>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #3582575. --> Reported by: [marcus_johansson](https://www.drupal.org/user/385947) Related to !1404 >>> <p>[Tracker]<br> <strong>Update Summary: </strong>[One-line status update for stakeholders]<br> <strong>Short Description: </strong>Add agent skill and drush generator for Guardrail plugins<br> <strong>Check-in Date: </strong>MM/DD/YYYY<br> [/Tracker]</p> <h3 id="summary-problem-motivation">Problem/Motivation</h3> <p>Guardrail plugins (<code>@AiGuardrail</code>) allow developers to add safety and validation checks on AI inputs and outputs. The plugin system includes multiple result types (<code>PassResult</code>, <code>StopResult</code>, <code>RewriteInputResult</code>, <code>RewriteOutputResult</code>), streaming considerations (<code>NonStreamableGuardrailInterface</code>), and score aggregation. Creating a guardrail requires understanding all of these concepts.</p> <p>An agent skill and Drush generator would help developers quickly create custom guardrails for their specific safety requirements.</p> <h3 id="summary-proposed-resolution">Proposed resolution</h3> <ul> <li>Create <code>.agent/skills/create-guardrail/SKILL.md</code> describing how to create a Guardrail plugin, including the <code>@AiGuardrail</code> attribute, the <code>AiGuardrailPluginBase</code> base class, and the <code>processInput()</code>/<code>processOutput()</code> methods.</li> <li>Document the four result types and when to use each one.</li> <li>Document <code>NonStreamableGuardrailInterface</code> and <code>NonDeterministicGuardrailInterface</code>.</li> <li>Include a complete working example of a guardrail plugin.</li> <li>Add a Drush generate command (<code>drush generate ai-guardrail</code>) that scaffolds the plugin class.</li> </ul> <h3 id="summary-ai-usage">AI usage (if applicable)</h3> <p>[x] AI Assisted Issue<br> This issue was generated with AI assistance, but was reviewed and refined by the creator.</p> <p>[ ] AI Assisted Code<br> [ ] AI Generated Code<br> [ ] Vibe Coded</p> <p>- <strong>This issue was created with the help of AI</strong></p>