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<p>Openaire XML Schema has been changed! Please <a href="https://www.openaire.eu/openaire-xml-schema-change-announcement" target="_blank">click here</a> to learn more!</p>
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<h2>Bulk access via OAI-PMH</h2>
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<p>Currently the OAI-PMH publisher is <strong>not</strong> supporting incremental harvesting. <br>
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Although the usage of the OAI parameters 'from' and 'until' is handled by the OAI publisher, the datestamps of metadata records are updated about every week.<br>
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We apologise for any inconvenience this may cause to harvesters,<br>
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The OpenAIRE technical team</p>
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<p> OAI-PMH is a standard protocol for metadata publishing and harvesting. For details on the OAI-PMH protocol please refer to the official documentation at <a href="http://www.openarchives.org/OAI/openarchivesprotocol.html" target="_blank">http://www.openarchives.org/OAI/openarchivesprotocol.html</a></p>
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<p> The OpenAIRE OAI-PMH endpoint is <a href="http://api.openaire.eu/oai_pmh" target="_blank">http://api.openaire.eu/oai_pmh</a> <br>
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For information about the endpoint check <a href="http://api.openaire.eu/oai_pmh?verb=Identify" target="_blank">http://api.openaire.eu/oai_pmh?verb=Identify</a> <br>
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The updated list of OAI sets is always available at <a href="http://api.openaire.eu/oai_pmh?verb=ListSets" target="_blank">http://api.openaire.eu/oai_pmh?verb=ListSets</a>
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For quick reference, we report some of the likely more interesting sets:
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<li> <strong>openaire:</strong> the set of publications. Metadata prefixes available: oaf, oai_dc</li>
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<li> <strong>FP7Publications:</strong> the set of publications funded by EC FP7. Metadata prefixes available: oaf, oai_dc
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<li> <strong>H2020Publications:</strong> the set of publications funded by EC H2020. Metadata prefixes available: oaf, oai_dc
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<li> <strong>openaire_data:</strong> the set of datasets. Metadata prefixes available: oaf, oai_datacite
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<li> <strong>OpenAccess:</strong> the set of all Open Access publications and datasets. Metadata prefixes available: oaf (return datasets and publications), oai_dc (return datasets and publications), oai_datacite (return datasets only)
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<li> <strong>projects:</strong> the set of all projects. Metadata prefix available: oaf
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<li> <strong>ECProjects:</strong> the set of projects funded by the European Commission (EC) under the programmes FP7 and H2020. Metadata prefix available: oaf
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<li> <strong>FP7Projects:</strong> the set of projects funded by the EC Seventh Framework Programme. Metadata prefix available: oaf
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<li> <strong>H2020Projects:</strong> the set of projects funded by the EC Horizn 2020 Programme. Metadata prefix available: oaf
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<li> <strong>WTProjects:</strong> the set of projects funded by Wellcome Trust. Metadata prefix available: oaf
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For the list of available metadata prefixes, check: <a href="http://api.openaire.eu/oai_pmh?verb=ListMetadataFormats" target="_blank">http://api.openaire.eu/oai_pmh?verb=ListMetadataFormats</a>. <br>
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Note that records will always be available in the OpenAIRE format (schema, documentation). The availability of records in oai_dc and oai_datacite depends on the typology of records.<br>
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Publications are avaialble in <code>oai_dc</code> according to the <strong>OpenAIRE3.0 guidelines</strong> for literature repositories. <br>
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Datasets are available in <code>oai_datacite</code> according to the <strong>OpenAIRE2.0 guidelines</strong> for data archives. <br>
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<h4>TERMS OF USE AND SLA</h4>
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<p>APIs are free-to-use (no sign-up needed) by any third-party service</p>
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<p><strong> Metadata license is CC-BY</strong>: 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.
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<p><strong>Quality of Service</strong>: all API services are running in production 24/7 within the OpenAIRE infrastructure premises deployed at the <a href="http://icm.edu.pl/en/centre-of-technology/">data center</a> facilities of the <a href=http://icm.edu.pl/en/">Interdisciplinary Centre for Mathematical and Computational Modelling</a> (ICM).
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<p><strong>APIs rate limits</strong>
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<li>no more than 30 concurrent connections from single IP to any APIs</li>
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<li>no more than 67 concurrent requests in total</li>
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