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SYNTHORA ECB Euro-Area 10Y Government Bond Spot Yield
x402
SYNTHORA ECB Euro-Area 10Y Government Bond Spot Yield is a paid API for AI agents from ecb-euro-govt-yield-10y.hergertsynthora.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Retrieves the ECB euro-area AAA-rated government bond 10-year spot yield from the ECB SDMX YC dataflow, returning dated yield observations in JSON format.
Price / call$0.001
Success—
StatusUnknown
How this service works
Euro-area AAA-rated government bond 10-year spot yield from the ECB yield-curve dataflow via the SDMX Data Portal (keyless JSON, dataflow YC). Serves autonomous fixed-income agents and agent-to-agent bots benchmarking EUR long-end rates against US Treasury yields. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.
Output
Returns a JSON object with a boolean 'ok' flag, a niche identifier ('ecb-euro-govt-yield-10y'), a 'result' map of ISO date strings to spot yield values (expressed as percentage rates, e.g. 3.056), and a 'provenance' object containing the source ECB SDMX API URL and source label. The number of date/yield pairs matches the lastNObservations parameter requested.
Example use cases
EUR vs US Treasury yield spread monitoring
“Can you fetch the latest 5 ECB euro-area 10-year government bond spot yield readings so I can calculate the current spread against US 10Y Treasuries?”
Fixed-income agent daily rate briefing
“Pull today's ECB 10Y euro-area AAA sovereign bond spot yield and give me the last 10 daily observations so I can track the recent trend in EUR long-end rates.”
Automated bond portfolio benchmarking
“I need the ECB euro-area 10-year spot yield for the last 20 observations in JSON format to benchmark my EUR fixed-income portfolio's duration risk against the risk-free long rate.”
Technical details
Endpoint
POSThttps://ecb-euro-govt-yield-10y.hergertsynthora.com/serviceWhen to prefer
Choose this endpoint when you need the official ECB-sourced euro-area AAA government bond 10-year spot yield from the YC SDMX dataflow, particularly for fixed-income agents benchmarking EUR long-end rates, computing EUR/USD rate spreads, or building automated sovereign yield monitoring pipelines. Prefer it over general financial data APIs when ECB provenance and the specific YC series (B.U2.EUR.4F.G_N_A.SV_C_YM.SR_10Y) is required for compliance or transparency reasons. It is especially well-suited for agent-to-agent workflows where a verifiable, authoritative EUR risk-free rate source is needed.
Side effects
- ECB SDMX upstream unavailable: returns error or non-200 response from ECB data portal
- Invalid series_key: ECB returns no data or a 404/error for unrecognized series identifiers
- lastNObservations set to 0 or non-numeric string: may return empty result set or upstream error
- Unsupported format value: ECB may reject non-jsondata format strings
- Payment failure (x402): call rejected before reaching ECB if USDC micropayment is not authorized
- Stale data: ECB may not publish yield data on weekends or holidays, resulting in older observations
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| format | string | format |
| series_key | string | series_key |
| lastNObservations | string | lastNObservations |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"niche": "ecb-euro-govt-yield-10y",
"result": {
"2026-07-07": 3.0568869592,
"2026-07-08": 3.1370395898,
"2026-07-09": 3.1292327833
},
"provenance": {
"url": "https://data-api.ecb.europa.eu/service/data/YC/B.U2.EUR.4F.G_N_A.SV_C_YM.SR_10Y?lastNObservations=3&format=jsondata",
"source": "ECB Euro-Area 10Y Government Bond Spot Yield"
}
}
}Tags
x402
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