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

# Query Supported Chains and Currencies

> Queries the networks and currencies supported by GatePay for static address collection.

## Overview

This page documents the `GET /v1/pay/fixedaddress/chains` endpoint. The full schema, parameters, and examples are rendered from the linked OpenAPI definition above.

Queries the networks and currencies supported by GatePay for static address collection.

## Notes

* Authentication uses the standard GatePay signed headers.
* This page documents the standard merchant endpoint.
* For shared signing rules, see [/api-reference/version/100/en/common/securityAndSignature](/api-reference/version/100/en/common/securityAndSignature).


## OpenAPI

````yaml /api-reference/version/100/en/openapi/fixed-address-openapi.json GET /v1/pay/fixedaddress/chains
openapi: 3.1.0
info:
  title: GatePay API - Static Address Collection
  version: 1.0.0
servers:
  - url: https://openplatform.gateapi.io
security: []
paths:
  /v1/pay/fixedaddress/chains:
    get:
      summary: Query Supported Networks and Currencies
      description: >-
        Queries the networks and currencies supported by GatePay for static
        address collection.
      operationId: getFixedAddressChains
      parameters:
        - $ref: '#/components/parameters/X-GatePay-Certificate-ClientId'
        - $ref: '#/components/parameters/X-GatePay-Signature'
        - $ref: '#/components/parameters/X-GatePay-Timestamp'
        - $ref: '#/components/parameters/X-GatePay-Nonce'
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ChainsResponse'
              examples:
                success:
                  value:
                    status: SUCCESS
                    code: '000000'
                    errorMessage: ''
                    data:
                      Chains:
                        - chain: ETH
                          showChainNameEn: ETH/ERC20
                          currencies:
                            - USDT
                            - DAI
                            - ETH
                            - MATIC
                            - USDC
                        - chain: TRX
                          showChainNameEn: Tron/TRC20
                          currencies:
                            - USDT
components:
  parameters:
    X-GatePay-Certificate-ClientId:
      name: X-GatePay-Certificate-ClientId
      in: header
      required: true
      description: >-
        The clientId assigned when the merchant registers an application in the
        Gate merchant console.
      schema:
        type: string
        example: 4186d0c6-6a35-55a9-8dc6-5312769dbff8
    X-GatePay-Signature:
      name: X-GatePay-Signature
      in: header
      required: true
      description: >-
        Request signature. GatePay uses this signature to verify whether the
        request is valid.
      schema:
        type: string
    X-GatePay-Timestamp:
      name: X-GatePay-Timestamp
      in: header
      required: true
      description: >-
        UTC timestamp in milliseconds when the request is generated. GatePay
        will not process requests where the difference from the receive time
        exceeds 10 seconds.
      schema:
        type: string
        example: '1672905655498'
    X-GatePay-Nonce:
      name: X-GatePay-Nonce
      in: header
      required: true
      description: >-
        Random string. Must comply with HTTP header rules; recommended length is
        within 32 characters, composed of digits and letters.
      schema:
        type: string
        example: '9578'
  schemas:
    ChainsResponse:
      type: object
      properties:
        status:
          type: string
          description: Response status
          example: SUCCESS
          enum:
            - SUCCESS
            - FAIL
        code:
          type: string
          description: Response code
        errorMessage:
          type: string
          description: Error description
        data:
          type: object
          properties:
            Chains:
              type: array
              items:
                $ref: '#/components/schemas/FixedChainItem'
    FixedChainItem:
      type: object
      properties:
        chain:
          type: string
          description: Network
        showChainNameEn:
          type: string
          description: Network English name
        currencies:
          type: array
          items:
            type: string
          description: Currencies supported under this network

````