/fred/series/observations

POST /api/fred/series/observations

Price: 1 credit

Get the time-series observations for an economic data series by its identifier

How to use it

Fetch the observations (date and value pairs) for an economic data series by its identifier. Optionally narrow the result to a date range, resample to a different frequency (with a chosen aggregation method), or apply a value transformation such as percent change. Missing observations are returned with a null value.

Parameters

• access-token string required

Request body

• timeout integer — Max scrapping execution timeout (in seconds) (default: 300; min: 20; max: 1500)
• series_id string required — Series identifier (examples: "GNPCA", "UNRATE", "GDP")
• count integer required — Number of observations to return (min: 1)
• observation_start_date string nullable — Earliest observation date to include, inclusive (examples: "2010-01-01")
• observation_end_date string nullable — Latest observation date to include, inclusive (examples: "2023-12-31")
• frequency string nullable — Resample the series to this frequency (one of: "Daily", "Weekly, Ending Friday", "Weekly, Ending Thursday", "Weekly, Ending Wednesday", "Weekly, Ending Tuesday", "Weekly, Ending Monday", "Weekly, Ending Sunday", "Weekly, Ending Saturday", "Biweekly, Ending Wednesday", "Biweekly, Ending Monday", "Monthly", "Quarterly", "Semiannual", "Annual")
• aggregation_method string — How values are aggregated when resampling to a lower frequency (default: "avg"; one of: "avg", "sum", "eop")
• units string — Value transformation applied to the observations (default: "lin"; one of: "lin", "chg", "ch1", "pch", "pc1", "pca", "cch", "cca", "log")

Response

• @type string (default: "FredObservation")
• date string required
• value number nullable

Errors

• 422 — The request body did not validate Check the fields against this schema. A URN with the wrong prefix is the most common cause.
• 408 — The request ran past its time limit Raise `timeout` in the request body, up to the maximum this endpoint documents. Lowering `count` or turning off the `with_*` flags also helps, because less work finishes sooner.
• 412 — Series not found Retrying will not help: either the entity does not exist, or the input points at a different one.
• 429 — Too many requests: a rate limit or a usage window is exhausted When the response carries an X-Retry-After header, wait that many seconds and retry: the same number is in the body as `detail.retry_after`, and the limit clears once that window passes. The message in the body names the limit that was hit.
• 500 — Something broke on our side Retrying will not help. If it keeps happening, send us the X-Request-ID from the response headers.
• 529 — Rate limit reached, or the endpoint is overloaded Wait at least 30 seconds, then retry.

Response headers

• X-Error — Error message text (present only on error)
• X-Request-ID — Unique request identifier
• X-Execution-Time — Execution time in seconds
• X-Result-Count — How many records the body carries. 0 means an empty result, which is a normal answer and not by itself an error. A non-zero count can come back together with X-Error when the failure happened partway through — read this header and X-Error independently.
• X-Total-Available-Results — How many records exist for this query, when the endpoint can say. On a `dry_run` request this is the answer and the body is empty. It saturates: the endpoint's documented maximum means 'at least that many', any smaller number is exact.
• X-Warning — Present when the request body carried keys this endpoint does not document. They were ignored, so any filter you meant to apply through them did not apply. Check the spelling against this schema and retry.
• X-Retry-After — Seconds to wait before retrying. Present only on 429.