Central Banks & Monetary

CZEONIA overnight index average

Czech overnight index average (CZEONIA) published by CNB - the Czech analog to €STR and SOFR. Reports the volume-weighted overnight rate and the underlying traded volume (CZK millions, field volume_czk_mio). Published T+1: valid_for always points to the previous business day.

get/api/v1/cnb/czeonia

Query parameters

datestring nullable

Optional observation date (YYYY-MM-DD). Defaults to latest.

Response

Latest CZEONIA rate with the underlying traded volume in CZK millions.

Example response

{
  "meta": {
    "endpoint": "/api/v1/fred/us/cpi",
    "data_time": "2026-04-16T14:30:00Z",
    "response_time": "2026-04-16T14:30:12Z",
    "provider": "Sugra API v1.0.1",
    "data_age_days": 8.532,
    "source": "sugra_crypto",
    "attribution": "Short interest and Reg SHO daily short volume data is owned by and sourced from FINRA (Financial Industry Regulatory Authority).",
    "fallback_chain": [
      "sugra_crypto",
      "sugra_finance"
    ],
    "period": "2026-Q1",
    "notes": "the UKMTO report behind these counts is dated 2026-08-21 and is 11 days old"
  }
}

Changes

Changed in 2 of the 22 revisions of this API.15

Sep 1, 2026328d061c12ca3See the full diff
- ○
  added the optional property meta/data_age_days to the response with the 200 status
  response-optional-property-added
- ○
  added the optional property meta/notes to the response with the 200 status
  response-optional-property-added
- ○
  added the optional property meta/period to the response with the 200 status
  response-optional-property-added
Aug 8, 20264c4530760ba112See the full diff
- ○
  added the optional property code to the response with the 401 status
  response-optional-property-added
- ○
  added the optional property code to the response with the 429 status
  response-optional-property-added
- ○
  added the optional property code to the response with the 503 status
  response-optional-property-added
- ○
  added the optional property hint to the response with the 401 status
  response-optional-property-added
- ○
  added the optional property hint to the response with the 429 status
  response-optional-property-added
- ○
  added the optional property hint to the response with the 503 status
  response-optional-property-added
- ○
  added the optional property plan to the response with the 401 status
  response-optional-property-added
- ○
  added the optional property plan to the response with the 429 status
  response-optional-property-added
- ○
  added the optional property plan to the response with the 503 status
  response-optional-property-added
- ○
  added the optional property reason to the response with the 401 status
  response-optional-property-added
- ○
  added the optional property reason to the response with the 429 status
  response-optional-property-added
- ○
  added the optional property reason to the response with the 503 status
  response-optional-property-added

Full history