0x API — Swap

naftiko: 1.0.0-alpha2
info:
  label: 0x API — Swap
  description: '0x API — Swap. 5 operations. Lead operation: Get Price (Allowance Holder). Self-contained Naftiko capability
    covering one 0x business surface.'
  tags:
  - 0x
  - 0X Api
  - Swap
  created: '2026-05-28'
  modified: '2026-05-28'
binds:
- namespace: env
  keys:
    0X_API_KEY: 0X_API_KEY
capability:
  consumes:
  - type: http
    namespace: 0x-api-swap
    baseUri: https://api.0x.org
    description: 0x API — Swap business capability. Self-contained, no shared references.
    authentication:
      type: apiKey
      in: header
      name: 0x-api-key
      value: '{{env.0X_API_KEY}}'
    defaultHeaders:
      0x-version: v2
    resources:
    - name: swap-allowance-holder-price
      path: /swap/allowance-holder/price
      operations:
      - name: swap-allowanceholder-getprice
        method: GET
        path: /swap/allowance-holder/price
        description: Get Price (Allowance Holder)
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: 0x-api-key
          in: header
          type: string
          required: true
          description: Visit dashboard.0x.org to get your API Key
        - name: 0x-version
          in: header
          type: string
          required: true
          description: API version
        - name: chainId
          in: query
          type: integer
          required: true
          description: Chain ID. See [here](https://docs.0x.org/docs/introduction/supported-chains) for the list of supported
            chains
        - name: buyToken
          in: query
          type: string
          required: true
          description: The contract address of the token to buy
        - name: sellToken
          in: query
          type: string
          required: true
          description: The contract address of the token to sell
        - name: sellAmount
          in: query
          type: string
          required: false
          description: The amount of `sellToken` in `sellToken` base units to sell
        - name: buyAmount
          in: query
          type: string
          required: false
          description: The exact amount of `buyToken` in `buyToken` base units to buy
        - name: taker
          in: query
          type: string
          required: false
          description: The address which holds the `sellToken` balance and has the allowance set for the swap
        - name: txOrigin
          in: query
          type: string
          required: false
          description: The address of the external account that started the transaction. This is only needed if `taker` is
            a smart contract.
        - name: recipient
          in: query
          type: string
          required: false
          description: The address to receive the `buyToken`. If not provided, defaults to the taker address. Not supported
            for wrap/unwrap operations.
        - name: swapFeeRecipient
          in: query
          type: string
          required: false
          description: The wallet address to receive the specified trading fees (supports single or multiple comma-separated
            values). You must also specify the `swapFeeBps` in the request to use this feature. When multiple values are provided,
            must match length of `swapFeeBps`.
        - name: swapFeeBps
          in: query
          type: string
          required: false
          description: The amount in Bps of the `swapFeeToken` to charge and deliver to the `swapFeeRecipient` (supports single
            or multiple comma-separated values). You must also specify the `swapFeeRecipient` in the request to use this feature.
            For security, this field has a default limit of 1000 Bps. If your application requires a higher value, please
            reach out to us.
        - name: swapFeeToken
          in: query
          type: string
          required: false
          description: The contract address of the token to receive trading fees in (supports single or multiple comma-separated
            values). Each token must be set to the value of either the `buyToken` or the `sellToken`. If omitted, the fee
            token will be determined by 0x with preference to stablecoins and highly liquid assets. You must also specify
            the `swapFeeRecipient` and `swapFeeBps` to charge integrator fees. When multiple values are provided, must match
            length of `swapFeeBps`.
        - name: tradeSurplusRecipient
          in: query
          type: string
          required: false
          description: The address to receive any trade surplus. If specified, this address will receive trade surplus when
            applicable. Otherwise, the taker will receive the surplus. This feature is only available to selected integrators
            on a custom pricing plan. In other cases, the surplus will be collected by 0x. For assistance with a custom plan,
            please contact support.
        - name: tradeSurplusMaxBps
          in: query
          type: integer
          required: false
          description: The maximum trade surplus (positive slippage) that can be collected in Bps of the buy amount. If not
            provided, defaults to 10000 (100%). Must be used together with `tradeSurplusRecipient`.
        - name: gasPrice
          in: query
          type: string
          required: false
          description: The target gas price (in wei) for the swap transaction. If not provided, the default value is based
            on the 0x gas price oracle
        - name: slippageBps
          in: query
          type: integer
          required: false
          description: The maximum acceptable slippage of the `buyToken` in Bps. If this parameter is set to 0, no slippage
            will be tolerated. If not provided, the default slippage tolerance is 100Bps
        - name: slippagePpm
          in: query
          type: integer
          required: false
          description: The maximum acceptable slippage of the `buyToken` in parts-per-million (PPM). Mutually exclusive with
            `slippageBps`. e.g. 3000 PPM = 30 BPS = 0.30%.
        - name: excludedSources
          in: query
          type: string
          required: false
          description: Liquidity sources e.g. Uniswap_V3, SushiSwap, 0x_RFQ to exclude from the provided quote. See https://api.0x.org/sources?chainId=<chain_id>
            with the desired chain's ID for a full list of sources. Separate multiple sources with a comma
        - name: sellEntireBalance
          in: query
          type: string
          required: false
          description: If set to `true`, the taker's entire `sellToken` balance will be sold during trade execution. The `sellAmount`
            should be the maximum estimated value, as close as possible to the actual taker's balance to ensure the best routing.
            Selling more than the `sellAmount` may cause the trade to revert. This feature is designed for cases where the
            precise sell amount is determined during execution. Learn more [here](https://docs.0x.org/docs/0x-swap-api/additional-topics/sell-entire-balance).
        - name: wrapUnwrapMode
          in: query
          type: string
          required: false
          description: Controls how native wrap/unwrap trades are executed. `direct` calls the wrapped-native token contract
            directly. `settler` routes wrap/unwrap through Settler or Allowance Holder for compatibility. Ignored for non-wrap/unwrap
            swaps. If omitted, `direct` mode is used.
    - name: swap-allowance-holder-quote
      path: /swap/allowance-holder/quote
      operations:
      - name: swap-allowanceholder-getquote
        method: GET
        path: /swap/allowance-holder/quote
        description: Get Quote (Allowance Holder)
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: 0x-api-key
          in: header
          type: string
          required: true
          description: Visit dashboard.0x.org to get your API Key
        - name: 0x-version
          in: header
          type: string
          required: true
          description: API version
        - name: chainId
          in: query
          type: integer
          required: true
          description: Chain ID. See [here](https://docs.0x.org/docs/introduction/supported-chains) for the list of supported
            chains
        - name: buyToken
          in: query
          type: string
          required: true
          description: The contract address of the token to buy
        - name: sellToken
          in: query
          type: string
          required: true
          description: The contract address of the token to sell
        - name: sellAmount
          in: query
          type: string
          required: false
          description: The amount of `sellToken` in `sellToken` base units to sell
        - name: buyAmount
          in: query
          type: string
          required: false
          description: The exact amount of `buyToken` in `buyToken` base units to buy
        - name: taker
          in: query
          type: string
          required: true
          description: The address which holds the `sellToken` balance and has the allowance set for the swap
        - name: txOrigin
          in: query
          type: string
          required: false
          description: The address of the external account that started the transaction. This is only needed if `taker` is
            a smart contract.
        - name: recipient
          in: query
          type: string
          required: false
          description: The address to receive the `buyToken`. If not provided, defaults to the taker address. Not supported
            for wrap/unwrap operations.
        - name: swapFeeRecipient
          in: query
          type: string
          required: false
          description: The wallet address to receive the specified trading fees (supports single or multiple comma-separated
            values). You must also specify the `swapFeeBps` in the request to use this feature. When multiple values are provided,
            must match length of `swapFeeBps`.
        - name: swapFeeBps
          in: query
          type: string
          required: false
          description: The amount in Bps of the `swapFeeToken` to charge and deliver to the `swapFeeRecipient` (supports single
            or multiple comma-separated values). You must also specify the `swapFeeRecipient` in the request to use this feature.
            For security, this field has a default limit of 1000 Bps. If your application requires a higher value, please
            reach out to us.
        - name: swapFeeToken
          in: query
          type: string
          required: false
          description: The contract address of the token to receive trading fees in (supports single or multiple comma-separated
            values). Each token must be set to the value of either the `buyToken` or the `sellToken`. If omitted, the fee
            token will be determined by 0x with preference to stablecoins and highly liquid assets. You must also specify
            the `swapFeeRecipient` and `swapFeeBps` to charge integrator fees. When multiple values are provided, must match
            length of `swapFeeBps`.
        - name: tradeSurplusRecipient
          in: query
          type: string
          required: false
          description: The address to receive any trade surplus. If specified, this address will receive trade surplus when
            applicable. Otherwise, the taker will receive the surplus. This feature is only available to selected integrators
            on a custom pricing plan. In other cases, the surplus will be collected by 0x. For assistance with a custom plan,
            please contact support.
        - name: tradeSurplusMaxBps
          in: query
          type: integer
          required: false
          description: The maximum trade surplus (positive slippage) that can be collected in Bps of the buy amount. If not
            provided, defaults to 10000 (100%). Must be used together with `tradeSurplusRecipient`.
        - name: gasPrice
          in: query
          type: string
          required: false
          description: The target gas price (in wei) for the swap transaction. If not provided, the default value is based
            on the 0x gas price oracle
        - name: slippageBps
          in: query
          type: integer
          required: false
          description: The maximum acceptable slippage of the `buyToken` in Bps. If this parameter is set to 0, no slippage
            will be tolerated. If not provided, the default slippage tolerance is 100Bps
        - name: slippagePpm
          in: query
          type: integer
          required: false
          description: The maximum acceptable slippage of the `buyToken` in parts-per-million (PPM). Mutually exclusive with
            `slippageBps`. e.g. 3000 PPM = 30 BPS = 0.30%.
        - name: excludedSources
          in: query
          type: string
          required: false
          description: Liquidity sources e.g. Uniswap_V3, SushiSwap, 0x_RFQ to exclude from the provided quote. `See https://api.0x.org/sources?chainId=<chain_id>`
            with the desired chain's ID for a full list of sources. Separate multiple sources with a comma
        - name: sellEntireBalance
          in: query
          type: string
          required: false
          description: If set to `true`, the taker's entire `sellToken` balance will be sold during trade execution. The `sellAmount`
            should be the maximum estimated value, as close as possible to the actual taker's balance to ensure the best routing.
            Selling more than the `sellAmount` may cause the trade to revert. This feature is designed for cases where the
            precise sell amount is determined during execution. Learn more [here](https://docs.0x.org/docs/0x-swap-api/additional-topics/sell-entire-balance).
        - name: wrapUnwrapMode
          in: query
          type: string
          required: false
          description: Controls how native wrap/unwrap trades are executed. `direct` calls the wrapped-native token contract
            directly. `settler` routes wrap/unwrap through Settler or Allowance Holder for compatibility. Ignored for non-wrap/unwrap
            swaps. If omitted, `direct` mode is used.
    - name: swap-permit2-price
      path: /swap/permit2/price
      operations:
      - name: swap-permit2-getprice
        method: GET
        path: /swap/permit2/price
        description: Get Price (Permit2)
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: 0x-api-key
          in: header
          type: string
          required: true
          description: Visit dashboard.0x.org to get your API Key
        - name: 0x-version
          in: header
          type: string
          required: true
          description: API version
        - name: chainId
          in: query
          type: integer
          required: true
          description: Chain ID. See [here](https://docs.0x.org/docs/introduction/supported-chains) for the list of supported
            chains
        - name: buyToken
          in: query
          type: string
          required: true
          description: The contract address of the token to buy
        - name: sellToken
          in: query
          type: string
          required: true
          description: The contract address of the token to sell
        - name: sellAmount
          in: query
          type: string
          required: false
          description: The amount of `sellToken` in `sellToken` base units to sell
        - name: buyAmount
          in: query
          type: string
          required: false
          description: The exact amount of `buyToken` in `buyToken` base units to buy
        - name: taker
          in: query
          type: string
          required: false
          description: The address which holds the `sellToken` balance and has the allowance set for the swap
        - name: txOrigin
          in: query
          type: string
          required: false
          description: The address of the external account that started the transaction. This is only needed if `taker` is
            a smart contract.
        - name: recipient
          in: query
          type: string
          required: false
          description: The address to receive the `buyToken`. If not provided, defaults to the taker address. Not supported
            for wrap/unwrap operations.
        - name: swapFeeRecipient
          in: query
          type: string
          required: false
          description: The wallet address to receive the specified trading fees (supports single or multiple comma-separated
            values). You must also specify the `swapFeeBps` in the request to use this feature. When multiple values are provided,
            must match length of `swapFeeBps`.
        - name: swapFeeBps
          in: query
          type: string
          required: false
          description: The amount in Bps of the `swapFeeToken` to charge and deliver to the `swapFeeRecipient` (supports single
            or multiple comma-separated values). You must also specify the `swapFeeRecipient` in the request to use this feature.
            For security, this field has a default limit of 1000 Bps. If your application requires a higher value, please
            reach out to us.
        - name: swapFeeToken
          in: query
          type: string
          required: false
          description: The contract address of the token to receive trading fees in (supports single or multiple comma-separated
            values). Each token must be set to the value of either the `buyToken` or the `sellToken`. If omitted, the fee
            token will be determined by 0x with preference to stablecoins and highly liquid assets. You must also specify
            the `swapFeeRecipient` and `swapFeeBps` to charge integrator fees. When multiple values are provided, must match
            length of `swapFeeBps`.
        - name: tradeSurplusRecipient
          in: query
          type: string
          required: false
          description: The address to receive any trade surplus. If specified, this address will receive trade surplus when
            applicable. Otherwise, the taker will receive the surplus. This feature is only available to selected integrators
            on a custom pricing plan. In other cases, the surplus will be collected by 0x. For assistance with a custom plan,
            please contact support.
        - name: tradeSurplusMaxBps
          in: query
          type: integer
          required: false
          description: The maximum trade surplus (positive slippage) that can be collected in Bps of the buy amount. If not
            provided, defaults to 10000 (100%). Must be used together with `tradeSurplusRecipient`.
        - name: gasPrice
          in: query
          type: string
          required: false
          description: The target gas price (in wei) for the swap transaction. If not provided, the default value is based
            on the 0x gas price oracle
        - name: slippageBps
          in: query
          type: integer
          required: false
          description: The maximum acceptable slippage of the `buyToken` in Bps. If this parameter is set to 0, no slippage
            will be tolerated. If not provided, the default slippage tolerance is 100Bps
        - name: slippagePpm
          in: query
          type: integer
          required: false
          description: The maximum acceptable slippage of the `buyToken` in parts-per-million (PPM). Mutually exclusive with
            `slippageBps`. e.g. 3000 PPM = 30 BPS = 0.30%.
        - name: excludedSources
          in: query
          type: string
          required: false
          description: Liquidity sources e.g. Uniswap_V3, SushiSwap, 0x_RFQ to exclude from the provided quote. See https://api.0x.org/sources?chainId=<chain_id>
            with the desired chain's ID for a full list of sources. Separate multiple sources with a comma
        - name: sellEntireBalance
          in: query
          type: string
          required: false
          description: If set to `true`, the taker's entire `sellToken` balance will be sold during trade execution. The `sellAmount`
            should be the maximum estimated value, as close as possible to the actual taker's balance to ensure the best routing.
            Selling more than the `sellAmount` may cause the trade to revert. This feature is designed for cases where the
            precise sell amount is determined during execution. Learn more [here](https://docs.0x.org/docs/0x-swap-api/additional-topics/sell-entire-balance).
        - name: wrapUnwrapMode
          in: query
          type: string
          required: false
          description: Controls how native wrap/unwrap trades are executed. `direct` calls the wrapped-native token contract
            directly. `settler` routes wrap/unwrap through Settler or Allowance Holder for compatibility. Ignored for non-wrap/unwrap
            swaps. If omitted, `direct` mode is used.
    - name: swap-permit2-quote
      path: /swap/permit2/quote
      operations:
      - name: swap-permit2-getquote
        method: GET
        path: /swap/permit2/quote
        description: Get Quote (Permit2)
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: 0x-api-key
          in: header
          type: string
          required: true
          description: Visit dashboard.0x.org to get your API Key
        - name: 0x-version
          in: header
          type: string
          required: true
          description: API version
        - name: chainId
          in: query
          type: integer
          required: true
          description: Chain ID. See [here](https://docs.0x.org/docs/introduction/supported-chains) for the list of supported
            chains
        - name: buyToken
          in: query
          type: string
          required: true
          description: The contract address of the token to buy
        - name: sellToken
          in: query
          type: string
          required: true
          description: The contract address of the token to sell
        - name: sellAmount
          in: query
          type: string
          required: false
          description: The amount of `sellToken` in `sellToken` base units to sell
        - name: buyAmount
          in: query
          type: string
          required: false
          description: The exact amount of `buyToken` in `buyToken` base units to buy
        - name: taker
          in: query
          type: string
          required: true
          description: The address which holds the `sellToken` balance and has the allowance set for the swap
        - name: txOrigin
          in: query
          type: string
          required: false
          description: The address of the external account that started the transaction. This is only needed if `taker` is
            a smart contract.
        - name: recipient
          in: query
          type: string
          required: false
          description: The address to receive the `buyToken`. If not provided, defaults to the taker address. Not supported
            for wrap/unwrap operations.
        - name: swapFeeRecipient
          in: query
          type: string
          required: false
          description: The wallet address to receive the specified trading fees (supports single or multiple comma-separated
            values). You must also specify the `swapFeeBps` in the request to use this feature. When multiple values are provided,
            must match length of `swapFeeBps`.
        - name: swapFeeBps
          in: query
          type: string
          required: false
          description: The amount in Bps of the `swapFeeToken` to charge and deliver to the `swapFeeRecipient` (supports single
            or multiple comma-separated values). You must also specify the `swapFeeRecipient` in the request to use this feature.
            For security, this field has a default limit of 1000 Bps. If your application requires a higher value, please
            reach out to us.
        - name: swapFeeToken
          in: query
          type: string
          required: false
          description: The contract address of the token to receive trading fees in (supports single or multiple comma-separated
            values). Each token must be set to the value of either the `buyToken` or the `sellToken`. If omitted, the fee
            token will be determined by 0x with preference to stablecoins and highly liquid assets. You must also specify
            the `swapFeeRecipient` and `swapFeeBps` to charge integrator fees. When multiple values are provided, must match
            length of `swapFeeBps`.
        - name: tradeSurplusRecipient
          in: query
          type: string
          required: false
          description: The address to receive any trade surplus. If specified, this address will receive trade surplus when
            applicable. Otherwise, the taker will receive the surplus. This feature is only available to selected integrators
            on a custom pricing plan. In other cases, the surplus will be collected by 0x. For assistance with a custom plan,
            please contact support.
        - name: tradeSurplusMaxBps
          in: query
          type: integer
          required: false
          description: The maximum trade surplus (positive slippage) that can be collected in Bps of the buy amount. If not
            provided, defaults to 10000 (100%). Must be used together with `tradeSurplusRecipient`.
        - name: gasPrice
          in: query
          type: string
          required: false
          description: The target gas price (in wei) for the swap transaction. If not provided, the default value is based
            on the 0x gas price oracle
        - name: slippageBps
          in: query
          type: integer
          required: false
          description: The maximum acceptable slippage of the `buyToken` in Bps. If this parameter is set to 0, no slippage
            will be tolerated. If not provided, the default slippage tolerance is 100Bps
        - name: slippagePpm
          in: query
          type: integer
          required: false
          description: The maximum acceptable slippage of the `buyToken` in parts-per-million (PPM). Mutually exclusive with
            `slippageBps`. e.g. 3000 PPM = 30 BPS = 0.30%.
        - name: excludedSources
          in: query
          type: string
          required: false
          description: Liquidity sources e.g. Uniswap_V3, SushiSwap, 0x_RFQ to exclude from the provided quote. `See https://api.0x.org/sources?chainId=<chain_id>`
            with the desired chain's ID for a full list of sources. Separate multiple sources with a comma
        - name: sellEntireBalance
          in: query
          type: string
          required: false
          description: If set to `true`, the taker's entire `sellToken` balance will be sold during trade execution. The `sellAmount`
            should be the maximum estimated value, as close as possible to the actual taker's balance to ensure the best routing.
            Selling more than the `sellAmount` may cause the trade to revert. This feature is designed for cases where the
            precise sell amount is determined during execution. Learn more [here](https://docs.0x.org/docs/0x-swap-api/additional-topics/sell-entire-balance).
        - name: wrapUnwrapMode
          in: query
          type: string
          required: false
          description: Controls how native wrap/unwrap trades are executed. `direct` calls the wrapped-native token contract
            directly. `settler` routes wrap/unwrap through Settler or Allowance Holder for compatibility. Ignored for non-wrap/unwrap
            swaps. If omitted, `direct` mode is used.
    - name: swap-chains
      path: /swap/chains
      operations:
      - name: swap-chains
        method: GET
        path: /swap/chains
        description: Get Supported Chains
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: 0x-api-key
          in: header
          type: string
          required: true
          description: Visit dashboard.0x.org to get your API Key
        - name: 0x-version
          in: header
          type: string
          required: true
          description: API version
  exposes:
  - type: rest
    namespace: 0x-api-swap-rest
    port: 8080
    description: REST adapter for 0x API — Swap. One Spectral-compliant resource per consumed operation.
    resources:
    - path: /swap/allowance-holder/price
      name: swap-allowance-holder-price
      description: REST surface for swap-allowance-holder-price.
      operations:
      - method: GET
        name: swap-allowanceholder-getprice
        description: Get Price (Allowance Holder)
        call: 0x-api-swap.swap-allowanceholder-getprice
        with:
          0x-api-key: rest.0x-api-key
          0x-version: rest.0x-version
          chainId: rest.chainId
          buyToken: rest.buyToken
          sellToken: rest.sellToken
          sellAmount: rest.sellAmount
          buyAmount: rest.buyAmount
          taker: rest.taker
          txOrigin: rest.txOrigin
          recipient: rest.recipient
          swapFeeRecipient: rest.swapFeeRecipient
          swapFeeBps: rest.swapFeeBps
          swapFeeToken: rest.swapFeeToken
          tradeSurplusRecipient: rest.tradeSurplusRecipient
          tradeSurplusMaxBps: rest.tradeSurplusMaxBps
          gasPrice: rest.gasPrice
          slippageBps: rest.slippageBps
          slippagePpm: rest.slippagePpm
          excludedSources: rest.excludedSources
          sellEntireBalance: rest.sellEntireBalance
          wrapUnwrapMode: rest.wrapUnwrapMode
        outputParameters:
        - type: object
          mapping: $.
    - path: /swap/allowance-holder/quote
      name: swap-allowance-holder-quote
      description: REST surface for swap-allowance-holder-quote.
      operations:
      - method: GET
        name: swap-allowanceholder-getquote
        description: Get Quote (Allowance Holder)
        call: 0x-api-swap.swap-allowanceholder-getquote
        with:
          0x-api-key: rest.0x-api-key
          0x-version: rest.0x-version
          chainId: rest.chainId
          buyToken: rest.buyToken
          sellToken: rest.sellToken
          sellAmount: rest.sellAmount
          buyAmount: rest.buyAmount
          taker: rest.taker
          txOrigin: rest.txOrigin
          recipient: rest.recipient
          swapFeeRecipient: rest.swapFeeRecipient
          swapFeeBps: rest.swapFeeBps
          swapFeeToken: rest.swapFeeToken
          tradeSurplusRecipient: rest.tradeSurplusRecipient
          tradeSurplusMaxBps: rest.tradeSurplusMaxBps
          gasPrice: rest.gasPrice
          slippageBps: rest.slippageBps
          slippagePpm: rest.slippagePpm
          excludedSources: rest.excludedSources
          sellEntireBalance: rest.sellEntireBalance
          wrapUnwrapMode: rest.wrapUnwrapMode
        outputParameters:
        - type: object
          mapping: $.
    - path: /swap/permit2/price
      name: swap-permit2-price
      description: REST surface for swap-permit2-price.
      operations:
      - method: GET
        name: swap-permit2-getprice
        description: Get Price (Permit2)
        call: 0x-api-swap.swap-permit2-getprice
        with:
          0x-api-key: rest.0x-api-key
          0x-version: rest.0x-version
          chainId: rest.chainId
          buyToken: rest.buyToken
          sellToken: rest.sellToken
          sellAmount: rest.sellAmount
          buyAmount: rest.buyAmount
          taker: rest.taker
          txOrigin: rest.txOrigin
          recipient: rest.recipient
          swapFeeRecipient: rest.swapFeeRecipient
          swapFeeBps: rest.swapFeeBps
          swapFeeToken: rest.swapFeeToken
          tradeSurplusRecipient: rest.trad

# --- truncated at 32 KB (38 KB total) ---
# Full source: https://raw.githubusercontent.com/api-evangelist/0x/refs/heads/main/capabilities/0x-api-swap.yaml