A WireMock simulation of U.S. Bank's REST API — covering pre-approval, loan application, booking, agreements, and merchant servicing for point-of-sale financing.
A shared instance of this template runs on a public endpoint — call it right now from curl, an SDK, or an AI agent. Responses are fixed examples and behavior can't be changed; rate limits apply.
Jump to the endpoints ↓Run this template as a mock API in WireMock Cloud for a private instance you control — edit stubs, add stateful scenarios, use dynamic response templating, and inspect requests in the log.
Open in WireMock Cloud (free) →Live sandbox · no signup, no API key
A running WireMock Cloud instance of this template, callable right now from a terminal, a script, or an AI agent.
Endpoints
POST Pre-approval application
curl -s -X POST 'https://rqekj.wiremockapi.cloud/onboarding/avvance-loan/v1/pre-approval/application' \
-H 'Content-Type: application/json' \
-d '{}'GET Reporting transactions
curl -s -X GET 'https://rqekj.wiremockapi.cloud/services/avvance-loan/v1/transactions'PUT Update product
curl -s -X PUT 'https://rqekj.wiremockapi.cloud/services/avvance-loan/v1/products' \
-H 'Content-Type: application/json' \
-d '{}'Spec catalog — Avvance Headless Loan API's (1.1.0) · 16 endpoints
| Method | Path | Summary |
|---|---|---|
| POST | /onboarding/avvance-loan/v1/application | Avvance Loan Application |
| POST | /onboarding/avvance-loan/v1/application-details | Retrieve Avvance Loan Application |
| POST | /onboarding/avvance-loan/v1/book | Book Avvance Loan |
| POST | /onboarding/avvance-loan/v1/loan-agreement | Generate Loan Agreement Document |
| POST | /onboarding/avvance-loan/v1/pre-approval/application | Pre-approval Application |
| POST | /onboarding/avvance-loan/v1/pre-approval/offers | Recalculate Offers |
| POST | /onboarding/avvance-loan/v1/price-breakdown | Get Price breakdown |
| POST | /services/avvance-loan/v1/enroll-merchant | Enroll Merchant |
| GET | /services/avvance-loan/v1/loan-status | Get Loan Status |
| POST | /services/avvance-loan/v1/manage-products | Manage Products via hosted UI |
| GET | /services/avvance-loan/v1/products | Get products |
| PUT | /services/avvance-loan/v1/products | Update Product |
| POST | /services/avvance-loan/v1/refund | Refund |
| GET | /services/avvance-loan/v1/transactions | Reporting |
| POST | /services/avvance-loan/v1/unenroll | Unenroll from |
| POST | /services/avvance-loan/v1/void | Void |
Unauthenticated WireMock Cloud demo sandbox for U.S. Bank — not an official U.S. Bank sandbox, and it returns simulated example data only.
Avvance Flex is the headless variant of U.S. Bank's point-of-sale financing product, and the mock keeps its defining chain intact: a pre-approval application mints a nine-digit id, an offer recalculation quoting that id succeeds while an unknown id draws a numbered 400 not-found — the same registry contract the loan application and its details route share. Approvals come back with a concrete offer — 60 months at 7.99% APR, $354.75 a month, total interest spelled out to the cent — booking flips the decision to BOOKED, and the loan-agreement route delivers an actual base64 PDF document. On the servicing side, merchant enrollment and product management answer with hosted-UI handoff URLs, the bridge into the bank's onboarding screens.
The intendedSpendingAmount field. The stub's response template reflects that value from your request, and when it's absent the rendered JSON is malformed — the one place in this template where the request body is load-bearing. Include a numeric amount and the response is clean, with the echoed figure sitting inside preApprovalDetails between the product's fixed 300 and 20000 bounds.
Depend on them. The offers, application-details, and downstream routes verify the id you quote against what the sandbox has issued, answering 400.40010-series errors otherwise — so the happy path and the stale-id path are both testable, and clients that thread ids through the full journey are validated on exactly that behavior.
A small but genuine PDF, base64-encoded in the data field with fileName and fileType alongside. Decode it and document-handling code — persistence, virus scanning stubs, presenting the agreement for signature — operates on real bytes with a real %PDF header, not a placeholder string.
Both resolve immediately to the same completed transaction: isTransactionComplete true, a payment transaction id, and a six-character approval code. The mock doesn't distinguish partial from full amounts or enforce time windows, so those policy branches belong in a private WireMock Cloud copy; what you verify here is the request contract and the settlement-shaped response.
At U.S. Bank's integration-test onboarding environment — the enrollment and product-management routes return SUCCESS envelopes whose applyUrl leads to the bank's merchant screens. Client code should treat the URL as an opaque redirect target; the mock confirms the handoff shape without the screens themselves being part of the simulation.
Vendor names identify APIs represented by WireMock template sources. This page does not imply vendor endorsement, certification, partnership, or official integration status.