An RBA cash rate API returns the Reserve Bank of Australia target as JSON under RBA_CASH_RATE. On Interest Rates API that is GET /api/v1/latest with query api_key and symbols=RBA_CASH_RATE. Starter allows 1 symbol per latest request. US 10Y is a Bonds-API H1.
Starter is $19/mo (250 calls, 90-day range) with a 7-day trial. MCP: interestratesapi.com/mcp.
Request: latest RBA cash rate
curl "https://interestratesapi.com/api/v1/latest?api_key=YOUR_KEY&symbols=RBA_CASH_RATE"Response: live Interest Rates API (dated 2026-08-31)
{
"success": true,
"date": "2026-08-31",
"base": "AUD",
"rates": {
"RBA_CASH_RATE": 4.35
}
}The latest print carries the RBA observation date, not necessarily today. Convert is a sibling path (Starter allows 2 symbols there).
Go live
1. Register — 7-day trial.
2. Copy api_key.
3. GET /api/v1/latest with symbols=RBA_CASH_RATE.
4. Store rates.RBA_CASH_RATE and date.
