What is the Polylang MCP server?
The Polylang MCP server from AcrossAI lets Claude, ChatGPT, Cursor and any other MCP client set post languages, link translations and check what each post already has on your WordPress site. It runs inside WordPress through the free Abilities Manager and MCP Manager plugins, and works through Polylang itself — with no third-party relay in between.
Looking for another plugin? Browse all WordPress MCP integrations or the Multilingual integrations.
What your AI can do with Polylang
Polylang decides which language every post is in and which posts are translations of each other. These abilities let an AI assistant assign languages, link translations and check what each post already has — through Polylang’s own functions, so the language switcher and hreflang tags stay right.
Set a post’s language
Give any post or page its language, recorded exactly as Polylang expects.
Link translations
Group posts in different languages as translations of one another.
See what exists
Get every translation of a post as language code → post ID.
Works through Polylang
Uses pll_set_post_language() and pll_save_post_translations(), the functions Polylang itself uses.
Troubleshooting
Translations not connecting? Three reasons it happens quietly.
Each of these leaves the translated post published while visitors and search engines never find it.
The post has no language
Posts created by an import or the REST API often have none. Set Post Language assigns it.
The posts aren’t linked
Two translations that aren’t grouped send the switcher to the home page. Link Post Translations connects them.
A language is missing from the group
Linking only two of three posts drops the third. Get Post Translations shows the whole group first.
Try asking
Paste one into Claude, ChatGPT or Cursor once your site is connected.
“Set post 88 to French.”
“Make post 88 the French version of post 42.”
“Which translations does the About page have?”
“Is the pricing page translated into Spanish?”
“Assign German to the three drafts I just imported.”
“Link the English, French and Hindi versions of the Contact page.”
AcrossAI vs WPVibe vs Novamira for Polylang
Three ways to connect an AI assistant to Polylang. The difference is where the MCP server runs and what sits between your AI and your site.
| AcrossAI | WPVibe | Novamira | |
|---|---|---|---|
| Where the MCP server runs | On your WordPress site | Hosted gateway at mcp.wpvibe.ai | On your WordPress site |
| Third-party relay | None | Every call passes through WPVibe’s cloud | None |
| How it works with Polylang | 3 dedicated Polylang abilities, each labelled read-only, write or destructive | Plugin abilities, REST API and WP-CLI | General PHP access; no dedicated Polylang specialization listed |
| Designed for | Production sites, with risky changes gated behind confirm | Any host reachable over HTTPS | Dev and staging environments with backups |
| Price | Free, including every Polylang ability | Free plan with a daily action allowance; paid tiers | Free core; specializations in Novamira Pro |
Based on each product’s own published documentation, September 2026.
Polylang + AI questions
Is there an MCP server for Polylang?
Yes. AcrossAI turns your WordPress site into an MCP server with 3 dedicated Polylang abilities, so Claude, ChatGPT, Cursor or a local model can work with Polylang directly. It’s free on WordPress.org.
Can ChatGPT or Claude manage Polylang?
Yes, once your site is connected over MCP. Ask in plain English and your AI calls the Polylang abilities on this page, with risky changes gated behind an explicit confirm.
Is the Polylang integration free?
Yes. All of its abilities ship in Abilities Manager, which is free on WordPress.org.
Can the AI translate the text itself?
Your AI writes the translation; these abilities put it in the right place in Polylang — setting the language and linking it to the original.
Does it work with both Polylang and WPML?
Yes. The same abilities detect which plugin is active and use it: Polylang’s functions or WPML’s language hooks.
Which AI assistants work with it?
Any MCP client: Claude, ChatGPT, Gemini, Grok, Cursor, Claude Code, and local runtimes such as Ollama, LM Studio and Open WebUI.
Does my site data pass through AcrossAI’s servers?
No. Your WordPress site runs the MCP server and your AI client connects to it directly. There is no hosted gateway in the middle.
Is AcrossAI affiliated with Polylang?
No. AcrossAI built and maintains this integration independently, using Polylang’s public APIs.