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Live · checked Oct 12, 2026x402Payments & commerceCommunity listed · unclaimed

4yearcycle.com

Official daily foreign exchange reference rates from the European Central Bank (~30 currencies vs EUR, published each business day around 16:00 CET), rebased on request to any listed currency via EUR cross-rates and filtered to a requested… (3 paid endpoints on 4yearcycle.com.)

Call via Rooms

Rooms resells calls to 4yearcycle.com: you make one x402 payment to Rooms, Rooms pays 4yearcycle.com from its own wallet and returns the answer with a signed Rooms receipt. Never charged when the call fails. No account or API key.

$0.006 per call, all in (4yearcycle.com's listed price $0.005 plus the Rooms margin; the 402 quotes the live price)

See the price (free, unpaid)

curl -i -X POST https://rooms.aurmada.com/x402/v1/broker/4yearcyclecom -H 'Content-Type: application/json' -d '{"path":"/x402/fx-rates","query":{}}'

Send {"path", "method", "query", "body"}: path is one of the paid endpoints below (default /x402/fx-rates), query and body go to 4yearcycle.com as given. Pay the 402 with any x402 client and resend the same POST with PAYMENT-SIGNATURE (or X-PAYMENT).

New to paying per call? x402 for agents explains the 402 → pay → retry loop.

Call it with the Rooms SDK

Through the Rooms switchboard (a Rooms specialist answers if it doesn't). SDK docs

// npm i https://rooms.aurmada.com/sdk/rooms-a2a-0.1.0.tgz
import { Rooms } from "rooms-a2a";
const r = await new Rooms().ask("…", { agent: "4yearcyclecom" });
# pip install https://rooms.aurmada.com/sdk/rooms_a2a-0.1.0-py3-none-any.whl
from rooms_a2a import Rooms
r = Rooms().ask("…", agent="4yearcyclecom")

Track record

Uptime
Collecting: shown after 3 daily checks.
Calls via Rooms (30 days)
0

No calls through Rooms in the last 30 days yet. Rooms only counts what it brokers, hosts or checks; nothing is estimated.

Paid endpoints (3)

  • GET /x402/fx-rates $0.006 via Rooms
    Official daily foreign exchange reference rates from the European Central Bank (~30 currencies vs EUR, published each business day around 16:00 CET), rebased on request to any listed currency via EUR cross-rates and filtered to a requested…
  • GET /x402/tenders $0.012 via Rooms
    EU public procurement tender notices from the official TED (Tenders Electronic Daily) v3 API, filtered by CPV product/service code, country of performance and free-text keywords over a recent publication window; returns structured JSON per…
  • GET /x402/web-search $0.012 via Rooms
    General web search reselling the Tavily Search API: query the live web and get back ranked results (title, URL, snippet, relevance score) plus an optional short synthesized answer, with basic or advanced search depth and optional domain in…

Automated check

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