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

# Fiat-buyable assets

> Which tokens can be bought with fiat, keyed by chain.

Smaller than the full token catalog — fiat coverage is a subset of what can be swapped, so build your fiat picker from THIS rather than filtering the token list.

Cached for 5 minutes, so a newly-enabled asset can take that long to appear.



## OpenAPI

````yaml /api-reference/openapi.json get /onramp/config
openapi: 3.1.0
info:
  title: Hypermid API
  description: >-
    Price and execute cross-chain swaps, read reference data and payer balances,
    and quote the fiat on-ramp. Quotes return an executable `transactionRequest`
    your frontend submits directly, so Hypermid never custodies the funds.


    Payments — `checkout`, `deposit`, and `withdrawal` sessions — and
    payment-link management are available through these merchant REST endpoints
    and the [`@hypermid/sdk`](https://docs.hypermid.io/sdk/payments) package.
    Payer-facing routes are intentionally omitted.
  version: 0.2.0
  contact: {}
servers:
  - url: https://server.hypermid.io
    description: Production — live keys (sk_live_…)
  - url: https://server.hypermid.io
    description: Sandbox — test keys (sk_test_…), testnets only
security: []
tags:
  - name: payments
    description: >-
      Create and read payment sessions, manage webhooks, and configure payout
      addresses with a secret partner key.
  - name: payment links
    description: >-
      Create, read, version, and revoke reusable checkout payment links with a
      secret partner key.
  - name: quote
    description: >-
      Route pricing for the orchestration product. Returns an executable
      `transactionRequest` your frontend submits directly, so Hypermid never
      custodies the funds.
  - name: status
    description: >-
      Resolve the state of a submitted swap or transfer. Two endpoints with
      different audiences — see each one's description before choosing.
  - name: catalog
    description: >-
      Reference data an integration needs to render a picker: supported chains
      and tokens, prices, routable connections, and fee configuration. A sandbox
      key sees only testnets here.
  - name: balances
    description: Read a payer wallet's token balances across supported chains.
  - name: onramp
    description: >-
      The fiat rail — card and bank payment for crypto, quoted and settled
      through our onramp partner. Requires per-partner onramp credentials on
      your account.
  - name: webhooks
    description: >-
      Events Hypermid sends TO you when a session completes. These are requests
      we make to your server, not endpoints you call.
paths:
  /onramp/config:
    get:
      tags:
        - onramp
      summary: Fiat-buyable assets
      description: >-
        Which tokens can be bought with fiat, keyed by chain.


        Smaller than the full token catalog — fiat coverage is a subset of what
        can be swapped, so build your fiat picker from THIS rather than
        filtering the token list.


        Cached for 5 minutes, so a newly-enabled asset can take that long to
        appear.
      operationId: OnrampController_config
      parameters: []
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/OnrampConfigResponseDto'
      security:
        - x-api-key: []
components:
  schemas:
    OnrampConfigResponseDto:
      type: object
      properties:
        chains:
          type: object
          description: >-
            Map of provider chain code to the token symbols buyable with fiat on
            that chain. A subset of the full token catalog — fiat coverage is
            narrower than swap coverage.
          example:
            base:
              - ETH
              - USDC
            ethereum:
              - ETH
              - USDC
              - USDT
      required:
        - chains
  securitySchemes:
    x-api-key:
      type: apiKey
      in: header
      name: x-api-key
      description: >-
        Soft-auth read routes accept `x-api-key` with a publishable or partner
        key; money-moving routes require a secret partner key in `Authorization:
        Bearer`.

````