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<a style="cursor: default;">APIs</a>
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<span>Authentication</span>
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<a href="#">Authentication</a>
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<li><b><a href="./authentication.html">General Information</a></b></li>
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<li><a href="./personalToken.html">Personal Token</a></li>
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<li><a href="./registeredService.html">Registered Services</a></li>
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<h2 class="uk-text-center">Authentication</h2>
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<p>
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The OpenAIRE APIs can be accessed over HTTPS both by authenticated and non authenticated requests.
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Currently, there is <b>an adjustment period until October 2022</b>, when the rate limit for both authenticated
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and non authenticated requests is up to 7200 requests per hour. <b>After this period we plan to significantly
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lower the rate limit of non authenticated requests up to 60 requests per hour.</b>
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<p>Please consider to make authenticated requests to achieve better rate limits. Check our Privacy Policy <a href="http://www.openaire.eu/privacy-policy" target="_blank">here</a>.</p>
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<thead>
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<tr>
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<th colspan="2" class="uk-text-center">OpenAIRE APIs Rate limits</th>
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</tr>
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</thead>
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<tbody>
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<td>Not authenticated requests</td>
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<td>up to 7200 requests per hour
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<br>soon to decrease - please see above</td>
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<td>Authenticated requests</td>
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<td>up to 7200 request per hour</td>
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</tr>
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</tbody>
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</table>
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<p>The only exception to this approach is the LOD API that will continue to be accessible only via HTTP and
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non authenticated requests at <a href="http://lod.openaire.eu/sparql" target="_blank"> http://lod.openaire.eu/sparql</a>
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with the current rate limits.</p>
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OpenAIRE APIs can be used for both authentication and authorization. Our OAuth 2.0 implementation, conforms to the
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OpenID Connect specification, and is <a href="https://openid.net/certification/" target="_blank">OpenID Certified</a>.
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OpenID Connect is a simple identity layer on top of the OAuth 2.0 protocol. For more information about OAuth2.0 please
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visit the <a href="https://oauth.net/2/" target="_blank">OAuth2.0 official site</a>. For more information about OpenID
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Connect please visit the <a href="https://openid.net/connect/" target="_blank">OpenID Connect official site</a>.
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</p>
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<h4 class="portal-color">Requests</h4>
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<p>To access the OpenAIRE APIs with better rate limits, send your access token using the Authorization header.</p>
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<pre class="uk-text-left">
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GET https://api.openaire.eu/{resourceServicePath}
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Authorization: Bearer {ACCESS_TOKEN}</pre>
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<p>To get an access token, we support <a href="./personalToken.html"><b>personal access token</b></a> creation and
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<a href="./registeredService.html"><b>service registration</b></a>.</p>
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<h4 class="portal-color">Response Headers</h4>
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<tbody>
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<td>x-ratelimit-limit</td>
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<td>The maximum number of requests allowed for the client in one time window.</td>
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</tr>
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<td>x-ratelimit-used</td>
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<td>The number of requests already made by the client in the current time window.</td>
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</tbody>
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</table>
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<p>The OpenAIRE APIs use a sliding time window of one hour.</p>
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<h4 class="portal-color">Error Messages</h4>
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<p>404 - Not found</p> <!--404-->
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<pre class="uk-text-left">
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{
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"error": "Not found",
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"description": "Invald request path."
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}</pre>
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<p>403 - Invalid Access Token</p> <!--403-->
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"error": "Token invalid",
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"description": "Authorization header value invalid."
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}</pre>
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<p>429 - Rate limit abuse for unauthenticated user</p> <!--429-->
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<pre class="uk-text-left">
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{
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"error": "Too many requests",
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"description": "Request rate exceeded. Slow down."
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}</pre>
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<p>429 - Rate limit abuse</p> <!--429-->
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{
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"error": "Too many requests",
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"description": "Request rate exceeded. Slow down."
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}</pre>
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