Spec

Code snippets

curl "https://api.oanor.com/fxcross-api/v1/meta" \
  -H "x-oanor-key: oanor_test_..."

await fetch("https://api.oanor.com/fxcross-api/v1/meta", {
  headers: { "x-oanor-key": "oanor_test_..." }
});

$ch = curl_init("https://api.oanor.com/fxcross-api/v1/meta");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);

import requests
requests.get(
    "https://api.oanor.com/fxcross-api/v1/meta",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "note": "Each leg is FROMTO:rate, where 1 FROM = rate TO (e.g. EURUSD:1.08). Legs must chain (each TO matches the next FROM).",
        "source": "Computed in-process from caller-supplied quoted rates (no upstream)",
        "service": "fxcross-api",
        "endpoints": {
            "GET /v1/meta": "This document.",
            "GET /v1/chain": "Convert an amount along a path of pairs, per hop (legs=EURUSD:1.08,USDJPY:150&amount=1000).",
            "GET /v1/cross": "Implied cross from chained pairs + discrepancy vs a quoted cross (legs=EURUSD:1.08,USDJPY:150&quoted=163).",
            "GET /v1/triangular": "Triangular-arbitrage detection on a closed 3-rate loop (legs=EURUSD:1.08,USDJPY:150,JPYEUR:0.00617)."
        },
        "description": "Live cross-rate, triangular-arbitrage and conversion-path maths computed on demand from the quoted rates you pass in. The cross endpoint chains two pairs sharing a currency into the implied third rate plus the discrepancy vs a quoted cross; the triangular endpoint detects a triangular-arbitrage opportunity in a closed loop of three rates (cycle product, profit %, winning direction, payout on a notional); the chain endpoint converts an amount along a path of pairs with a per-hop breakdown. An FX cross-rate and arbitrage engine that reasons across several pairs at once, distinct from pip/lot calculators and single-pair converters. Computed locally, nothing stored.",
        "upstream_status": "ok"
    },
    "meta": {
        "timestamp": "2026-06-11T07:49:28.224Z",
        "request_id": "81fdafe9-b2a4-4d11-b7fb-be3d7cd5e32b"
    },
    "status": "ok",
    "message": "Meta",
    "success": true
}