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

# List payment link chains



## OpenAPI

````yaml /openapi.yaml get /collections/chains
openapi: 3.1.0
info:
  title: Remitflex API
  version: 1.0.0
  description: >
    Programmatic access to Remitflex payment routes, fiat rates, customers, and
    transactions.


    **Dashboard:** Create API keys at https://dashboard.remitflex.io


    **Authentication:** Send your API key as `Authorization: Bearer
    rmf_live_...` or `rmf_test_...`.


    **Idempotency:** Mutating requests (`POST`, `PUT`, `PATCH`, `DELETE`)
    require an `Idempotency-Key` header when authenticated with an API key.
servers:
  - url: http://localhost:4000/v1
    description: Local development
  - url: https://api.remitflex.io/v1
    description: Production
security:
  - ApiKeyAuth: []
paths:
  /collections/chains:
    get:
      tags:
        - Payment links
      summary: List payment link chains
      operationId: listCollectionChains
      responses:
        '200':
          $ref: '#/components/responses/ChainsDiscovery'
      security:
        - ApiKeyAuth: []
components:
  responses:
    ChainsDiscovery:
      description: Networks payers can send from, and networks you can settle to
      content:
        application/json:
          schema:
            allOf:
              - $ref: '#/components/schemas/SuccessEnvelope'
              - type: object
                properties:
                  data:
                    $ref: '#/components/schemas/DiscoveryNetworks'
          examples:
            success:
              $ref: '#/components/examples/ListChainsResponse'
  schemas:
    SuccessEnvelope:
      type: object
      properties:
        status:
          type: string
          example: success
        message:
          type: string
        data:
          nullable: true
    DiscoveryNetworks:
      type: object
      required:
        - origins
        - settlements
        - routing
      properties:
        origins:
          type: array
          description: Networks your payers can send crypto from.
          items:
            $ref: '#/components/schemas/DiscoveryNetwork'
        settlements:
          type: array
          description: Networks where you receive stablecoins (Base or Solana).
          items:
            $ref: '#/components/schemas/DiscoveryNetwork'
        routing:
          type: array
          description: >-
            Grouped pay-in options — one entry per origin token with nested
            settlement choices.
          items:
            $ref: '#/components/schemas/OriginRouting'
    DiscoveryNetwork:
      type: object
      required:
        - key
        - network
        - addressFormat
        - tokens
      properties:
        key:
          type: string
          description: >-
            Use as `originChainKey` or `destinationChainKey` when creating a
            route or link.
        network:
          type: string
          description: Human-readable network name (Bitcoin, Ethereum, Base, Solana, …).
        addressFormat:
          type: string
          enum:
            - evm
            - solana
            - bitcoin
            - tron
        minDepositUsd:
          type: number
        tokens:
          type: array
          description: >-
            Token symbols payers can send (origins) or you can receive
            (settlements).
          items:
            type: string
          example:
            - USDT
            - USDC
            - ETH
    OriginRouting:
      type: object
      required:
        - key
        - network
        - token
        - settlements
      properties:
        key:
          type: string
          description: Origin network key for `originChainKey`.
        network:
          type: string
        token:
          type: string
        settlements:
          type: array
          items:
            $ref: '#/components/schemas/SettlementRoute'
    SettlementRoute:
      type: object
      required:
        - key
        - network
        - tokens
      properties:
        key:
          type: string
        network:
          type: string
        tokens:
          type: array
          items:
            type: string
  examples:
    ListChainsResponse:
      value:
        status: success
        message: Supported networks fetched
        data:
          origins:
            - key: tron
              network: Tron
              addressFormat: tron
              tokens:
                - USDT
            - key: bitcoin
              network: Bitcoin
              addressFormat: bitcoin
              tokens:
                - BTC
            - key: bnb
              network: BSC
              addressFormat: evm
              tokens:
                - BNB
                - USDT
                - USDC
            - key: ethereum
              network: Ethereum
              addressFormat: evm
              tokens:
                - ETH
                - USDC
                - USDT
            - key: base
              network: Base
              addressFormat: evm
              tokens:
                - ETH
                - USDC
                - USDT
          settlements:
            - key: base
              network: Base
              addressFormat: evm
              tokens:
                - USDC
                - USDT
            - key: solana
              network: Solana
              addressFormat: solana
              tokens:
                - USDC
                - USDT
          routing:
            - key: tron
              network: Tron
              token: USDT
              settlements:
                - key: base
                  network: Base
                  tokens:
                    - USDC
                    - USDT
                - key: solana
                  network: Solana
                  tokens:
                    - USDC
                    - USDT
            - key: bitcoin
              network: Bitcoin
              token: BTC
              settlements:
                - key: base
                  network: Base
                  tokens:
                    - USDC
                    - USDT
                - key: solana
                  network: Solana
                  tokens:
                    - USDC
                    - USDT
  securitySchemes:
    ApiKeyAuth:
      type: http
      scheme: bearer
      description: >
        API key created in the Remitflex Dashboard at dashboard.remitflex.io
        (`rmf_live_...` or `rmf_test_...`).

        Key management endpoints require a dashboard JWT and are not part of
        this reference.

````