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<?xml version="1.0" encoding="UTF-8"?>
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<chapter version="5.0" xmlns="http://docbook.org/ns/docbook"
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xmlns:xi="http://www.w3.org/2001/XInclude" xmlns:xlink="http://www.w3.org/1999/xlink"
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xml:id="cha_http-api" xreflabel="HTTP Search API">
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<title>Selective access with HTTP API</title>
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<para>The OpenAIRE+ HTTP API allows developers to access the metadata information space of OpenAIRE+ by
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performing queries over publications, datasets, and projects.</para>
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<para>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
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to the whole information space: the number of total results returned by one query is limited
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to 10,000.</para>
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<para>For accessing the whole information space, developers are encouraged to use the <xref
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linkend="cha_oai_pmh"/></para>
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<xi:include href="sections/common_param.xml"/>
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<xi:include href="sections/publications.xml"/>
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<xi:include href="sections/datasets.xml"/>
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<xi:include href="sections/projects.xml"/>
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</chapter>
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