Discover / currency-api-production-4a8d.up.railway.app

currency-api-production-4a8d.up.railway.app

■ Challenge detected

Current price, market cap, and 24h change for a single cryptocurrency by symbol or name (CoinGecko).

x402
Base
USDC

Listed price: $0.001
Challenge detected: 10 of the last 10 checks
Median response: 163 ms
Last checked: 17 Oct, 08:59 UTC
In our index since: 26 Sept 2026

Endpoint

curl -i https://currency-api-production-4a8d.up.railway.app/crypto/price
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.

3 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://currency-api-production-4a8d.up.railway.app

POST/crypto/price$0.001Current price, market cap, and 24h change for a single cryptocurrency by symbol or name (CoinGecko).
POST/crypto/prices$0.001Batch current prices, market caps, and 24h changes for up to 50 cryptocurrencies by symbol or name (CoinGecko).
POST/rates/historical$0.001Historical fiat exchange rates for a given date (YYYY-MM-DD, back to 1999-01-04) and base currency; optionally restrict to specific targets.

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

Showing 3 of 3 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/currency-api-production-4a8d.up.railway.app

Recent checks

29 Sept 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.17 Oct 2026

All 10 checks

When (UTC)	Result	HTTP	Response
17 Oct, 08:59 UTC	Challenge detected	402	196ms
16 Oct, 08:13 UTC	Challenge detected	402	192ms
14 Oct, 21:46 UTC	Challenge detected	402	103ms
13 Oct, 10:39 UTC	Challenge detected	402	188ms
11 Oct, 10:02 UTC	Challenge detected	402	200ms
9 Oct, 21:31 UTC	Challenge detected	402	734ms
8 Oct, 15:35 UTC	Challenge detected	402	106ms
7 Oct, 15:42 UTC	Challenge detected	402	138ms
6 Oct, 15:31 UTC	Challenge detected	402	112ms
29 Sept, 17:03 UTC	Challenge detected	402	107ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 17 Oct, 08:59 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 currency-api-production-4a8d.up.railway.app?

Its listed price is $0.001.

What payment terms does currency-api-production-4a8d.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 currency-api-production-4a8d.up.railway.app listed?

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

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