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Concordance Time-Series Lookup
x402
Concordance Time-Series Lookup is a paid API for AI agents from concordancehq.duckdns.org, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Retrieves structured time-series data points for economic indicators, financial metrics, or other quantitative series from Concordance's multi-source data platform
Price / call$0.01
Success—
StatusUnknown
How this service works
Tabular time-series lookup across economic indicators (FRED, World Bank, UN Comtrade), crypto TVL, weather, and stock quotes -- by source + series_id, with an optional date range.
Output
A JSON array of time-series data points, each containing a numeric value and an observed_at timestamp, along with the source identifier (e.g. 'fred') and series_id (e.g. 'GDP'). Data is refreshed on a schedule and sourced from one of Concordance's 18 integrated data sources.
Example use cases
Track GDP growth over decades
“Can you fetch the GDP time series from Concordance's FRED source so I can see how US economic output has changed year by year?”
Monitor unemployment rate trends
“Pull me the unemployment rate time series from Concordance — I need the historical data points with dates to see how it's trended over the past few years.”
Compare trade data series
“Get me the trade balance time series data from Concordance so I can see the import/export figures over time with their observed dates.”
Technical details
Endpoint
POSThttps://concordancehq.duckdns.org/tools/seriesWhen to prefer
Choose this endpoint when you need structured, quantitative time-series data (e.g. economic indicators, market metrics) with clear source attribution from a specific named series. Prefer this over the /search or /digest endpoints when you want raw numeric data points over time rather than document results or narrative summaries. Best when you know the series identifier and source you want.
Side effects
- Unknown series_id returns empty result or 404
- Invalid or unsupported source name returns an error
- Data freshness lag if the scheduled refresh has not yet run
- Rate limiting or payment failure via x402 protocol at $0.01 USDC per call
- DuckDNS hostname may have availability issues compared to stable domains
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| end | string | |
| start | string | |
| source | string | |
| series_id | string |
Output
Schema · Response
{
"type": "json",
"example": {
"points": [
{
"value": 100,
"observed_at": "2026-01-01"
}
],
"source": "fred",
"series_id": "GDP"
}
}Tags
x402
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