Add agent skill and drush generator for AI Provider plugins
>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #3582571. --> Reported by: [marcus_johansson](https://www.drupal.org/user/385947) Related to !1429 >>> <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 AI Provider plugins<br> <strong>Check-in Date: </strong>MM/DD/YYYY<br> [/Tracker]</p> <h3 id="summary-problem-motivation">Problem/Motivation</h3> <p>Creating an AI Provider plugin is one of the most common extension points in the AI module, but also one of the most complex. A provider must implement operation types (chat, embeddings, text-to-image, etc.), handle authentication, manage model discovery, and integrate with the provider configuration system. There is documentation, but no structured agent skill or scaffolding tool.</p> <p>An agent skill under <code>.agent/skills/create-ai-provider/SKILL.md</code> would give AI coding agents the structured instructions they need to help developers create a complete provider plugin. A Drush generate command would scaffold the boilerplate files.</p> <h3 id="summary-proposed-resolution">Proposed resolution</h3> <ul> <li>Create <code>.agent/skills/create-ai-provider/SKILL.md</code> describing how to create an AI Provider plugin, including the <code>@AiProvider</code> attribute, required interface methods, operation type support, authentication setup, and model discovery.</li> <li>Include a complete working example of a minimal provider plugin in the skill file.</li> <li>Add a Drush generate command (<code>drush generate ai-provider</code>) that scaffolds the plugin class, services file, and module structure with the correct namespace and attribute.</li> <li>The skill should reference the existing documentation and the example DropAI provider under <code>examples/</code>.</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>
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