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AI Content Assistant

A small, production-minded WordPress plugin that generates post content **from inside the block editor** using the **OpenAI** or **Claude (Anthropic)** API.

by Vinay Paudel · github.com/paudelvinay/ai-content-assistant · website

★ 0stars

Install

Download source zip No release zip yet

This is the repository archive. It installs, but the folder name will carry the branch suffix and updates will not flow.

Install straight from GitHub with WP-CLI:

wp plugin install https://github.com/paudelvinay/ai-content-assistant/archive/refs/heads/main.zip
No built-in updater. New versions won't appear under Dashboard → Updates. Install new releases yourself, or let Git Updater track the repository.
Readme github.com/paudelvinay/ai-content-assistant ↗

A small, production-minded WordPress plugin that generates post content from inside the block editor using the OpenAI or Claude (Anthropic) API.

It adds:

  • a Gutenberg block ("AI Content Generator") — type a prompt, click Generate, get editable paragraphs;
  • a secure REST endpoint (POST /wp-json/aica/v1/generate) that the block calls;
  • a provider abstraction so the same call works against OpenAI or Anthropic;
  • a settings page (Settings → AI Content Assistant) for provider, API key and model.

Built as a compact, readable example of custom plugin + Gutenberg block + WP REST API + AI integration, following WordPress security practices.

Why it's structured this way

The AI never writes raw markup. The block sends a plain-text prompt to a REST endpoint; the server calls the provider and returns text, which lands in an editable RichText field. Output stays predictable and the editor stays in control — the same principle I'd apply to a larger AI-driven site builder.

How it works

Editor block ──POST /aica/v1/generate──▶ REST controller ──▶ Provider (OpenAI | Anthropic) ──▶ text
   ▲  (capability + nonce checked)              (prompt sanitised)                                │
   └──────────────── editable RichText ◀─────────────────────────────────────────────────────────┘
  • ai-content-assistant.php — bootstraps the plugin and registers the block script/style with explicit dependencies.
  • includes/class-settings.php — settings screen + sanitised option access.
  • includes/class-provider.php — OpenAI and Anthropic request handling via wp_remote_post().
  • includes/class-rest-controller.php — the REST route, with permission_callback and argument sanitisation.
  • src/ — the block (block.json, index.js, editor.css).

Security notes

  • REST route requires current_user_can( 'edit_posts' ); apiFetch sends the WordPress nonce automatically.
  • Prompt is sanitised with sanitize_textarea_field and validated as non-empty.
  • API key can be overridden with a AICA_API_KEY constant in wp-config.php so it never has to live in the database on production.
  • Direct file access is blocked (ABSPATH guard) and output is escaped.

Install

  1. Copy the ai-content-assistant folder into wp-content/plugins/.
  2. Activate AI Content Assistant in Plugins.
  3. Go to Settings → AI Content Assistant, choose a provider, paste your API key, set a model (gpt-4o-mini for OpenAI, claude-3-5-sonnet-latest for Anthropic).
  4. In any post, add the AI Content Generator block, enter a prompt, and click Generate.

Configuration

Recommended for production — keep the key out of the database:

// wp-config.php
define( 'AICA_API_KEY', 'sk-...' );

Requirements

  • WordPress 6.0+
  • PHP 7.4+
  • An OpenAI or Anthropic API key

Notes on the build

The block is written in plain JavaScript so the plugin runs with no build step. In a production project I'd author it in JSX and compile with @wordpress/scripts (npm run build), which also generates the dependency/version asset file automatically.

License

GPL-2.0-or-later