Codesala SEO Content Engine

Codesala SEO Content Engine is a free AI SEO plugin and AI content generator for WordPress. It combines keyword research, AI article writing, on-page SEO optimisation, schema markup and an auto-blog scheduler in one lightweight plugin — and it works on activation without any API key thanks to a built-in zero-config engine that composes articles from real Wikipedia summaries and Google News headlines, with linked citations.

Use it as your AI writer, auto blog plugin, keyword research tool, JSON-LD schema generator, and automated content scheduler — all from one admin screen. Compatible with Yoast SEO, Rank Math and All in One SEO.

Why use this AI SEO plugin?

• Free forever, no API key required. The built-in engine uses only public data sources — no signup, no credit card.
• Real source-backed content, not template fluff. Every generated article is built from real Wikipedia and Google News data with citation links — useful out of the box.
• Optional best-in-class AI providers. Plug in your own free or paid key from OpenRouter, Groq, Cloudflare Workers AI, Google Gemini, Mistral, OpenAI, or Anthropic Claude — auto-fallback handles rate-limits.
• 6 keyword research sources. Google Trends, Google Suggest, YouTube Suggest, Bing Suggest, Reddit and Wikipedia — all free.
• Schema markup that ranks. JSON-LD Article + FAQPage with safe <script>-context escaping.
• Auto blog scheduler with safety brakes. Daily budget, per-hour throttle, default draft status — protects you from spammy bursts.
• Compatible with leading SEO plugins. Auto-detects Yoast, Rank Math and All in One SEO. Native fallback if none is installed.

Full feature list

• AI content generator with multi-provider fallback chain.
• Keyword research from 6 free sources (Google Trends, Google Suggest, YouTube Suggest, Bing Suggest, Reddit, Wikipedia Pageviews).
• Smart keyword scoring — long-tail boost, source-weighted, used-keyword tracking.
• Source-backed article composer — pulls real Wikipedia summaries + Google News headlines with citation links, even when no LLM is configured.
• Optional AI providers — OpenRouter, Groq, Cloudflare Workers AI, Google Gemini, Mistral, OpenAI, Anthropic Claude. All keys user-supplied.
• Royalty-free images — optional Pexels / Unsplash with SEO-optimised ALT text.
• JSON-LD schema — Article + FAQPage, escaped safely with JSON_HEX_TAG.
• Yoast / Rank Math / AIOSEO compatibility — focus keyword, meta title and description auto-filled.
• Auto blog scheduler — WP-Cron driven, daily budget, per-hour throttle, default draft status.
• Internal linking — picks 3 related posts from your archive on every generation.
• Sitemap pings — Google + Bing notification on publish (optional).
• Google Indexing API support (optional, requires service-account JSON).
• Built-in analytics — views, top posts, top keywords. Cached, no GA needed.

AI providers supported

Provider Tier Why use it

Codesala built-in engine Free, no key Always-on Wikipedia + News engine

OpenRouter Free tier DeepSeek-V3, Llama 3.3 free models

Groq Free tier Fastest Llama 3.3 70B inference

Cloudflare Workers AI Free, 10k/day Llama, Mistral, Gemma

Google Gemini Free tier Gemini 1.5 Flash

Mistral AI Free tier Mistral Small / Medium

OpenAI Paid GPT-4o-mini, top-quality long form

Anthropic Paid Claude 3.5 Haiku / Sonnet

Realistic strategy

AI content is risky if you over-do it. Recommended:

• 5–10 high-quality posts/day, not 100.
• Long-tail, low-competition keywords.
• Default status is draft so you review before publishing.

External services

This plugin connects to the third-party services listed below. Connections to optional services (LLM providers, image providers, indexing) only happen when the site administrator explicitly configures their own API keys for those services.

Wikipedia & MediaWiki APIs (always-on, used by the built-in engine)

This plugin sends the focus keyword to Wikipedia’s REST and MediaWiki APIs to fetch the article summary and full plain-text extract used as factual source material in generated articles.

• What is sent: the focus keyword string and the resolved article title.
• When: each time a post is generated using the built-in engine.
• Service: Wikipedia / MediaWiki, operated by the Wikimedia Foundation.
• Terms of use: https://foundation.wikimedia.org/wiki/Policy:Terms_of_Use
• Privacy policy: https://foundation.wikimedia.org/wiki/Policy:Privacy_policy

Wikimedia Pageviews API (when „Wikipedia Top“ keyword source is enabled)

Used to fetch the previous day’s most-viewed Wikipedia articles as a keyword source.

• What is sent: language code and the previous day’s date.
• When: when the keyword pool is refreshed.
• Service: Wikimedia Pageviews REST API.
• Terms of use: https://foundation.wikimedia.org/wiki/Policy:Terms_of_Use
• Privacy policy: https://foundation.wikimedia.org/wiki/Policy:Privacy_policy

Google Trends RSS (when „Google Trends“ keyword source is enabled)

Used to fetch daily trending searches.

• What is sent: country code.
• When: when the keyword pool is refreshed.
• Service: Google Trends.
• Terms of use: https://policies.google.com/terms
• Privacy policy: https://policies.google.com/privacy

Google Search Suggest, YouTube Suggest, Google News RSS

Used to fetch keyword autocomplete suggestions, related questions for FAQs, and news article links used as factual source material.

• What is sent: keyword strings, language and country codes.
• When: when the keyword pool is refreshed and each time a post is generated.
• Service: Google.
• Terms of use: https://policies.google.com/terms
• Privacy policy: https://policies.google.com/privacy

Bing Suggest (when „Bing Suggest“ keyword source is enabled)

Used to fetch keyword autocomplete suggestions.

• What is sent: keyword strings.
• When: when the keyword pool is refreshed.
• Service: Microsoft Bing.
• Terms of use: https://www.microsoft.com/en-us/servicesagreement
• Privacy policy: https://privacy.microsoft.com/privacystatement

Reddit Public Listings (when „Reddit Trending“ keyword source is enabled)

Used to fetch top posts from r/popular as a keyword source.

• What is sent: nothing (public listing endpoint).
• When: when the keyword pool is refreshed.
• Service: Reddit.
• Terms of use: https://www.redditinc.com/policies/user-agreement
• Privacy policy: https://www.reddit.com/policies/privacy-policy

Pexels API (only when the user has entered a Pexels API key)

Used to fetch royalty-free images for generated posts.

• What is sent: the focus keyword and the user’s Pexels API key.
• When: each time a post is generated and image fetching is enabled with Pexels selected.
• Service: Pexels.
• Terms of use: https://www.pexels.com/terms-of-service/
• Privacy policy: https://www.pexels.com/privacy-policy/

Unsplash API (only when the user has entered an Unsplash access key)

Used to fetch royalty-free images for generated posts.

• What is sent: the focus keyword and the user’s Unsplash access key.
• When: each time a post is generated and image fetching is enabled with Unsplash selected.
• Service: Unsplash.
• Terms of use: https://unsplash.com/terms
• Privacy policy: https://unsplash.com/privacy

OpenRouter (only when the user has entered an OpenRouter API key)

Optional LLM provider used for generating article content.

• What is sent: the system prompt, the user prompt (containing the focus keyword), the user’s OpenRouter API key, the configured model name, and the site’s home URL as the HTTP-Referer header.
• When: each time a post is generated and OpenRouter is the active provider.
• Service: OpenRouter.
• Terms of use: https://openrouter.ai/terms
• Privacy policy: https://openrouter.ai/privacy

Cloudflare Workers AI (only when the user has entered Cloudflare credentials)

Optional LLM provider used for generating article content.

• What is sent: the system prompt, the user prompt (containing the focus keyword), the user’s Cloudflare account ID, API token, and the configured model name.
• When: each time a post is generated and Cloudflare is the active provider.
• Service: Cloudflare Workers AI.
• Terms of use: https://www.cloudflare.com/website-terms/
• Privacy policy: https://www.cloudflare.com/privacypolicy/

Groq (only when the user has entered a Groq API key)

Optional LLM provider used for generating article content.

• What is sent: the system prompt, the user prompt (containing the focus keyword), the user’s Groq API key, and the configured model name.
• When: each time a post is generated and Groq is the active provider.
• Service: Groq.
• Terms of use: https://groq.com/terms-of-use/
• Privacy policy: https://groq.com/privacy-policy/

Google Gemini (only when the user has entered a Gemini API key)

Optional LLM provider used for generating article content.

• What is sent: the system prompt, the user prompt (containing the focus keyword), the user’s Gemini API key, and the configured model name.
• When: each time a post is generated and Gemini is the active provider.
• Service: Google Generative Language API.
• Terms of use: https://ai.google.dev/gemini-api/terms
• Privacy policy: https://policies.google.com/privacy

Mistral AI (only when the user has entered a Mistral API key)

Optional LLM provider used for generating article content.

• What is sent: the system prompt, the user prompt (containing the focus keyword), the user’s Mistral API key, and the configured model name.
• When: each time a post is generated and Mistral is the active provider.
• Service: Mistral AI.
• Terms of use: https://mistral.ai/terms/
• Privacy policy: https://mistral.ai/privacy-policy/

OpenAI (only when the user has entered an OpenAI API key)

Optional LLM provider used for generating article content.

• What is sent: the system prompt, the user prompt (containing the focus keyword), the user’s OpenAI API key, and the configured model name.
• When: each time a post is generated and OpenAI is the active provider.
• Service: OpenAI.
• Terms of use: https://openai.com/policies/row-terms-of-use/
• Privacy policy: https://openai.com/policies/row-privacy-policy/

Anthropic Claude (only when the user has entered an Anthropic API key)

Optional LLM provider used for generating article content.

• What is sent: the system prompt, the user prompt (containing the focus keyword), the user’s Anthropic API key, and the configured model name.
• When: each time a post is generated and Anthropic is the active provider.
• Service: Anthropic.
• Terms of use: https://www.anthropic.com/legal/consumer-terms
• Privacy policy: https://www.anthropic.com/legal/privacy

Google Sitemap Ping (when „Auto ping Google“ is enabled)

Used to notify Google about updated sitemaps after publishing posts.

• What is sent: the public URL of the site’s sitemap.
• When: each time a post is published if „Auto ping Google“ is enabled.
• Service: Google.
• Terms of use: https://policies.google.com/terms
• Privacy policy: https://policies.google.com/privacy

Bing Sitemap Ping (when „Auto ping Bing“ is enabled)

Used to notify Bing about updated sitemaps after publishing posts.

• What is sent: the public URL of the site’s sitemap.
• When: each time a post is published if „Auto ping Bing“ is enabled.
• Service: Microsoft Bing.
• Terms of use: https://www.microsoft.com/en-us/servicesagreement
• Privacy policy: https://privacy.microsoft.com/privacystatement

Google Indexing API (only when enabled and a service-account JSON key is configured)

Used to submit individual URLs to Google’s indexing service for faster discovery.

• What is sent: the public URL of the published post, signed with the user’s Google service-account JWT (via Google’s OAuth 2.0 token endpoint).
• When: each time a post is published if „Submit to Google Indexing API“ is enabled.
• Service: Google Indexing API + Google OAuth 2.0.
• Terms of use: https://policies.google.com/terms
• Privacy policy: https://policies.google.com/privacy

Privacy

This plugin does not collect or transmit visitor personal data. Data sent to the third-party services listed above consists of: keyword strings entered or selected by the site administrator, language/country codes from settings, and (when applicable) the user’s own API keys passed to the corresponding provider. The plugin stores its own data locally in the WordPress options table and a custom wp_csrm_stats table (post id, event type, keyword, provider name, sanitized referer, timestamp). No IP addresses, no cookies, and no visitor identifiers are stored.