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 <h1 class="topictitle1">API Calling</h1>
 <div id="body8662426"><p id="modelarts_03_0140__en-us_topic_0171316289_p10461651169">ModelArts provides Representational State Transfer (REST) APIs, allowing you to call APIs through HTTPS. For details about API calling, see <a href="modelarts_03_0005.html">Calling APIs</a>.</p>
-<p id="modelarts_03_0140__en-us_topic_0171316289_p323714539217">In addition, ModelArts provides software development kits (SDKs) of multiple programming languages for you to use. For details about how to use the SDKs, see <em id="modelarts_03_0140__i859314424322">ModelArts SDK Reference</em>.</p>
+<p id="modelarts_03_0140__en-us_topic_0171316289_p323714539217">In addition, ModelArts provides software development kits (SDKs) of multiple programming languages for you to use. For details about how to use the SDKs, see <em id="modelarts_03_0140__i859314424322"><a href="https://docs.otc.t-systems.com/modelarts/sdk-ref/sdk_overview.html" target="_blank" rel="noopener noreferrer">ModelArts SDK Reference</a></em>.</p>
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