Refactor wp ai to use https://github.com/WordPress/wp-ai-client, which is proposed for WP 7.0. Right now it's bundled with the AI plugin at https://github.com/WordPress/ai

This package here should be rewritten to use that AI client if it's available.

We can include it as a dev-dependency (composer require wordpress/wp-ai-client) for PHPStan stubs perhaps.

1. Credentials Management
   Command: wp ai credentials
   Manage the API keys stored in the wp_ai_client_provider_credentials option.

• wp ai credentials list
  • Description: Lists all configured providers and their status (masked key).
  • Implementation: Fetch wp_ai_client_provider_credentials option. Use
    API_Credentials_Manager::get_all_cloud_providers_metadata() to cross-reference available providers vs. configured ones.
• wp ai credentials get <provider_id>
  • Description: Get the API key for a specific provider.
  • Example: wp ai credentials get openai
• wp ai credentials set <provider_id> <api_key>
  • Description: Set or update the API key for a provider.
  • Implementation: Fetch the option array, update the key for the provider ID, and write it back using update_option.
• wp ai credentials delete <provider_id>
  • Description: Remove an API key.

2. AI Generation
   Command: wp ai generate
   Execute a prompt using the AI_Client::prompt() fluent interface.

• Arguments:
  • : The text prompt to send.
• Options (Flags mapping to Prompt_Builder methods):
  • --model=: Maps to using_model().
  • --provider=: Maps to using_provider().
  • --temperature=: Maps to using_temperature().
  • --max-tokens=: Maps to using_max_tokens().
  • --system-instruction=: Maps to using_system_instruction().
  • --format=<json|text>: Maps to as_json_response() or defaults to text.
• Example:

1 wp ai generate "Write a haiku about WordPress" --provider=openai --temperature=0.7

• Implementation:
  1. Call AI_Client::prompt( $prompt_arg ).
  2. Iterate over flags. If --temperature is set, call $builder->using_temperature( $val ).
  3. Call $builder->generate_text() and output the result.

3. System Status & Diagnostics
   Command: wp ai status
   Check if the environment is ready for AI operations.

• Description: Checks which capabilities are currently supported based on the environment and credentials.
• Implementation:
  • Instantiate a builder: $builder = AI_Client::prompt();
  • Run checks:
    • Text Generation: + $builder->is_supported_for_text_generation()
    • Image Generation: + $builder->is_supported_for_image_generation()
  • Output a table of supported capabilities (Yes/No).

All the wp mcp commands are not really needed anymore