# European Central Bank API > Live official euro-area monetary data from the ECB Data Portal — no key, nothing cached. This is the money side of the euro, not exchange rates. The key-rates endpoint returns the ECB's three policy interest rates — the deposit facility rate, the main refinancing operations (MRO) rate and the marginal lending facility rate — the rates that set the price of money across the euro area, each with the date it took effect and recent history (deposit facility around 2.00%, MRO 2.15%). The estr endpoint returns €STR, the euro short-term rate, the overnight benchmark that replaced EONIA, with its recent path. The yield-curve endpoint returns the euro-area AAA-rated government bond spot-rate curve across maturities from 3 months to 30 years, with the 10-year-minus-1-year slope. Everything is the ECB's own published series. This is the euro-rates layer for any fixed-income, macro, forex or research app that needs authoritative European central-bank numbers. Live from the ECB, nothing stored. Distinct from exchange-rate APIs and from the Bank of Canada and US-Treasury APIs — this is the ECB's policy rates, €STR and euro yield curve. 4 endpoints. ## Authentication All requests require your oanor API key in the `x-oanor-key` header. Get one at https://www.oanor.com/developer/keys. ```bash curl -H "x-oanor-key: oanor_live_…" "https://api.oanor.com/ecb-api/..." ``` ## Pricing - **Free** (Free) — 12,500 calls/Mo, 3 req/s - **Starter** ($8/Mo) — 148,000 calls/Mo, 8 req/s - **Pro** ($21/Mo) — 670,000 calls/Mo, 15 req/s - **Scale** ($50/Mo) — 3,350,000 calls/Mo, 30 req/s ## Endpoints ### Rates #### `GET /v1/estr` — €STR euro short-term rate **Parameters:** - `history` (query, optional, string) — Past values to include (1-60) Example: `10` **Example:** ```bash curl -H "x-oanor-key: $KEY" \ "https://api.oanor.com/ecb-api/v1/estr?history=10" ``` **Response:** ```json { "data": { "date": "2026-06-08", "name": "€STR (Euro Short-Term Rate)", "source": "European Central Bank", "history": [ { "date": "2026-05-26", "rate_pct": 1.932 }, { "date": "2026-05-27", "rate_pct": 1.932 }, { "date": "2026-05-28", "rate_pct": 1.933 }, { "date": "2026-05-29", "rate_pct": 1.93 }, { "date": "2026-06-01", "rate_pct": 1.931 }, { "date": "2026-06-02", "rate_pct": 1.932 }, { "date": "2026-06-03", "rate_pct": 1.931 }, { "date": "2026-06-04", "rate_pct": 1.933 }, { "date": "2026-06-05", "rate_pct": 1.931 }, { "date": "2026-06-08", "rate_pct": 1.93 } ], "rate_pct": 1.93 }, "meta": { "timestamp": "2026-06-09T11:39:36.731Z", "request_id": "32460fa9-e12c-47dc-b21e-ec38c1333376" }, "status": "ok", "message": "€STR retrieved successfully", "success": true } ``` #### `GET /v1/key_rates` — ECB policy interest rates **Parameters:** - `history` (query, optional, string) — Past values to include (1-20) Example: `3` **Example:** ```bash curl -H "x-oanor-key: $KEY" \ "https://api.oanor.com/ecb-api/v1/key_rates?history=3" ``` **Response:** ```json { "data": { "rates": { "deposit_facility": { "history": [ { "date": "2025-03-12", "rate_pct": 2.5 }, { "date": "2025-04-23", "rate_pct": 2.25 }, { "date": "2025-06-11", "rate_pct": 2 } ], "rate_pct": 2, "effective_date": "2025-06-11" }, "marginal_lending_facility": { "history": [ { "date": "2025-03-12", "rate_pct": 2.9 }, { "date": "2025-04-23", "rate_pct": 2.65 }, { "date": "2025-06-11", "rate_pct": 2.4 } ], "rate_pct": 2.4, "effective_date": "2025-06-11" }, "main_refinancing_operations": { "history": [ { "date": "2025-03-12", "rate_pct": 2.65 }, { "date": "2025-04-23", "rate_pct": 2.4 …(truncated, see openapi.json for full schema) ``` #### `GET /v1/yield_curve` — Euro-area AAA bond yield curve **Example:** ```bash curl -H "x-oanor-key: $KEY" \ "https://api.oanor.com/ecb-api/v1/yield_curve" ``` **Response:** ```json { "data": { "date": "2026-06-08", "basis": "AAA-rated central government bonds, spot rate", "count": 7, "curve": [ { "tenor": "3M", "months": 3, "yield_pct": 2.2654 }, { "tenor": "6M", "months": 6, "yield_pct": 2.3824 }, { "tenor": "1Y", "months": 12, "yield_pct": 2.5225 }, { "tenor": "2Y", "months": 24, "yield_pct": 2.6236 }, { "tenor": "5Y", "months": 60, "yield_pct": 2.7495 }, { "tenor": "10Y", "months": 120, "yield_pct": 3.0921 }, { "tenor": "30Y", "months": 360, "yield_pct": 3.5611 } ], "region": "Euro area", "source": "European Central Bank", "spread_10y_1y_bps": 57 }, "meta": { "timestamp": "2026-06-09T11:39:44.982Z", "request_id": "a6b4b219-b30d-45b9-aa4c-b99deb699b3a" }, "status": "ok", "message": "Yield curve retrieved successfully", "success": true } ``` ### Meta #### `GET /v1/meta` — Spec **Example:** ```bash curl -H "x-oanor-key: $KEY" \ "https://api.oanor.com/ecb-api/v1/meta" ``` **Response:** ```json { "data": { "source": "ECB Data Portal SDMX API (live)", "service": "ecb-api", "endpoints": { "GET /v1/estr": "€STR euro short-term rate, current + recent history.", "GET /v1/meta": "This document.", "GET /v1/key_rates": "ECB policy rates: deposit facility, MRO, marginal lending (history=N for past values).", "GET /v1/yield_curve": "Euro-area AAA government bond spot yield curve (3M–30Y) + 10y-1y spread." }, "description": "Live official euro-area monetary data from the ECB Data Portal: the ECB's three policy interest rates (deposit facility, main refinancing operations, marginal lending facility) with effective dates and history; €STR, the euro short-term overnight benchmark, with its recent path; and the euro-area AAA government bond spot-rate yield curve from 3 months to 30 years with the 10y-1y slope. Live, no key, nothing stored. Distinct from exchange-rate APIs and from the Bank of Canada and US-Treasury APIs — this is the ECB's policy rates, €STR and euro yield curve.", "upstream_status": "ok" }, "meta": { "timestamp": "2026-06-09T11:39:45.104Z", "request_id": "b4ca9010-37dd-4368-b9c8-28e37de2980f" }, "status": "ok", "message": "Meta", "success": true } ``` --- Marketplace page: https://www.oanor.com/api/ecb-api OpenAPI spec: https://www.oanor.com/api/ecb-api/openapi.json