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SlyTranslate

SlyTranslate

Par Timon
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Description

SlyTranslate brings practical AI translation to WordPress. It is built for teams that need translation directly in editing workflows and also want the same workflows available through REST and MCP automation.

Why this plugin?

Use SlyTranslate when you need one consistent translation workflow for:

  • page/post translation in wp-admin
  • inline selected-text translation in Gutenberg
  • Gutenberg block translation
  • bulk translation from list-table actions
  • SEO title/description translation in the same process

Internal flow (short):

  • Uses native WordPress AI connectors through wp_ai_client_prompt().
  • Registers translation workflows as WordPress Abilities.
  • Exposes abilities over REST (/wp-abilities/v1/) and MCP discovery.
  • Supports long/structured content with chunking and output validation.
  • Optional direct_api_url supports OpenAI-compatible endpoints for model-specific payload needs.
  • In WP Multilang mode, translation state is detected from language-specific content so placeholder titles do not count as completed translations.
  • List-table translation now includes an explicit overwrite option with a confirmation step.

Abilities:

Ability
Purpose

ai-translate/get-languages
List languages exposed by the active language plugin

ai-translate/get-translation-status
Show translation status for a content item, including source_language and single_entry_mode

ai-translate/set-post-language
Change the language assignment of an existing content item (only exposed when supported, e.g. Polylang)

ai-translate/get-untranslated
Find content still missing a target translation

ai-translate/translate-text
Translate arbitrary text

ai-translate/translate-blocks
Translate serialized Gutenberg blocks

ai-translate/translate-content
Create or update one translated post/page/CPT entry (call get-translation-status first; optional source_language + overwrite)

ai-translate/translate-content-bulk
Bulk-translate multiple entries (supports optional source_language and overwrite)

ai-translate/get-progress
Return live progress for a running translation

ai-translate/cancel-translation
Cancel a running translation

ai-translate/get-available-models
List models from configured connectors

ai-translate/save-additional-prompt
Save per-user additional instructions

ai-translate/configure
Read or update persistent plugin settings

Requirements:

  • WordPress 6.9+
  • PHP 8.1+
  • An AI connector configured in WordPress (Settings > Connectors)
  • A supported language plugin (Polylang or WP Multilang) for content-translation workflows across posts/pages/CPTs
  • WordPress MCP Adapter if you want MCP discovery

Supported plugins:

  • Language plugin: Polylang, WP Multilang
  • SEO plugins: Genesis SEO, Yoast SEO, Rank Math, All in One SEO, The SEO Framework, SEOpress, Slim SEO

Supported model profiles:

Any LLM available through a WordPress AI connector works out of the box — no special configuration needed. The following model families additionally have dedicated built-in profiles that tune prompt style, chunking, and retry behavior for better results:

  • TranslateGemma: dedicated runtime with chat_template_kwargs support through direct_api_url
  • TowerInstruct / Salamandra: bilingual framing, conservative chunking, stricter retry behavior
  • Nvidia Nemotron: system-prompt-aware with reasoning-disable and provider-parameter forwarding
  • Qwen 3.x / GLM-4.6v / Gemma 4 / Phi-4: thinking-aware profiles
  • EuroLLM / Llama 3.1-8B / SauerkrautLM: conservative chunking tuned for European languages
  • Ministral-3 / Ministral-8B: optimized for the Ministral model family

Captures d’écran

  • Panel UI in page/post
  • Inline translation
  • Gutenberg block translation
  • Page/post translation and bulk action
  • Translation UI overview

Installation

  1. Ensure WordPress 6.9+ and PHP 8.1+ are running.
  2. Install and configure an AI connector in Settings > Connectors.
  3. Optional for content translation: install and activate Polylang or WP Multilang.
  4. Optional for local llama.cpp models: install AI Provider for llama.cpp.
  5. Optional for other OpenAI-compatible local/self-hosted endpoints: install Ultimate AI Connector for Compatible Endpoints.
  6. Optional for MCP discovery: install and activate WordPress MCP Adapter.
  7. Upload the slytranslate folder to /wp-content/plugins/.
  8. Activate SlyTranslate.

FAQ

Does this work without a language plugin?

Yes, for text and block translation (translate-text, translate-blocks, inline selected-text workflow). Content translation workflows require a supported language plugin (Polylang or WP Multilang).

Where are API keys configured?

In WordPress Settings > Connectors, not inside SlyTranslate.

Can I use bulk translation from post/page lists?

Yes. Use translate-content-bulk through abilities or the wp-admin list-table translation UI.

How does overwriting existing translations work?

In the list-table dialog, Overwrite existing translation is off by default. If a translation already exists, you must enable overwrite and confirm before the translation starts.

Can I change the language assignment of an existing post without running translation?

Yes, when the active language plugin supports language mutation (currently Polylang). In that case ai-translate/set-post-language is exposed and can be called with post_id and target_language. By default language conflicts fail with language_conflict; use force to opt in, and pass relink=true when translation relations should be rewritten. In WP Multilang mode this ability is not exposed.

How do I control prompts and style?

Use ai-translate/configure for persistent defaults and additional_prompt on translate-* abilities for per-request instructions.

Which model-specific profiles are supported?

Any LLM from a WordPress AI connector works without configuration. Built-in dedicated profiles exist for: TranslateGemma, TowerInstruct, Salamandra, Nvidia Nemotron, Qwen 3.x, GLM-4.6v, Gemma 4, Phi-4, EuroLLM, Llama 3.1-8B, SauerkrautLM, Ministral-3, and Ministral-8B. Additional profiles can be registered via the slytranslate_model_profiles filter.

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