lic key.</li> <li><strong>PAT Issuance</strong>: If the signature is valid, the web service issues a PAT to the AI agent.</li> </ol> <h4 id=213-pat-usage>2.1.3 PAT Usage<a class=headerlink href=#213-pat-usage title="Permanent link">&para;</a></h4> <p>The AI agent includes the PAT in the <code>Authorization</code> header of each request to the web service, using the Bearer scheme:</p> <div class="language-text highlight"><pre><span></span><code><span id=__span-0-1><a id=__codelineno-0-1 name=__codelineno-0-1