Single metric time series for one country
Changed onReturns a lean (year, value) series for a single metric column in the OWID CO2 bundle. The metric name must match one of the 76 column keys from the codebook exactly (e.g. co2, co2_per_capita, consumption_co2, methane, nitrous_oxide, temperature_change_from_co2, share_global_co2, cumulative_co2). Call /api/v1/environment/co2/codebook for the full column list with units and descriptions. Published under CC BY 4.0 with dual attribution - the response names the primary upstream provider for this specific column (Global Carbon Project, Jones et al., EIA, etc).
Request
- Base URL: https://sugra.ai
- URL: https://sugra.ai/api/v1/environment/co2/country/{iso3}/{metric}
- Auth: API key in header x-api-key
Path parameters
ISO 3166-1 alpha-3 country code. Case-insensitive; normalised to uppercase.
Metric column name from the codebook (e.g. co2, co2_per_capita, methane, temperature_change_from_co2).
Query parameters
Inclusive start year (integer). Bundle range is 1750-present.
Inclusive end year. Defaults to the latest year in the bundle.
Response
Year-value pairs for one metric plus unit, description, and per-column attribution.
Example response
{
"data": {
"iso_code": "USA",
"country": "United States",
"metric": "co2",
"unit": "million tonnes",
"observations": [
{
"year": 2022,
"value": 5055.403
}
],
"count": 30
},
"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"
],
"stale_since": "2026-09-08T12:00:00Z",
"period": "2026-Q1",
"notes": "the UKMTO report behind these counts is dated 2026-08-21 and is 11 days old"
}
}Changes
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added the non-success response with the status
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added the optional property
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