pub_covidcast_meta: Metadata for the COVIDcast endpoint

In epidatr: Client for Delphi's 'Epidata' API

Metadata for the COVIDcast endpoint

Description

This is a V4 endpoint. Starting in October 2026, it is tentatively deprecated in favor of the V5 API. The new API can be accessed via the epidata_snapshot(), epidata_archive(), and epidata_meta() functions. For more details on the changes, refer to vignette("migration-guide"), and visit the V5 signals documentation to see which sources are currently available.

API docs: https://cmu-delphi.github.io/delphi-epidata/api/covidcast_meta.html.

Fetch a summary of metadata for all sources and signals that are available in the API, along with basic summary statistics such as the dates they are available, the geographic levels at which they are reported, and etc.

The result can be filtered server-side by passing signals, time_type, and/or geo_type. Omitted filters (the default) return metadata for everything.

Usage

pub_covidcast_meta(
  signals = NULL,
  time_type = NULL,
  geo_type = NULL,
  fetch_args = fetch_args_list()
)

Arguments

signals	character. Optionally, the signals to return metadata for, each formatted as "source:signal" (e.g. "fb-survey:smoothed_cli"). Defaults to all signals.
time_type	string. The temporal resolution of the data (either "day" or "week", depending on signal).
geo_type	string. Optionally, a single geographic resolution to return metadata for (see: https://cmu-delphi.github.io/delphi-epidata/api/covidcast_geography.html). Defaults to all geographic resolutions.
fetch_args	fetch_args_list(). Additional arguments to pass to fetch(). See fetch_args_list() for details.

Value

tibble::tibble

See also

For example queries showing how to discover signals and build calls, see vignette("signal-discovery", package = "epidatr").

See Also

pub_covidcast(),covidcast_epidata()

Examples

pub_covidcast_meta()
# All signals from the Facebook survey data source
pub_covidcast_meta(
  signals = "fb-survey:*"
)
# All signals with time_type "day".
pub_covidcast_meta(
  time_type = "day",
)
# All signals with geo_type "state".
pub_covidcast_meta(
  geo_type = "state",
)

epidatr documentation built on Sept. 21, 2026, 5:08 p.m.