General API Info
Supported Methods
Export Entire Project as REDCap XML File (containing metadata & data)
The entire project (all records, events, arms, instruments, fields, and project attributes) can be downloaded as a single XML file, which is in CDISC ODM format (ODM version 1.3.1). This XML file can be used to create a clone of the project (including its data, optionally) on this REDCap server or on another REDCap server (it can be uploaded on the Create New Project page). Because it is in CDISC ODM format, it can also be used to import the project into another ODM-compatible system. NOTE: All the option paramters listed below ONLY apply to data returned if the 'returnMetadataOnly' parameter is set to FALSE (default). For this API method, ALL metadata (all fields, forms, events, and arms) will always be exported. Only the data returned can be filtered using the optional parameters.
Note about export rights: If the 'returnMetadataOnly' parameter is set to FALSE, then please be aware that Data Export user rights will be applied to any data returned from this API request. For example, if you have 'De-Identified' or 'Remove All Identifier Fields' data export rights, then some data fields *might* be removed and filtered out of the data set returned from the API. To make sure that no data is unnecessarily filtered out of your API request, you should have 'Full Data Set' export rights in the project.
The API token specific to your REDCap project and username (each token is unique to each user for each project). See the section on the left-hand menu for obtaining a token for a given project.
project_xml
true, false [default] - TRUE returns only metadata (all fields, forms, events, and arms), whereas FALSE returns all metadata and also data (and optionally filters the data according to any of the optional parameters provided in the request)
an array of record names specifying specific records you wish to pull (by default, all records are pulled)
an array of field names specifying specific fields you wish to pull (by default, all fields are pulled)
an array of unique event names that you wish to pull records for - only for longitudinal projects
csv, json, xml - specifies the format of error messages. If you do not pass in this flag, it will select the default format for you passed based on the 'format' flag you passed in or if no format flag was passed in, it will default to 'xml'.
true, false [default] - specifies whether or not to export the survey identifier field (e.g., 'redcap_survey_identifier') or survey timestamp fields (e.g., instrument+'_timestamp') when surveys are utilized in the project. If you do not pass in this flag, it will default to 'false'. If set to 'true', it will return the redcap_survey_identifier field and also the survey timestamp field for a particular survey when at least one field from that survey is being exported. NOTE: If the survey identifier field or survey timestamp fields are imported via API data import, they will simply be ignored since they are not real fields in the project but rather are pseudo-fields.
true, false [default] - specifies whether or not to export the 'redcap_data_access_group' field when data access groups are utilized in the project. If you do not pass in this flag, it will default to 'false'. NOTE: This flag is only viable if the user whose token is being used to make the API request is *not* in a data access group. If the user is in a group, then this flag will revert to its default value.
String of logic text (e.g., [age] > 30) for filtering the data to be returned by this API method, in which the API will only return the records (or record-events, if a longitudinal project) where the logic evaluates as TRUE. This parameter is blank/null by default unless a value is supplied. Please note that if the filter logic contains any incorrect syntax, the API will respond with an error message.
true, false [default] - TRUE will cause the XML returned to include all files uploaded for File Upload and Signature fields for all records in the project, whereas FALSE will cause all such fields not to be included. NOTE: Setting this option to TRUE can make the export very large and may prevent it from completing if the project contains many files or very large files.
The entire REDCap project's metadata (and data, if specified) will be returned in CDISC ODM format as a single XML string.