Current Stripe-backed plan prices and rate limits

Return the current price, included request allowance and overage rate for every plan. **Public — no authentication required.** Numbers come from Stripe and are cached for 24 hours, so this is the authoritative source for what the API actually charges rather than a hardcoded table. Check `source` before displaying: `stripe` or `cache` are live, while `fallback` means Stripe was unreachable and the cache was empty, so the values are built-in defaults that may be stale. All money is in **cents**, and `overage_unit_cents` is fractional — `0.35` means $0.0035 per request.

curl -X GET "https://example.com/pricing"

{  "currency": "string",  "fetched_at": "2019-08-24T14:15:22Z",  "plans": {    "property1": {      "annual_cents": 0,      "included_requests": 0,      "monthly_cents": 0,      "overage_unit_cents": 0    },    "property2": {      "annual_cents": 0,      "included_requests": 0,      "monthly_cents": 0,      "overage_unit_cents": 0    }  },  "source": "stripe"}