Get limits

POST getPairsParams

Get limits for floating and fixed rate transactions

warning

The method is deprecated. To get the limits, you need to use getFixRateForAmount/getExchangeAmount, but the transaction amount must be within limits.

A full-fledged replacement of this method is also coming soon. getPairsParams still will be available for some time.

HTTP request

https://api.changelly.com/v2/#getPairsParams

Request

Request

Header parameters

Name	Type	Required	Description
X-Api-Key	string	true	Your API key (SHA256 from Public Key)
X-Api-Signature	string	true	The query's serialized body signed by your private key according to the RSA-SHA256 method.

Body parameters

Name	Type	Required	Description
jsonrpc	string	true	JSON-RPC version.
id	string	true	Client's custom ID.
method	string	true	API method name.
params	array of objects	true	Request parameters.

params schema:

Name	Type	Required	Description
from	string	true	Payin currency code (in lowercase).
to	string	true	Payout currency code (in lowercase).

Payload

application/json

{
  "jsonrpc": "2.0",
  "id": "test",
  "method": "getPairsParams",
  "params": [
    {
      "from": "eth",
      "to": "btc"
    },
    {
      "from": "btc",
      "to": "eth"
    }
  ]
}  

cURL

curl --location --request POST 'https://api.changelly.com/v2' \
--header 'X-Api-Key: {{apiKey}}' \
--header 'X-Api-Signature: {{sign}}' \
--data-raw '{
    "id": "test",
    "jsonrpc": "2.0",
    "method": "getPairsParams",
    "params": [
      {
        "from": "eth",
        "to": "btc"
      },
      {
        "from": "btc",
        "to": "eth"
      }
    ]
}'

Response

Example

Sample response

application/json

{
  "jsonrpc": "2.0",
  "id": "test",
  "result": [
    {
      "from": "eth",
      "to": "btc",
      "minAmountFloat": "0.0465",
      "maxAmountFloat": "449172.45240999997",
      "minAmountFixed": "0.0775",
      "maxAmountFixed": "100"
    },
    {
      "from": "btc",
      "to": "eth",
      "minAmountFloat": "0.0015",
      "maxAmountFloat": "25629.527850432485",
      "minAmountFixed": "0.0025",
      "maxAmountFixed": "3.2138"
    }
  ]
}

Success

Response params

Name	Type	Description
jsonrpc	string	JSON-RPC version.
id	string	Client's custom ID.
result	array of objects	Limits for pairs.

result schema:

Name	Type	Description
from	string	Payin currency code.
to	string	Payout currency code.
minAmountFloat	string	Minimum exchangeable amount for float rate transactions.
maxAmountFloat	string	Maximum exchangeable amount for float rate transactions.
minAmountFixed	string	Minimum exchangeable amount for fixed rate transactions.
maxAmountFixed	string	Maximum exchangeable amount for fixed rate transactions.

Errors

Error schema

Name	Type	Description
jsonrpc	string	JSON-RPC version.
id	string	Client's custom ID.
error	object	Possible errors.
»code	integer	Error code.
»message	string	Error message.

Error codes

Code	Message	Description
-32600	Error: You reached requests limit {limit} rps	You have been sending more than 10 requests per second.
-32602	Invalid currency: {currency} temporary disabled	This currency is currently disabled.
-32602	Invalid currency: {currency} is temporary disabled on API as output currency	This currency is currently disabled on API as an output currency.
-32602	Invalid currency: {currency} is temporary disabled on API as input currency	This currency is currently disabled on API as an input currency.
-32602	Invalid currency: {currency} not found	This currency is not listed on Changelly or the ticker is invalid.
-32602	Parameter {param} is invalid	You've specified an invalid parameter.
-32603	Internal Error or Error	Most likely, the problem is on our side. Further investigation is required.