> ## Documentation Index
> Fetch the complete documentation index at: https://docs.rail402.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# List supported payment kinds

> The payment kinds this instance serves, the extensions it supports and the addresses of its fee
sponsor and channel accounts. A payment in which any listed signer is the payer, a transaction or
operation source, or a party to an authorization is refused.




## OpenAPI

````yaml /api-reference/openapi.yaml get /supported
openapi: 3.1.0
info:
  title: Rail402
  version: 0.0.0
  summary: x402 facilitator and Bazaar discovery layer for Stellar.
  description: >
    The Rail402 HTTP service. `/supported`, `/verify` and `/settle` follow the
    x402 version 2 facilitator

    interface; `/discovery/*` serves the Bazaar catalog and search.


    Every endpoint except `/health`, `/ready` and `/metrics` is rate-limited per
    client address. A limited

    request gets HTTP 429 with a `Retry-After` header and the code
    `rate_limited`.
  license:
    name: Apache-2.0
    identifier: Apache-2.0
servers:
  - url: https://testnet.rail402.dev
    description: Hosted testnet facilitator (stellar:testnet only, no API key)
security: []
tags:
  - name: Facilitator
    description: x402 facilitator interface.
  - name: Discovery
    description: Bazaar catalog and natural-language search.
  - name: Operations
    description: Health, readiness, metrics and usage.
paths:
  /supported:
    get:
      tags:
        - Facilitator
      summary: List supported payment kinds
      description: >
        The payment kinds this instance serves, the extensions it supports and
        the addresses of its fee

        sponsor and channel accounts. A payment in which any listed signer is
        the payer, a transaction or

        operation source, or a party to an authorization is refused.
      operationId: getSupported
      responses:
        '200':
          description: Supported kinds.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SupportedResponse'
              example:
                kinds:
                  - x402Version: 2
                    scheme: exact
                    network: stellar:testnet
                    extra:
                      areFeesSponsored: true
                extensions:
                  - bazaar
                signers:
                  stellar:*:
                    - GAX6MVOC5O5VZCSCCY26RM33AKPODAEHAMUS76IT4DBAGED46VIOWEPC
                    - GDZREJ6UXJDL7IMLRMHP4F6RM37TF3WUGRB7GPE5G4IUIXKS6ISZPVEQ
        '429':
          $ref: '#/components/responses/RateLimited'
components:
  schemas:
    SupportedResponse:
      type: object
      required:
        - kinds
        - extensions
        - signers
      properties:
        kinds:
          type: array
          items:
            type: object
            required:
              - x402Version
              - scheme
              - network
            properties:
              x402Version:
                type: integer
              scheme:
                type: string
              network:
                type: string
              extra:
                type: object
                additionalProperties: true
        extensions:
          type: array
          items:
            type: string
        signers:
          type: object
          description: >-
            Facilitator addresses by CAIP family (`stellar:*`), sponsor first,
            then channel accounts.
          additionalProperties:
            type: array
            items:
              type: string
    ErrorBody:
      type: object
      required:
        - error
      properties:
        error:
          type: object
          required:
            - code
            - reason
            - retryable
          properties:
            code:
              type: string
            reason:
              type: string
            retryable:
              type: boolean
            details:
              type: object
              additionalProperties: true
  responses:
    RateLimited:
      description: Rate limited (`rate_limited`).
      headers:
        Retry-After:
          $ref: '#/components/headers/RetryAfter'
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorBody'
  headers:
    RetryAfter:
      description: Seconds until a retry can succeed.
      schema:
        type: integer

````

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