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Uniswap

Uniswap Approval API

The Approval API from Uniswap — 1 operation(s) for approval.

Documentation Provider Profile APIs.io OpenAPI GitHub

Uniswap Approval API is one of 14 APIs that Uniswap publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

This API exposes 6 JSON Schema definitions.

Tagged areas include Approval. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and 6 JSON Schemas.

This API exposes 1 operation across 1 path, and defines 23 schemas. It is described by OpenAPI 3.0.0, at version 1.0.0.

Requests are made against a single base URL, https://trade-api.gateway.uniswap.org/v1.

1 operations 1 paths 23 schemas 1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.0.0
API Version
1.0.0
Server
https://trade-api.gateway.uniswap.org/v1
Authentication
API Key
Resource Areas
1

Authentication & Security 1

Uniswap Approval API declares 1 security scheme for authenticating requests. An API key is passed in the header as x-api-key (apiKey). By default, every request must be authenticated.

Paths & Operations 1

Across 1 path, the API surfaces 1 operation — 1 POST. Each is listed below with its method, path, parameters, and response codes.

Approval 1
POST
/check_approval
Check if token approval is required
check_approval 1 param body → 200400401404429500504

Schemas 23

The contract defines 23 schemas that model the data the API accepts and returns. The most detailed are TransactionRequest (9 properties), ApprovalRequest (8 properties), ApprovalResponse (5 properties), Err429 (2 properties). Each schema is shown below with its type and property counts.

tokenAmount
string
The quantity of tokens denominated in the token's base units. (For example, for an ERC20 token one token is 1x10^18 base units. For one USDC token one token is…
ApprovalResponse
object
5 properties 3 required
ChainId
number
The unique ID of the blockchain. For a list of supported chains see the [FAQ](https://api-docs.uniswap.org/guides/faqs).
ApprovalRequest
object
8 properties 4 required
Err500
object
2 properties
senderWalletAddress
string
The wallet address which will be used to send the token.
inputToken
string
The token which will be sent, specified by its token address. For a list of supported tokens, see the [FAQ](https://api-docs.uniswap.org/guides/faqs).
RequestId
string
A unique ID for the request.
Err404
object
2 properties
Err504
object
2 properties
gasFee
string
The total estimated gas cost of this transaction (eg. gasLimit multiplied by maxFeePerGas) in the base unit of the chain.
TransactionRequest
object
9 properties 5 required
maxFeePerGas
string
The sum of the base fee and priority fee. Subtracting maxPriorityFeePerGas from this value will yield the base fee to be paid for this transaction.
Err400
object
2 properties
gasLimit
string
The maximum units of gas that will be consumed by this transaction.
receiverWalletAddress
string
The wallet address which will receive the token.
Err401
object
2 properties
gasPrice
string
The cost per unit of gas.
includeGasInfo
boolean
If set to true, the response will include the estimated gas fee for the proposed transaction.
Err429
object
2 properties
Urgency
string
The urgency impacts the estimated gas price of the transaction. The higher the urgency, the higher the gas price, and the faster the transaction is likely to b…
outputToken
string
The token which will be received, specified by its token address. For a list of supported tokens, see the [FAQ](https://api-docs.uniswap.org/guides/faqs).
maxPriorityFeePerGas
string
The maximum tip to the block builder. Adjusted based upon the urgency specified in the request.

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

uniswap-approval-api-openapi.yml Raw ↑

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#Approval
← Back to U APIs
API Details
ID
uniswap:uniswap-approval-api
Server
https://trade-api.gateway.uniswap.org/v1
Docs
https://developers.uniswap.org/
Provider
Uniswap
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