Validate and protect each provider key.
Add an OpenAI, Anthropic or Gemini key. The Hub tests it, encrypts it and shows only the final four characters when you return.
Opace AI Hub · WordPress Plugin
Free OpenAI, Claude & Gemini API Integration WordPress Plugin
A free OpenAI, Claude & Gemini API integration WordPress plugin: store encrypted provider keys, discover models and share prompts and usage data across compatible Opace plugins.
Watch the walkthrough
Opace AI Hub: Free OpenAI, Claude & Gemini API Integration WordPress Plugin WordPress 
View larger ↗ Full walkthrough · 4:44
See every shared provider control in one walkthrough.
Watch the full product demonstration, then open it on YouTube whenever you want chapters, captions or a larger player.
How it fits together
Add a key once for compatible Opace plugins.
Opace AI Hub keeps provider infrastructure in one place. Compatible plugins ask the Hub for the connection, model and request shape they need.
Use the models your account exposes.
Model lists come directly from the configured account. Provider-aware defaults update when a saved choice disappears, while valid choices are preserved.
Give each plugin the same maintained connection.
Compatible plugins call the public PHP API. Requests, tokens, errors and estimated cost are recorded under the calling tool's name.
What it does
One AI integration WordPress plugin for provider keys, models and usage.
The Hub handles the shared work that should not be rebuilt inside every AI integration WordPress plugin.
01
Settings
Keys, live models and provider controls in one screen.
Connect OpenAI, Anthropic Claude and Google Gemini, test each key, refresh its models and select the default provider used by add-ons.
Each selected model receives only the controls it supports, including reasoning effort, thinking level, output tokens and temperature where the provider accepts them.
- Test Prompt supports text and images and can load an instruction from the Prompt Library.
- Model caching and usage-statistics switches remain under the administrator's control.
- Uninstall settings ask whether Hub-owned data should be kept or removed.
View larger ↗ 02
Prompt Library
Keep reusable prompts organised and runnable.
The Hub doubles as an AI prompt library WordPress plugin: group and search prompts, edit them in place and run text or image prompts directly from a library card.
- Create prompts and groups with search and group filters.
- Import and export JSON or CSV using supplied templates.
- Delete All stays behind an explicit confirmation.
View larger ↗ 03
Statistics
See usage by provider, tool and model.
Review request counts, input and output tokens, errors and estimated cost. Pricing comes from published rates in the public LiteLLM catalogue and is refreshed every 12 hours.
- Unknown prices show Cost unavailable instead of a false zero.
- Refresh Model Pricing retrieves the current public catalogue.
- Reset Statistics is an explicit administrator action.
View larger ↗ 04
Dashboard and companion plugins
Connect AI Scribe and other compatible plugins.
Provider status, model totals, quick statistics and direct links keep the active configuration clear. The Add-ons screen shows whether AI Scribe is installed and active.
- See whether AI Scribe is installed, active and ready to use.
- Share providers, models and prompts with compatible Opace plugins.
- A developer example shows how another plugin can call the Hub.
05
WordPress 7 AI Client
One credential at runtime, without copying secrets.
On WordPress 7.0 or newer, an encrypted Hub key can authenticate the matching core AI provider for the current request. WordPress Connector credentials take precedence when both stores contain a key.
Keys are never copied between Opace AI Hub and WordPress Connectors. WordPress 6.5 to 6.9 continues to use the Hub's direct provider integration.
View larger ↗ Supported providers
Use the providers configured for this WordPress site.
Model choices are discovered from the configured account and filtered by capability.
| Provider | Text | Images | Structured output |
|---|---|---|---|
| OpenAI | Yes | Yes | JSON schema |
| Anthropic Claude | Yes | No | Forced tool calls |
| Google Gemini | Yes | Yes | Response schemas |
Encrypted keys · No Opace analytics
Keep provider keys on your WordPress site.
Opace AI Hub keeps credentials on your WordPress site and sends generation data only to the provider selected for that request.
- 01AES-256-CBC encryption at rest, with a random initialisation vector for every saved value.
- 02Encryption fails closed. A key is never stored as plain text when encryption is unavailable.
- 03Keys are not returned to the browser. Administrators see only the final four characters.
- 04No Opace analytics or user tracking, and nothing is routed through Opace servers.
- 05Pricing lookups send only the provider name and model identifier.
- 06Uninstall offers an explicit retain-or-remove choice for Hub-owned data.
Install
Install the Hub first, then AI Scribe.
Start with Opace AI Hub so every compatible plugin has one shared source for providers, prompts and usage records.
Current public release: 1.0.17 on GitHub and WordPress.org. WordPress 6.5+ · PHP 7.4+ · Tested up to WordPress 7.1.
WordPress installation
01 Plugins → Add New Plugin → Upload Plugin
02 Upload opace-ai-prompt-library-api-hub.zip
03 Activate Opace AI Hub
04 Opace AI Hub → Settings → add a key → Test Key
05 Choose a default provider and save
06 Install AI Scribe or another compatible pluginQuestions before installing
Installation, providers, costs and data questions.
Does Opace AI Hub include an API key or free AI usage?
No. Obtain a key directly from OpenAI, Anthropic or Google. The provider charges your account for usage under its own pricing and terms.
Does Opace AI Hub generate content by itself?
No. It manages provider connections, models, prompts and usage data. Install a compatible plugin such as AI Scribe to generate content.
How does the WordPress core AI Client integration work?
The core AI Client on WordPress 7.0 or newer can use multiple configured providers, discover suitable models and generate text or images. Opace AI Hub uses a Connector credential without copying it into Hub storage. If the key is stored in the Hub, the Hub supplies its decrypted value to the matching WordPress provider for that request only, so external plugins using the core client can use it too. The official OpenAI, Anthropic or Google provider plugin must be active. When both stores contain a key, WordPress Connectors takes precedence. WordPress 6.5 to 6.9 continues to use the Hub's direct provider integration.
Can I use more than one provider?
Yes. You can save keys for multiple supported providers, so one install works as a Claude API WordPress plugin and a Gemini API WordPress plugin alongside OpenAI. A compatible plugin can use one provider for text and another for images.
Why is a model missing?
Opace AI Hub asks each provider which models your key can access. Availability can differ by account, region and provider rollout.
Are API keys visible to browser visitors?
No. Keys stored by Opace AI Hub are server-side, encrypted at rest, and are not printed into public pages or normal Hub responses. WordPress Connector credentials remain under WordPress core's storage rules and are not copied into the Hub. Other trusted server-side plugins can use the Hub or WordPress AI Client APIs.
What happens when I uninstall Opace AI Hub?
Opace AI Hub keeps its data by default because other plugins may depend on it. To remove all Opace AI Hub-owned credentials, settings, prompt tables, statistics and caches, turn off Persist Settings on Uninstall before deleting the plugin. Opace AI Hub does not delete another plugin's data.
For developers
Use one public PHP API.
The example below uses the Hub as an OpenAI API WordPress plugin. The server-side ai_core() helper exposes provider defaults, request options, text and image generation, response extraction and usage records. Provider credentials must never be printed into HTML, JavaScript, logs or public API responses.
Plugin integration
if ( ! function_exists( 'ai_core' ) ) {
return;
}
$provider = 'openai';
$model = ai_core()->get_default_model_for_provider( $provider );
if ( ! $model ) {
return;
}
$response = ai_core()->send_text_request(
$model,
array(
array(
'role' => 'user',
'content' => 'Write a concise headline about tea.',
),
),
ai_core()->get_provider_options( $provider, $model ),
array( 'tool' => 'my-plugin' )
);
if ( is_wp_error( $response ) ) {
$message = $response->get_error_message();
} else {
$text = AICore\AICore::extractContent( $response );
}Created by Opace Digital Agency
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OpenAI, Anthropic and Gemini in WordPress
Connect providers once with a free OpenAI, Claude & Gemini API integration WordPress plugin.
Complete the publishing workflow Turn shared providers and prompts into finished WordPress articles. Add AI Scribe for guided writing, images, SEO checks and controlled publishing. Get AI Scribe → Custom WordPress development Need an AI workflow built around your team? Bring us the awkward process, plugin gap or integration problem. We will help you turn it into a practical build. Plan it with Opace ↗
Browse all Opace tools Opace AI Hub is independently developed by Opace Digital Agency and is not affiliated with, endorsed by or sponsored by OpenAI, Anthropic or Google. Licensed under GPL-2.0 or later.