> ## Documentation Index
> Fetch the complete documentation index at: https://etherspot.fyi/llms.txt
> Use this file to discover all available pages before exploring further.

# checkWhitelist

> Check an address is whitelisted

Example values you can use to demo the API:

```json theme={null}
{
  "params": [
    "0x725404c8Eead111d9E6DFE118c535F43402a9511"
  ]}
```

Example response:

```json theme={null}
{
  "message": "Already added"
}
```


## OpenAPI

````yaml arka post /checkWhitelist
openapi: 3.0.3
info:
  title: Etherspot Arka Paymaster API
  version: 3.1.3
servers:
  - url: https://rpc.etherspot.io/paymaster
security: []
tags:
  - name: Arka
    externalDocs:
      description: Find out more about Arka
      url: https://etherspot.fyi/arka
externalDocs:
  description: Find out more about Arka
  url: https://etherspot.fyi/arka
paths:
  /checkWhitelist:
    post:
      tags:
        - Arka
      summary: checkWhitelist
      description: Check an address is whitelisted
      operationId: checkWhitelist
      parameters:
        - in: query
          name: apiKey
          schema:
            type: string
          description: Arka API key
        - in: query
          name: chainId
          schema:
            type: string
          description: Chain ID
      requestBody:
        description: Check an address is whitelisted
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/checkWhitelist'
        required: true
      responses:
        '200':
          description: Successful operation
components:
  schemas:
    checkWhitelist:
      type: object
      properties:
        params:
          type: array
          items:
            type: string

````