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GET /v1/gain

Inverting / non-inverting gain

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10 free calls per day — no sign-up, no API key. Goes through the oanor gateway.

Custom headers (optional)
api.oanor.com/opamp-api

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Code snippets

curl "https://api.oanor.com/opamp-api/v1/gain" \
  -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/opamp-api/v1/gain", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/opamp-api/v1/gain");
curl_setopt($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/opamp-api/v1/gain",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

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

{
    "data": {
        "gain": -10,
        "formula": "Av = −Rf/Rin.",
        "gain_db": 20,
        "configuration": "inverting",
        "gain_magnitude": 10,
        "input_resistance_ohm": 10000,
        "feedback_resistance_ohm": 100000
    },
    "meta": {
        "timestamp": "2026-06-04T10:18:38.664Z",
        "request_id": "66fbddd3-d259-48c5-bb8c-5aad819b12ce"
    },
    "status": "ok",
    "message": "Inverting / non-inverting gain",
    "success": true
}