The OpenAIRE HTTP API allows developers to access metadata records of the OpenAIRE Research Graph by performing queries over publications, datasets, and projects.
The API is intended for metadata discovery and exploration only, that is it does not give direct access to publication files and it does not provide access to
the whole information space: the number of total results returned by one query is limited to 10,000. For accessing the whole graph, developers are
encouraged to use the OpenAIRE Research Graph dumps.
TERMS OF USE AND SLA
OpenAIRE HTTP API: the APIs are free-to-use (no sign-up needed) by any third-party service. Note that:
- The OpenAIRE APIs can be accessed over HTTPS both by authenticated and unauthenticated requests. To achieve better rate limits you need to make authenticated requests. For more information check the documentation here
- For accessing the whole content of the OpenAIRE Research Graph check the OpenAIRE Research Graph Dumps.
- Since 2015 an RDF dump of the LOD is made available in Zenodo.org
Metadata license is CC-BY: the metadata records retuned by the service can be freely re-used by commercial and non-commercial partners under CC-BY license, hence as long as OpenAIRE is acknowledged as content provider.
Quality of Service: all API services are running in production 24/7 within the OpenAIRE infrastructure premises deployed at the data center facilities of the Interdisciplinary Centre for Mathematical and Computational Modelling (ICM).
APIs rate limits For more details on the rate limits please check here.
Common Parameters
Parameters included in this section can always be specified, regardless the type of entities (metadata about publications,
research data, software, other research products, or projects) you want to retrieve.
To query for publications metadata: http://api.openaire.eu/search/publications
To query for research data metadata: http://api.openaire.eu/search/datasets
To query for software metadata: http://api.openaire.eu/search/software
To query for other research products metadata: http://api.openaire.eu/search/other
To query for projects metadata: http://api.openaire.eu/search/projects
| Parameter | Option | Description |
|---|---|---|
| page | integer | Page number of the search results. |
| size | integer | Number of results per page. |
| format | json | xml | csv | tsv | The format of the response. The default is xml. |
| model | openaire | sygma | The data model of the response. Default is openaire. Model sygma is a simplified version of the openaire model. For sygma, only the xml format is available. The relative XML schema is available here. |
| sortBy | sortBy=field,[ascending|descending] |
The sorting order of the specified field. For the list of sortable fields, please refer to the documentation relative to the specific type of entity you are querying for. |
| hasECFunding | true | false | If hasECFunding is true gets the entities funded by the EC. If hasECFunding is false gets the entities related to projects not funded by the EC. |
| hasWTFunding | true | false | If hasWTFunding is true gets the entities funded by Wellcome Trust. The results are the same as those obtained with funder=wt. If hasWTFunding is false gets the entities related to projects not funded by Wellcome Trust. |
| funder | WT | EC | ARC | ANDS | NSF | FCT | NHMRC | Search for entities by funder. |
| fundingStream | ... | Search for entities by funding stream. |
| FP7scientificArea | ... | Search for FP7 entities by scientific area. |
| keywords | White-space separated list of keywords. | N/A |
Publication specific parameters
Endpoint: http://api.openaire.eu/search/publications
| Parameter | Option | Description |
|---|---|---|
| sortBy | sortBy=field,[ascending|descending]; 'field' is one of: dateofcollection, resultstoragedate, resultstoragedate, resultembargoenddate, resultembargoendyear, resultdateofacceptance, resultacceptanceyear |
The sorting order of the specified field. |
| doi | Comma separated list of DOIs. Alternatively, it is possible to repeat the parameter for each requested doi. |
Gets the publications with the given DOIs, if any. |
| openairePublicationID | Comma separated list of OpenAIRE identifiers. Alternatively, it is possible to repeat the parameter for each requested identifier. |
Gets the publication with the given openaire identifier, if any. |
| fromDateAccepted | Date formatted as YYYY-MM-DD |
Gets the publications whose date of acceptance is greater than or equal the given date. |
| toDateAccepted | Date formatted as YYYY-MM-DD |
Gets the publications whose date of acceptance is less than or equal the given date. |
| title | White-space separated list of keywords. | Gets the publications whose titles contain the given list of keywords. |
| author | White-space separated list of names and/or surnames. | Search for publications by authors. |
| openaireProviderID | Comma separated list of identifiers. | Search for publications by openaire data provider identifier. Alternatively, it is possible to repeat the parameter for each provider id. In both cases, provider identifiers will form a query with OR semantics. |
| openaireProjectID | Comma separated list of identifiers. Alternatively, it is possible to repeat the parameter for each provider id. In both cases, provider identifiers will form a query with OR semantics. |
Search for publications by openaire project identifier. Alternatively, it is possible to repeat the parameter for each provider id. In both cases, provider identifiers will form a query with OR semantics. |
| hasProject | true | false | If hasProject is true gets the publications that have a link to a project. If hasProject is false gets the publications with no links to projects. |
| projectID | ... | The given grant identifier of the project. |
| FP7ProjectID | ... | Search for publications associated to a FP7 project with the given grant number. It is equivalent to a query by funder=FP7&projectID=grantID |
| OA | true | false | If OA is true gets Open Access publications. If OA is false gets the non Open Access publications |
| country | 2 letter country code | Search for publications associated to the country code |
Research Data specific parameters
Endpoint: http://api.openaire.eu/search/datasets
| Parameter | Option | Description |
|---|---|---|
| sortBy | sortBy=field,[ascending|descending]; 'field' is one of: dateofcollection, resultstoragedate, resultstoragedate, resultembargoenddate, resultembargoendyear, resultdateofacceptance, resultacceptanceyear |
The sorting order of the specified field. |
| doi | Comma separated list of DOIs. Alternatively, it is possible to repeat the parameter for each requested doi. |
Gets the datasets with the given DOIs, if any. |
| openaireDatasetID | Comma separated list of OpenAIRE identifiers. Alternatively, it is possible to repeat the parameter for each requested identifier. |
Gets the dataset with the given openaire identifier, if any. |
| fromDateAccepted | Date formatted as YYYY-MM-DD |
Gets the datasets whose date of acceptance is greater than or equal the given date. |
| toDateAccepted | Date formatted as YYYY-MM-DD |
Gets the datasets whose date of acceptance is less than or equal the given date. |
| title | White-space separated list of keywords. | Gets the datasets whose titles contain the given list of keywords. |
| author | A white-space separated list of names and/or surnames | Search for datasets by authors. |
| openaireProviderID | Comma separated list of identifiers. | Search for datasets by openaire data provider identifier. Alternatively, it is possible to repeat the parameter for each provider id. In both cases, provider identifiers will form a query with OR semantics. |
| openaireProjectID | Comma separated list of identifiers. | Search for datasets by openaire project identifier. Alternatively, it is possible to repeat the parameter for each provider id. In both cases, provider identifiers will form a query with OR semantics. |
| projectID | ... | The given grant identifier of the project. |
| hasProject | true | false | If hasProject is true gets the datasets that have a link to a project. If hasProject is false gets the datasets with no links to projects. |
| FP7ProjectID | ... | Search for datasets associated to a FP7 project with the given grant number. It is equivalent to a query by funder=FP7&projectID=grantID |
| OA | true | false | If OA is true gets Open Access datasets. If OA is false gets the non Open Access datasets |
| country | 2 letter country code | Search for datasets associated to the country code |
Software specific parameters
Endpoint: http://api.openaire.eu/search/software
| Parameter | Option | Description |
|---|---|---|
| sortBy | sortBy=field,[ascending|descending]; 'field' is one of: dateofcollection, resultstoragedate, resultstoragedate, resultembargoenddate, resultembargoendyear, resultdateofacceptance, resultacceptanceyear |
The sorting order of the specified field. |
| doi | Comma separated list of DOIs. Alternatively, it is possible to repeat the parameter for each requested doi. |
Gets the software with the given DOIs, if any. |
| openaireSoftwareID | Comma separated list of OpenAIRE identifiers. Alternatively, it is possible to repeat the parameter for each requested identifier. |
Gets the software with the given openaire identifier, if any. |
| fromDateAccepted | Date formatted as YYYY-MM-DD |
Gets the software whose date of acceptance is greater than or equal the given date. |
| toDateAccepted | Date formatted as YYYY-MM-DD |
Gets the software whose date of acceptance is less than or equal the given date. |
| title | White-space separated list of keywords. | Gets the software whose titles contain the given list of keywords. |
| author | A white-space separated list of names and/or surnames | Search for software by authors. |
| openaireProviderID | Comma separated list of identifiers. | Search for software by openaire data provider identifier. Alternatively, it is possible to repeat the parameter for each provider id. In both cases, provider identifiers will form a query with OR semantics. |
| openaireProjectID | Comma separated list of identifiers. | Search for software by openaire project identifier. Alternatively, it is possible to repeat the parameter for each provider id. In both cases, provider identifiers will form a query with OR semantics. |
| projectID | ... | The given grant identifier of the project. |
| hasProject | true | false | If hasProject is true gets the software that have a link to a project. If hasProject is false gets the software with no links to projects. |
| FP7ProjectID | ... | Search for software associated to a FP7 project with the given grant number. It is equivalent to a query by funder=FP7&projectID=grantID |
| OA | true | false | If OA is true gets Open Access software. If OA is false gets the non Open Access software |
| country | 2 letter country code | Search for software associated to the country code |
Other Research Products specific parameters
Endpoint: http://api.openaire.eu/search/other
| Parameter | Option | Description |
|---|---|---|
| sortBy | sortBy=field,[ascending|descending]; 'field' is one of: dateofcollection, resultstoragedate, resultstoragedate, resultembargoenddate, resultembargoendyear, resultdateofacceptance, resultacceptanceyear |
The sorting order of the specified field. |
| doi | Comma separated list of DOIs. Alternatively, it is possible to repeat the parameter for each requested doi. |
Gets the other research products with the given DOIs, if any. |
| openaireOtherID | Comma separated list of OpenAIRE identifiers. Alternatively, it is possible to repeat the parameter for each requested identifier. |
Gets the other research products with the given openaire identifier, if any. |
| fromDateAccepted | Date formatted as YYYY-MM-DD |
Gets the other research products whose date of acceptance is greater than or equal the given date. |
| toDateAccepted | Date formatted as YYYY-MM-DD |
Gets the other research products whose date of acceptance is less than or equal the given date. |
| title | White-space separated list of keywords. | Gets the other research products whose titles contain the given list of keywords. |
| author | A white-space separated list of names and/or surnames | Search for other research products by authors. |
| openaireProviderID | Comma separated list of identifiers. | Search for other research products by openaire data provider identifier. Alternatively, it is possible to repeat the parameter for each provider id. In both cases, provider identifiers will form a query with OR semantics. |
| openaireProjectID | Comma separated list of identifiers. | Search for other research products by openaire project identifier. Alternatively, it is possible to repeat the parameter for each provider id. In both cases, provider identifiers will form a query with OR semantics. |
| projectID | ... | The given grant identifier of the project. |
| hasProject | true | false | If hasProject is true gets the other research products that have a link to a project. If hasProject is false gets the other research products with no links to projects. |
| FP7ProjectID | ... | Search for other research products associated to a FP7 project with the given grant number. It is equivalent to a query by funder=FP7&projectID=grantID |
| OA | true | false | If OA is true gets Open Access other research products. If OA is false gets the non Open Access other research products |
| country | 2 letter country code | Search for other research products associated to the country code |
Project specific parameters
Endpoint: http://api.openaire.eu/search/projects
| Parameter | Option | Description |
|---|---|---|
| sortBy | sortBy=field,[ascending|descending]; 'field' is one of: projectstartdate, projectstartyear, projectenddate, projectendyear, projectduration |
The sorting order of the specified field. |
| grantID | Comma separated list of grant identifiers. | Gets the project with the given grant identifier, if any. |
| openairePublicationID | Comma separated list of OpenAIRE identifiers. | Gets the publication with the given openaire identifier, if any. |
| name | White-space separated list of keywords. | Gets the projects whose names contain the given list of keywords. |
| acronym | N/A | Gets the project with the given acronym, if any. |
| callID | N/A | Search for projects by call identifier. |
| startYear | Year formatted as YYYY |
Gets the projects that started in the given year. |
| endYear | Year formatted as YYYY. |
Gets the projects that ended in the given year. |
| participantCountries | Comma separeted list of 2 letter country codes. | Search for projects by participant countries. |
| participantAcronyms | White space separeted list of acronyms of institutions. | Search for projects by participant institutions. |
