api-docs-openapi.yaml

openapi: "3.0.0"
info:
  title: Across Protocol API
  description: API documentation for Across Protocol services.
  version: 0.1.0
servers:
  - url: https://app.across.to/api
  - url: https://testnet.across.to/api
paths:
  /suggested-fees:
    get:
      x-codeSamples:
        - lang: bash
          label: Curl
          source: >
            curl -L \
              'https://app.across.to/api/suggested-fees?inputToken=0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2&outputToken=0x4200000000000000000000000000000000000006&originChainId=1&destinationChainId=10&amount=1000000000000000000'
      summary: Retrieve suggested fee quote for a deposit.
      description: >
        Returns suggested fees based `inputToken`+`outputToken`, `originChainId`, `destinationChainId`, and
        `amount`. Also includes data used to compute the fees.
      parameters:
        - name: inputToken
          in: query
          required: true
          schema:
            type: string
            examples:
              - "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2"
          description: >
            Address of token to bridge on the _origin_ chain. Must be used
            together with parameter `outputToken`. For ETH, use the wrapped
            address, like WETH.


            Note that the address provided must exist on the specified
            `originChainId` below.
        - name: outputToken
          in: query
          required: true
          schema:
            type: string
            examples:
              - "0x4200000000000000000000000000000000000006"
          description: >
            Address of token to bridge on the _destination_ chain. Must be used
            together with parameter `inputToken`. For ETH, use the wrapped
            address, like WETH.


            Note that the address provided must exist on the specified
            `destinationChainId` below.
        - name: originChainId
          in: query
          required: true
          description: >
            Chain ID where the specified `token` or `inputToken` exists.
          schema:
            allOf:
              - $ref: "#/components/schemas/ChainId"
            examples:
              - 1
        - name: destinationChainId
          in: query
          required: true
          description: >
            The desired destination chain ID of the bridge transfer.
          schema:
            allOf:
              - $ref: "#/components/schemas/ChainId"
            examples:
              - 10
        - name: amount
          in: query
          required: true
          description: >
            Amount of the token to transfer.


            Note that this amount is in the native decimals of the token. So,
            for WETH, this would be the amount of human-readable WETH multiplied
            by 1e18. For USDC, you would multiply the number of human-readable
            USDC by 1e6.
          schema:
            type: integer
            minimum: 1
            examples:
              - "1000000000000000000"
        - name: recipient
          in: query
          required: false
          description: >
            Recipient of the deposit. Can be an EOA or a contract. If this is an
            EOA and message is defined, then the API will throw a 4xx error.


            _Example_: 0xc186fA914353c44b2E33eBE05f21846F1048bEda
          schema:
            type: string
        - name: message
          in: query
          required: false
          description: >
            Calldata passed to the `recipient` if `recipient` is a contract
            address.  This calldata is passed to the recipient via the
            recipient's handleAcrossMessage() public function.

            _Example:_ 0xABC123
          schema:
            type: string
        - name: relayer
          in: query
          required: false
          description: >
            Optionally override the relayer address used to simulate the
            fillRelay() call that estimates the gas costs needed to fill a
            deposit. This simulation result impacts the returned suggested-fees.
            The reason to customize the EOA would be primarily if the
            recipientAddress is a contract and requires a certain relayer to
            submit the fill, or if one specific relayer has the necessary token
            balance to make the fill.


            _Example:_ 0x428AB2BA90Eba0a4Be7aF34C9Ac451ab061AC010
          schema:
            type: string
        - name: timestamp
          in: query
          required: false
          description: >
            The quote timestamp used to compute the LP fees. When bridging with
            across, the user only specifies the quote timestamp in their
            transaction. The relayer then determines the utilization at that
            timestamp to determine the user's fee. This timestamp must be close
            (within 10 minutes or so) to the current time on the chain where the
            user is depositing funds and it should be <= the current block
            timestamp on mainnet. This allows the user to know exactly what LP
            fee they will pay before sending the transaction. 


            If this value isn't provided in the request, the API will assume the
            latest block timestamp on mainnet.


            _Example:_ 1653547649
          schema:
            type: integer
      responses:
        200:
          description: Suggested fees for the transaction and supporting data
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/SuggestedFees"
              example:
                {
                  "totalRelayFee":
                    { "pct": "376607094864283", "total": "376607094864283" },
                  "relayerCapitalFee":
                    { "pct": "100200000000000", "total": "100200000000000" },
                  "relayerGasFee":
                    { "pct": "276407094864283", "total": "276407094864283" },
                  "lpFee": { "pct": "4552495218411721", "total": "1708047000" },
                  "timestamp": "1708047000",
                  "isAmountTooLow": false,
                  "quoteBlock": "19237525",
                  "spokePoolAddress": "0xe35e9842fceaCA96570B734083f4a58e8F7C5f2A",
                  "expectedFillTimeSec": "4",
                  "fillDeadline": "1737033609",
                  "limits":
                    {
                      "minDeposit": "7799819",
                      "maxDeposit": "22287428516241",
                      "maxDepositInstant": "201958902363",
                      "maxDepositShortDelay": "2045367713809",
                      "recommendedDepositInstant": "201958902363",
                    },
                }
        "400":
          description: Invalid input
        "500":
          description: Unexpected error within the API
  /limits:
    get:
      x-codeSamples:
        - lang: bash
          label: Curl
          source: >
            curl -L \
              'https://app.across.to/api/limits?inputToken=0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2&outputToken=0x4200000000000000000000000000000000000006&originChainId=1&destinationChainId=10'
      summary: Retrieve current transfer limits of the system
      description: Returns transfer limits for `inputToken`+`outputToken`, `originChainId`, and `destinationChainId`.
      parameters:
        - name: inputToken
          in: query
          required: true
          schema:
            type: string
            examples:
              - "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2"
          description: >
            Address of token to bridge on the _origin_ chain. Must be used
            together with parameter `outputToken`. For ETH, use the wrapped
            address, like WETH.


            Note that the address provided must exist on the specified
            `originChainId`.
        - name: outputToken
          in: query
          required: true
          schema:
            type: string
            examples:
              - "0x4200000000000000000000000000000000000006"
          description: >
            Address of token to bridge on the _destination_ chain. Must be used
            together with parameter `inputToken`. For ETH, use the wrapped
            address, like WETH.


            Note that the address provided must match the token address on the
            specified `destinationChainId` below.
        - name: originChainId
          in: query
          required: true
          description: >
            Chain ID where the specified `token` or `inputToken` exists.
          schema:
            allOf:
              - $ref: "#/components/schemas/ChainId"
            examples:
              - 1
        - name: destinationChainId
          in: query
          required: true
          description: >
            The intended destination chain ID of the bridge transfer.
          schema:
            allOf:
              - $ref: "#/components/schemas/ChainId"
            examples:
              - 10
      responses:
        "200":
          description: Transfer limits
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/TransferLimits"
              example:
                {
                  "minDeposit": "7799819",
                  "maxDeposit": "22287428516241",
                  "maxDepositInstant": "201958902363",
                  "maxDepositShortDelay": "2045367713809",
                  "recommendedDepositInstant": "201958902363",
                }
        "400":
          description: Invalid input
        "500":
          description: Unexpected error within the API
  /available-routes:
    get:
      summary: Retrieve available routes for transfers
      description: Returns available routes based on specified parameters.
      parameters:
        - name: originChainId
          in: query
          required: false
          description: >
            Chain ID of the originating chain.
          schema:
            allOf:
              - example: 1
              - $ref: "#/components/schemas/ChainId"
        - name: destinationChainId
          in: query
          required: false
          description: >
            Chain ID of the destination chain.
          schema:
            allOf:
              - example: 10
              - $ref: "#/components/schemas/ChainId"
        - name: originToken
          in: query
          required: false
          description: >
            Origin chain address of token contract to transfer.


            _Example:_ 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2
          example: "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2"
          schema:
            type: string
        - name: destinationToken
          in: query
          required: false
          example: "0x4200000000000000000000000000000000000006"
          description: >
            Destination chain address of token contract to receive.


            _Example:_ 0x4200000000000000000000000000000000000006
          schema:
            type: string
      responses:
        "200":
          description: List of available routes
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: "#/components/schemas/AvailableRoute"
              example:
                [
                  {
                    "originChainId": "1",
                    "destinationChainId": "10",
                    "originToken": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
                    "destinationToken": "0x4200000000000000000000000000000000000006",
                    "originTokenSymbol": "WETH",
                    "destinationTokenSymbol": "WETH",
                  },
                ]
        "400":
          description: Invalid input
        "500":
          description: Unexpected error within the API
  /deposit/status:
    get:
      summary: Track the lifecycle of a deposit
      description: >
        Returns the fill status of a deposit along with a corresponding fill transaction hash if filled.
         
        This endpoint loads data queried by an indexing service that polls relevant events on a 10-second cadence. 

        Users should therefore expect an average latency of 1 to 15 seconds after submitting a deposit to see the status changed in this endpoint. 

        This delay comes from the time it takes for the internal indexing to include the deposit transaction.
      parameters:
        - name: originChainId
          in: query
          required: true
          description: >
            Chain Id where the deposit originated from.
          schema:
            allOf:
              - $ref: "#/components/schemas/ChainId"
            examples:
              - 137
        - name: depositId
          in: query
          required: true
          description: >
            The deposit id that is emitted from the `DepositV3` function call as a `V3FundsDeposited` event.
          schema:
            type: integer
            minimum: 0
            examples:
              - 1349975
      responses:
        200:
          description: Lifecycle of a transaction
          content:
            application/json:
              schema:
                type: object
                properties:
                  fillStatus:
                    type: string
                    enum: ["filled", "pending", "expired", "refunded", "slowFillRequested"]
                    description: >
                      The status of the deposit.
                       * filled: Deposits with this status have been filled on the destination chain and the recipient should have received funds. A FilledV3Relay event was emitted on the destination chain SpokePool.
                       * pending: Deposit has not been filled yet.
                       * expired: Deposit has expired and will not be filled. Expired deposits will be refunded to the `depositor` on the `originChainId` in the next batch of repayments.
                       * refunded: Deposit has expired and the depositor has been successfully refunded on the originChain. 
                       * slowFillRequested: Deposit has been made but no relayer has filled the intent, therefore Across' relayer fills the user’s intent without requiring another relayer to front the capital. It's important that the input token and output token are the same asset here.
                  fillTxHash:
                    type: string
                    description: >
                      The transaction hash of the fill transaction on the destination chain.
                      This field is only present when `fillStatus` is `filled`.
                  destinationChainId:
                    type: integer
                    description: >
                      The chain id where the fill transaction will take place.
              example:
                {
                  "fillStatus": "filled",
                  "fillTxHash": "0x123abc<...>",
                  "destinationChainId": 42161,
                }
components:
  schemas:
    SuggestedFees:
      type: object
      properties:
        totalRelayFee:
          type: object
          properties:
            pct:
              type: string
              description: >
                The percentage of the transfer amount that should go to the
                relayer as a fee in total. The value is inclusive of
                `lpFee.pct`. 


                This is the strongly recommended minimum value to ensure a
                relayer will perform the transfer under the current network
                conditions. The value returned in this field is guaranteed
                to be at least 0.03% in order to meet minimum relayer fee
                requirements.


                Note: 1% is represented as 1e16, 100% is 1e18, 50% is 5e17,
                etc. These values are in the same format that the contract
                understands.
              example: "376607094864283"
            total:
              type: string
              description: >
                The amount of the transfer that should go to the relayer a
                fee in total. This value is inclusive of `lpFee.total`.
              example: "376607094864283"
        relayerCapitalFee:
          type: object
          properties:
            pct:
              type: string
              example: "100200000000000"
              description: >
                The percentage of the transfer amount that should go the
                relayer as a fee to cover relayer capital costs.


                Note: 1% is represented as 1e16, 100% is 1e18, 50% is 5e17,
                etc. These values are in the same format that the contract
                understands.
            total:
              type: string
              description: >
                The amount that should go to the relayer as a fee to cover
                relayer capital costs.
              example: "100200000000000"
        relayerGasFee:
          type: object
          properties:
            pct:
              type: string
              description: >
                The percentage of the transfer amount that should go the
                relayer as a fee to cover relayer gas costs.


                Note: 1% is represented as 1e16, 100% is 1e18, 50% is 5e17,
                etc. These values are in the same format that the contract
                understands.
              example: "276407094864283"
            total:
              type: string
              description: >
                The amount that should go to the relayer as a fee to cover
                relayer gas costs.
              example: "276407094864283"
        lpFee:
          type: object
          properties:
            pct:
              type: string
              description: >
                The percent of the amount that will go to the LPs as a fee
                for borrowing their funds.


                Note: 1% is represented as 1e16, 100% is 1e18, 50% is 5e17,
                etc. These values are in the same format that the contract
                understands.
              example: "4552495218411721"
            total:
              type: string
              description: >
                The amount that will go to the LPs as a fee for borrowing
                their funds.
              example: "4552495218411721"
        timestamp:
          type: string
          description: >
            The quote timestamp that was used to compute the lpFeePct. To pay
            the quoted LP fee, the user would need to pass this quote timestamp
            to the protocol when sending their bridge transaction.
          example: "1708047000"
        isAmountTooLow:
          type: boolean
          description: >
            Is the input amount below the minimum transfer amount.
          example: false
        quoteBlock:
          type: string
          description: >
            The block used associated with this quote, used to compute lpFeePct.
          example: "19237525"
        spokePoolAddress:
          type: string
          description: >
            The contract address of the origin SpokePool.
          example: "0xe35e9842fceaCA96570B734083f4a58e8F7C5f2A"
        exclusiveRelayer:
          type: string
          description: >
            The relayer that is suggested to be set as the exclusive relayer
            for in the depositV3 call for the fastest fill. Note: when set
            to "0x0000000000000000000000000000000000000000", relayer exclusivity
            will be disabled. This value is returned in cases where using an
            exclusive relayer is not recommended.
          example: "0x428AB2BA90Eba0a4Be7aF34C9Ac451ab061AC010"
        exclusivityDeadline:
          type: string
          description: >
            The suggested exclusivity period (in seconds) the exclusive relayer should be given
            to fill before other relayers are allowed to take the fill. Note: when set
            to "0", relayer exclusivity will be disabled. This value is returned in cases
            where using an exclusive relayer is not reccomended.
          example: "10"
        expectedFillTimeSec:
          type: string
          description: >
            The expected time (in seconds) for a fill to be made. Represents 75th percentile of the 7-day rolling average of times (updated daily). Times are dynamic by origin/destination token/chain for a given amount.
          example: "4"
        fillDeadline:
          type: string
          description: >
            The recommended deadline (UNIX timestamp in seconds) for the relayer to fill the deposit. After this destination chain timestamp, the fill will revert on the destination chain.
        limits:
          $ref: "#/components/schemas/TransferLimits"
    TransferLimits:
      type: object
      properties:
        minDeposit:
          type: string
          description: >
            The minimum deposit size in the tokens' units. Note: USDC has 6
            decimals, so this value would be the number of USDC multiplied by
            1e6. For WETH, that would be 1e18.
          example: 7799819
        maxDeposit:
          type: string
          description: >
            The maximum deposit size in the tokens' units. Note: The formatting
            of this number is the same as minDeposit.
          example: 22287428516241
        maxDepositInstant:
          type: string
          description: >
            The max deposit size that can be relayed "instantly" on the
            destination chain. Instantly means that there is relayer capital
            readily available and that a relayer is expected to relay within
            seconds to 5 minutes of the deposit.
          example: 201958902363
        maxDepositShortDelay:
          type: string
          description: >
            The max deposit size that can be relayed with a "short delay" on the
            destination chain. This means that there is relayer capital
            available on mainnet and that a relayer will immediately begin
            moving that capital over the canonical bridge to relay the deposit.
            Depending on the chain, the time for this can vary. Polygon is the
            worst case where it can take between 20 and 35 minutes for the
            relayer to receive the funds and relay. Arbitrum is much faster,
            with a range between 5 and 15 minutes. Note: if the transfer size is
            greater than this, the estimate should be between 2-4 hours for a
            slow relay to be processed from the mainnet pool.
          example: 2045367713809
        recommendedDepositInstant:
          type: string
          description: >
            The recommended deposit size that can be relayed "instantly" on the
            destination chain. Instantly means that there is relayer capital
            readily available and that a relayer is expected to relay within
            seconds to 5 minutes of the deposit. Value is in the smallest unit of
            the respective token.
          example: 2045367713809
    AvailableRoute:
      type: object
      properties:
        originChainId:
          type: string
          description: Chain ID of the originating chain.
          example: 1
        destinationChainId:
          type: string
          description: Chain ID of the destination chain.
          example: 10
        originToken:
          type: string
          description: Origin chain address of token contract to transfer.
          example: "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2"
        destinationToken:
          type: string
          description: Destination chain address of token contract to receive.
          example: "0x4200000000000000000000000000000000000006"
        originTokenSymbol:
          type: string
          description: The symbol of the origin token to transfer.
          example: "WETH"
        destinationTokenSymbol:
          type: string
          description: The symbol of the destination token to receive.
          example: "WETH"
    ChainId:
      type: integer
      minimum: 1
      enum: [
          1,
          10,
          137,
          324,
          8453,
          42161,
          59144,
          # testnets
          84532,
          421614,
          11155420,
          11155111,
        ]