Discover / qr-api-production-1836.up.railway.app

qr-api-production-1836.up.railway.app

■ Challenge detected

Generate a QR code PNG (returned base64-encoded in JSON) for any text or URL using default black-on-white styling.

x402
Base
USDC

Listed price: $0.001
Challenge detected: 9 of the last 9 checks
Median response: 142 ms
Last checked: 16 Oct, 23:40 UTC
In our index since: 26 Sept 2026

Endpoint

curl -i https://qr-api-production-1836.up.railway.app/generate/basic
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.

4 listed endpoints · on x402 Bazaar

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://qr-api-production-1836.up.railway.app

POST/generate/basic$0.001Generate a QR code PNG (returned base64-encoded in JSON) for any text or URL using default black-on-white styling.
POST/generate/batch$0.001Generate up to 20 QR codes in one call; returns a per-item record with QR metadata and the base64 PNG, or an error per item.
POST/generate/styled$0.001Generate a styled QR code PNG (base64 in JSON): custom foreground/background hex colours, module size, border, and error-correction level.
POST/decode$0.001Decode QR/barcodes from a base64-encoded image; returns each detected code's type, decoded text, bounding rect, and polygon.

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 4 of 4 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/qr-api-production-1836.up.railway.app

Recent checks

4 Oct 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.16 Oct 2026

All 9 checks

When (UTC)	Result	HTTP	Response
16 Oct, 23:40 UTC	Challenge detected	402	175ms
15 Oct, 19:10 UTC	Challenge detected	402	144ms
14 Oct, 14:31 UTC	Challenge detected	402	158ms
12 Oct, 10:53 UTC	Challenge detected	402	121ms
10 Oct, 15:44 UTC	Challenge detected	402	110ms
9 Oct, 12:40 UTC	Challenge detected	402	111ms
8 Oct, 09:33 UTC	Challenge detected	402	240ms
7 Oct, 03:32 UTC	Challenge detected	402	116ms
4 Oct, 05:04 UTC	Challenge detected	402	142ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 16 Oct, 23:40 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.

What price is recorded for qr-api-production-1836.up.railway.app?

Its listed price is $0.001.

What payment terms does qr-api-production-1836.up.railway.app advertise?

The listing advertises x402, Base and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is qr-api-production-1836.up.railway.app listed?

In x402 Bazaar. Superstables first indexed it on 26 Sept 2026.

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