0x · Capability
0x API — Gasless
0x API — Gasless. 6 operations. Lead operation: Get Gasless Price. Self-contained Naftiko capability covering one 0x business surface.
What You Can Do
GET
Gasless getprice
— Get Gasless Price
/gasless/price
GET
Gasless getquote
— Get Gasless Quote
/gasless/quote
POST
Gasless submit
— Submit Gasless Trade
/gasless/submit
GET
Gasless getstatus
— Get Gasless Trade Status
/gasless/status/{tradehash}
GET
Gasless getgaslessapprovaltokens
— Get Gasless Approval Tokens
/gasless/gasless-approval-tokens
GET
Gasless chains
— Get Supported Chains
/gasless/chains
MCP Tools
0x-gasless-getprice
Get Gasless Price
read-only
idempotent
0x-gasless-getquote
Get Gasless Quote
read-only
idempotent
0x-gasless-submit
Submit Gasless Trade
0x-gasless-getstatus
Get Gasless Trade Status
read-only
idempotent
0x-gasless-getgaslessapprovaltokens
Get Gasless Approval Tokens
read-only
idempotent
0x-gasless-chains
Get Supported Chains
read-only
idempotent
Capability Spec
naftiko: 1.0.0-alpha2
info:
label: 0x API — Gasless
description: '0x API — Gasless. 6 operations. Lead operation: Get Gasless Price. Self-contained Naftiko capability covering
one 0x business surface.'
tags:
- 0x
- 0X Api
- Gasless
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-gasless
baseUri: https://api.0x.org
description: 0x API — Gasless 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: gasless-price
path: /gasless/price
operations:
- name: gasless-getprice
method: GET
path: /gasless/price
description: Get Gasless Price
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. Native token is not supported
- name: sellAmount
in: query
type: string
required: true
description: The amount of `sellToken` in `sellToken` base units to sell
- 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: 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: slippageBps
in: query
type: integer
required: false
description: The maximum acceptable slippage of the `buyToken` in Bps. 0x sets the optimal slippage tolerance per
trade by default. To mitigate the risk of MEV attacks, we recommend adjusting this value only when trading low-liquidity
tokens.
- 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: gasless-quote
path: /gasless/quote
operations:
- name: gasless-getquote
method: GET
path: /gasless/quote
description: Get Gasless Quote
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. Native token is not supported
- name: sellAmount
in: query
type: string
required: true
description: The amount of `sellToken` in `sellToken` base units to sell
- 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: 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: slippageBps
in: query
type: integer
required: false
description: The maximum acceptable slippage of the `buyToken` in Bps. 0x sets the optimal slippage tolerance per
trade by default. To mitigate the risk of MEV attacks, we recommend adjusting this value only when trading low-liquidity
tokens.
- 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: gasless-submit
path: /gasless/submit
operations:
- name: gasless-submit
method: POST
path: /gasless/submit
description: Submit Gasless Trade
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: body
in: body
type: object
description: Request body (JSON).
required: true
- name: gasless-status-tradehash
path: /gasless/status/{tradeHash}
operations:
- name: gasless-getstatus
method: GET
path: /gasless/status/{tradeHash}
description: Get Gasless Trade Status
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: ' [here](https://docs.0x.org/docs/introduction/supported-chains) for the list of supported chains'
- name: tradeHash
in: path
type: string
required: true
description: The hash for the trade according to [EIP-712](https://eips.ethereum.org/EIPS/eip-712)
- name: gasless-gasless-approval-tokens
path: /gasless/gasless-approval-tokens
operations:
- name: gasless-getgaslessapprovaltokens
method: GET
path: /gasless/gasless-approval-tokens
description: Get Gasless Approval Tokens
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: gasless-chains
path: /gasless/chains
operations:
- name: gasless-chains
method: GET
path: /gasless/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-gasless-rest
port: 8080
description: REST adapter for 0x API — Gasless. One Spectral-compliant resource per consumed operation.
resources:
- path: /gasless/price
name: gasless-price
description: REST surface for gasless-price.
operations:
- method: GET
name: gasless-getprice
description: Get Gasless Price
call: 0x-api-gasless.gasless-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
taker: rest.taker
recipient: rest.recipient
swapFeeRecipient: rest.swapFeeRecipient
swapFeeBps: rest.swapFeeBps
swapFeeToken: rest.swapFeeToken
tradeSurplusRecipient: rest.tradeSurplusRecipient
tradeSurplusMaxBps: rest.tradeSurplusMaxBps
slippageBps: rest.slippageBps
slippagePpm: rest.slippagePpm
excludedSources: rest.excludedSources
outputParameters:
- type: object
mapping: $.
- path: /gasless/quote
name: gasless-quote
description: REST surface for gasless-quote.
operations:
- method: GET
name: gasless-getquote
description: Get Gasless Quote
call: 0x-api-gasless.gasless-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
taker: rest.taker
recipient: rest.recipient
swapFeeRecipient: rest.swapFeeRecipient
swapFeeBps: rest.swapFeeBps
swapFeeToken: rest.swapFeeToken
tradeSurplusRecipient: rest.tradeSurplusRecipient
tradeSurplusMaxBps: rest.tradeSurplusMaxBps
slippageBps: rest.slippageBps
slippagePpm: rest.slippagePpm
excludedSources: rest.excludedSources
outputParameters:
- type: object
mapping: $.
- path: /gasless/submit
name: gasless-submit
description: REST surface for gasless-submit.
operations:
- method: POST
name: gasless-submit
description: Submit Gasless Trade
call: 0x-api-gasless.gasless-submit
with:
0x-api-key: rest.0x-api-key
0x-version: rest.0x-version
body: rest.body
outputParameters:
- type: object
mapping: $.
- path: /gasless/status/{tradehash}
name: gasless-status-tradehash
description: REST surface for gasless-status-tradehash.
operations:
- method: GET
name: gasless-getstatus
description: Get Gasless Trade Status
call: 0x-api-gasless.gasless-getstatus
with:
0x-api-key: rest.0x-api-key
0x-version: rest.0x-version
chainId: rest.chainId
tradeHash: rest.tradeHash
outputParameters:
- type: object
mapping: $.
- path: /gasless/gasless-approval-tokens
name: gasless-gasless-approval-tokens
description: REST surface for gasless-gasless-approval-tokens.
operations:
- method: GET
name: gasless-getgaslessapprovaltokens
description: Get Gasless Approval Tokens
call: 0x-api-gasless.gasless-getgaslessapprovaltokens
with:
0x-api-key: rest.0x-api-key
0x-version: rest.0x-version
chainId: rest.chainId
outputParameters:
- type: object
mapping: $.
- path: /gasless/chains
name: gasless-chains
description: REST surface for gasless-chains.
operations:
- method: GET
name: gasless-chains
description: Get Supported Chains
call: 0x-api-gasless.gasless-chains
with:
0x-api-key: rest.0x-api-key
0x-version: rest.0x-version
outputParameters:
- type: object
mapping: $.
- type: mcp
namespace: 0x-api-gasless-mcp
port: 9090
transport: http
description: MCP adapter for 0x API — Gasless. One tool per consumed operation, routed inline through this capability's
consumes block.
tools:
- name: 0x-gasless-getprice
description: Get Gasless Price
hints:
readOnly: true
destructive: false
idempotent: true
call: 0x-api-gasless.gasless-getprice
with:
0x-api-key: tools.0x-api-key
0x-version: tools.0x-version
chainId: tools.chainId
buyToken: tools.buyToken
sellToken: tools.sellToken
sellAmount: tools.sellAmount
taker: tools.taker
recipient: tools.recipient
swapFeeRecipient: tools.swapFeeRecipient
swapFeeBps: tools.swapFeeBps
swapFeeToken: tools.swapFeeToken
tradeSurplusRecipient: tools.tradeSurplusRecipient
tradeSurplusMaxBps: tools.tradeSurplusMaxBps
slippageBps: tools.slippageBps
slippagePpm: tools.slippagePpm
excludedSources: tools.excludedSources
outputParameters:
- type: object
mapping: $.
- name: 0x-gasless-getquote
description: Get Gasless Quote
hints:
readOnly: true
destructive: false
idempotent: true
call: 0x-api-gasless.gasless-getquote
with:
0x-api-key: tools.0x-api-key
0x-version: tools.0x-version
chainId: tools.chainId
buyToken: tools.buyToken
sellToken: tools.sellToken
sellAmount: tools.sellAmount
taker: tools.taker
recipient: tools.recipient
swapFeeRecipient: tools.swapFeeRecipient
swapFeeBps: tools.swapFeeBps
swapFeeToken: tools.swapFeeToken
tradeSurplusRecipient: tools.tradeSurplusRecipient
tradeSurplusMaxBps: tools.tradeSurplusMaxBps
slippageBps: tools.slippageBps
slippagePpm: tools.slippagePpm
excludedSources: tools.excludedSources
outputParameters:
- type: object
mapping: $.
- name: 0x-gasless-submit
description: Submit Gasless Trade
hints:
readOnly: false
destructive: false
idempotent: false
call: 0x-api-gasless.gasless-submit
with:
0x-api-key: tools.0x-api-key
0x-version: tools.0x-version
body: tools.body
outputParameters:
- type: object
mapping: $.
- name: 0x-gasless-getstatus
description: Get Gasless Trade Status
hints:
readOnly: true
destructive: false
idempotent: true
call: 0x-api-gasless.gasless-getstatus
with:
0x-api-key: tools.0x-api-key
0x-version: tools.0x-version
chainId: tools.chainId
tradeHash: tools.tradeHash
outputParameters:
- type: object
mapping: $.
- name: 0x-gasless-getgaslessapprovaltokens
description: Get Gasless Approval Tokens
hints:
readOnly: true
destructive: false
idempotent: true
call: 0x-api-gasless.gasless-getgaslessapprovaltokens
with:
0x-api-key: tools.0x-api-key
0x-version: tools.0x-version
chainId: tools.chainId
outputParameters:
- type: object
mapping: $.
- name: 0x-gasless-chains
description: Get Supported Chains
hints:
readOnly: true
destructive: false
idempotent: true
call: 0x-api-gasless.gasless-chains
with:
0x-api-key: tools.0x-api-key
0x-version: tools.0x-version
outputParameters:
- type: object
mapping: $.