Exchange Prepare

POST

/v1/exchange/prepare

curl --request POST \
  --url https://api.parasta.io/v1/exchange/prepare \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{ "networkId": "example", "target": "example", "items": [ { "source": "example", "amount": "example", "slippage": "example" } ], "direction": "exactInput", "minimumReceived": "example" }'

• API base URL (example — actual domain is finalized at deployment). All API paths start with `/v1/...`, so the actual endpoint takes the form `https://api.parasta.io/v1/...`.
• Relative.

Authorizations

• BearerAuth

Request Body ^required

Media type application/json

object

networkId

required

string

target

required

string

items

required

Array<object>

>= 1 items

object

source

required

string

amount

required

string

slippage

string

direction

string

default: exactInput

Allowed values: exactInput exactOutput

minimumReceived

string

Responses

200

OK

Media type application/json

object

signing

object

description

string

items

required

Array<object>

object

id

required

string

parameter

required

Time- and state-independent parameters of a signing slot. One of two modes: on-chain signing (algorithm + keyUri + domain) or 2FA (authMethod).

object

algorithm

E.g.: ecdsa-secp256k1-keccak, eip191-personal-sign, eip712-erc4337-userop-v1, eip712-erc4337-merkleroot-v1.

string

keyUri

string

domain

object

key

additional properties

any

authMethod

string

Allowed values: passkey fido2 kyc totp

payload

Present only for on-chain signing slots. Empty for 2FA slots.

string

summary

object

target

string

items

Array<object>

object

source

string

sourceAmount

string

estimatedReceived

string

minimumReceived

string

exchangeRate

string

priceImpact

string

slippage

string

intermediary

string

nullable

networkName

string

Example

{
  "signing": {
    "items": [
      {
        "parameter": {
          "algorithm": "ecdsa-secp256k1-keccak",
          "authMethod": "passkey"
        }
      }
    ]
  }
}