route's swap. properties: name: type: string description: Swap venue name. chain_id: type: string description: Chain ID where the swap occurs. logo_uri: type: string description: URL to the swap venue logo. swap_price_impact_percent: type: string description: Estimated price impact percentage for the swap. usd_amount_in: type: string description: USD value of the input amount. usd_amount_out: type: string description: USD value of the output amount. warning: type: object nullable: true description: Price impact warning (present when impact exceeds 5%). properties: type: type: string description: Warning type (e.g. BAD_PRICE_WARNING). message: type: string description: Human-readable warning message. extra_warnings: type: array nullable: true description: >- Additional warning messages for the route, such as withdrawal duration notices. items: type: string required_op_hook: type: boolean description: Whether an OP hook is required for this route. example: amount_in: '1000000' amount_out: '999000' source_asset_chain_id: interwoven-1 source_asset_denom: uinit dest_asset_chain_id: '8453' dest_asset_denom: 0x... operations: [] required_chain_addresses: - interwoven-1 - '8453' chain_ids: - interwoven-1 - '8453' does_swap: false estimated_amount_out: '999000' estimated_fees: [] estimated_route_duration_seconds: 60 txs_required: 1 swap_venues: [] usd_amount_in: '1.50' usd_amount_out: '1.49' warning: null extra_warnings: null required_op_hook: false ````