AI API

The AI API is an OpenAI-compatible HTTP service for chat completions, image generation, text-to-speech, transcription, and content tooling. One API key reaches models from Google, Anthropic, OpenAI, Qwen, and others — you pick one by its ID, such as google/gemini-3.5-flash.

Create an API key in the WP Engine User Portal, point a client that speaks the OpenAI Chat Completions API at https://api.ai.wpengine.com/v1, and start making calls. The Responses, Embeddings, and legacy Completions APIs aren’t available.

Closed beta

This documentation covers the closed AI beta. Endpoints, model availability, and rate limits may change before general availability.

Call the API directlyBrowse the model catalog, create a key, and make your first chat completion.

Use AI inside WordPressBuilding a plugin or theme? The AI Client bundled with WordPress handles auth and provider routing for you.

Connect an AI agentGive Claude Code, Claude Desktop, or any MCP client access to your WordPress sites.

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Before your first call

• Authentication — create, scope, and rotate a key
• Site and WordPress account connections — why a registered site still can't be written to

Once you are calling it

• Stream a chat completion — parse Server-Sent Events in JavaScript and PHP
• Errors — response shape and common status codes
• Rate limits — quotas and 429 handling
• API reference — every operation, with generated curl, PHP, Go, and JavaScript examples