Core

Sources and citations

Responses include a source block, complete for the six Apizie Finance sources, so your agent can cite the data and your users can check it.

{
  "project": "finance:fred",
  "data": { "series": "FEDFUNDS", "observations": [ … ] },
  "source": {
    "official": true,
    "provider": "FRED",
    "publisher": "Federal Reserve Bank of St. Louis",
    "url": "https://fred.stlouisfed.org/series/FEDFUNDS",
    "apiUrl": "https://api.stlouisfed.org/fred/series/observations?series_id=FEDFUNDS&…",
    "retrievedAt": "2026-10-30T09:12:44.000Z",
    "license": "Free to use under the FRED API Terms of Use; …",
    "licenseUrl": "https://fred.stlouisfed.org/docs/api/terms_of_use.html",
    "attribution": "Source: Federal Reserve Bank of St. Louis (FRED), retrieved 2026-10-30, https://fred.stlouisfed.org/series/FEDFUNDS",
    "notice": "This product uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis."
  },
  "timestamp": "2026-10-30T09:12:44.120Z"
}
FieldMeaning
officialtrue when the data came from one of the six official sources
provider, publisherThe source and the organisation that publishes it
urlA page a person can open to check the value
apiUrlThe official API URL that was called, with credentials removed (also in the X-Source header)
retrievedAtWhen the data was fetched from the source. Cached answers keep the original time.
license, licenseUrlThe publisher's terms
attributionA ready-to-use citation line
noticeText a publisher asks you to show (FRED)
alsoOther URLs used to build the answer (for example a ticker lookup)

Per-value sources

Combined endpoints cite each section, and values taken from a filing link to that filing. In official:company/profile, financials.items.revenue.source is the SEC filing index for the 10-K the number came from.

Prompting an agent

Over MCP the server tells agents to cite source. In your own prompts, ask for it: “Answer with the figure and cite source.attribution.”

Licence rules we apply