〰️ Check Limits

Check whether limits are reached before sending meta transaction
Developers can apply limits on the usage of meta transactions from the Dashboard on a per DApp, per User and per API for each user.
So before sending meta transactions on the client-side, developers can use this API to check whether the limits have already reached or not. If limits are reached developers can either fall back to the default web3 provider, show a message to the user that your free transaction limits have been exhausted, and let the user pay the gas fee or show an error message to the user.
get
Check Limits
https://api.biconomy.io/api/v1/dapp/checkLimits?userAddress=<user_address>&apiId=<api_id>
This API lets you know the current status of DApp limits for a particular user address and api id (smart contract method).
In case when limits are exhausted, response will contain information about what was the type of limits applied and when the limits will be reset.
Request
Response
Request
Headers
x-api-key
required
string
API Key can be found on the Dashboard on view DApp page under Keys section. This is specific to a DApp.
Query Parameters
apiId
required
string
Api Id corresponding to smart contract methods against which limits needs to be checked for given user.
This can be get from the dashboard under "Manage API" section
userAddress
required
string
Address of the user for whom the limits needs to be checked.
Response
200: OK
When limits are not exhausted. "allowed" field in the response should be checked first if limits are allowed or not.
If "allowed" == true, then limits are not consumed and user can do meta transaction without any limit failure.

If "allowed" == false then limits are exhausted, in this case "code" field will have different values based on the limit exhausted as mentioned below
code = 150   when DApp limits are exhausted
code = 151   when User limits are exhausted
code = 152   when API/User limits are exhausted 

In case of failure, "limit" key will contain information about type of limit exhausted and the limit reset time (in GMT)

limit.type = 0 || 1 
0 if the limit was applied on gas usage.
1 if the limit was applied on the number of meta transaction.

limit.resetTime = <number of milliseconds since epoch time in GMT timezone>
Please convert it to local timezone if this is needed to show to the end user.

limit.limitLeft = <limit applied - limit usage>
Difference between limit value applied on the dashboard and limit usage done by the user. This will be either 0 or negative value.
// When limits are not exhausted
{
  "code": 200,
  "message": "Limits are not consumed",
  "responseCode": 200,
  "allowed": true
}
​
// When DApp limit is exhausted
{
  "code": 150,
  "message": "DApp limit reached",
  "responseCode": 200,
  "limit": {
    "allowed": false,
    "type": 0,
    "limitLeft": -0.001542277,
    "resetTime": 1594684800000
  },
  "allowed": false
}
​
// When User limit is exhausted
{
  "code": 151,
  "message": "User limit reached",
  "responseCode": 200,
  "limit": {
    "allowed": false,
    "type": 1,
    "limitLeft": 0,
    "resetTime": 1594684800000
  },
  "allowed": false
}
​
​
// When API/User limit is exhausted
{
  "code": 152,
  "message": "API limit reached",
  "responseCode": 200,
  "limit": {
    "allowed": false,
    "type": 1,
    "limitLeft": 0,
    "resetTime": 1594684800000
  },
  "allowed": false
}
​
Example Curl Request
curl --request GET  --url 'https://api.biconomy.io/api/v1/dapp/checkLimits?userAddress=<USER_ADDRESS>&apiId=<API_ID_HERE>'  --header 'x-api-key: <API_KEY_HERE>'
​
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〰️ Check Limits

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Check Limits
