Oxygen AI Positron 8.4 is now available for all major Oxygen XML suite products!
September 22, 2026
Submitted by Alin Belu.
Syncro Soft is proud to announce the immediate availability of the Oxygen AI Positron 8.4 plugins for all major Oxygen XML suite products, including Oxygen XML Editor, Author, Developer (desktop and Eclipse distributions), Oxygen JSON Editor, Oxygen XML Web Author, and Oxygen Content Fusion.
Version 8.4 introduces a major interoperability enhancement by allowing Oxygen AI Positron to run as a local MCP (Model Context Protocol) HTTP server, making it possible for third-party AI assistants such as Claude Desktop, Claude Code, Open Code, and Cursor to connect to Oxygen and use the tools contributed by AI Positron. This release also improves how AI-generated edits are merged into documents, adds support for AI clarification questions, expands the available AI model selection, and provides new productivity tools for advanced documentation workflows.
New in Oxygen AI Positron 8.4
****************************************
* Local MCP Server Support
The AI Positron add-on can now operate as a local MCP HTTP server, enabling external AI assistants to connect to Oxygen and use AI Positron tools. A new Oxygen MCP Server preferences page is available in Preferences / Plugins / Oxygen AI Positron, where you can configure the MCP server port, start or stop the local server, and copy the MCP configuration JSON for use in third-party AI assistants.
When external AI assistants make file changes through the Oxygen MCP Server tools, a new status button appears in the Chat view, allowing you to accept, modify, or reject those changes. The MCP server can also provide external AI assistants with contextual information from the open Oxygen application, including open documents, DITA Maps Manager information, selected content, project context prompts, and available skills.
* Enhanced AI-assisted Editing
AI-generated changes are now merged directly into documents instead of overwriting and reloading files. If Track Changes is enabled, AI edits are recorded as tracked changes, making them easier to review, accept, or reject. AI Positron can also ask clarifying questions when a prompt needs more detail, helping the AI better understand the intended result before making changes.
The built-in Rewrite and Translate to... actions now use targeted edits instead of regenerating the entire document, improving performance, reducing token usage, and better preserving markup and formatting, especially in large files.
* Expanded AI Model Support
Oxygen AI Positron 8.4 adds support for new models across multiple AI providers, offering more flexibility for balancing quality, reasoning, speed, and cost.
New and updated model options include:
- OpenAI: GPT-5.6 Sol, Terra, Luna, and their Thinking variants. GPT-5.6 Terra with adaptive thinking is now the default for AI Positron Service subscriptions.
- Anthropic: Claude Sonnet 5 and Claude Opus 5 are available with AI Positron Service subscriptions.
- Google: Gemini 3.8 Flash, Gemini 3.7 Flash, Gemini 3.6 Flash, and Gemini 3.5 Flash Lite are available with AI Positron Service subscriptions.
- xAI: Grok 4.6, 4.5, and 4.3 are available for Enterprise users.
- Voice transcription: The speech-to-text model used for voice prompts has been updated from GPT-4o Transcribe to GPT Transcribe for AI Positron Service and OpenAI external connections.
For Microsoft Azure and AWS Bedrock connectors, users can now manually set the Maximum context window size. This helps AI Positron accurately display context usage and ensures that automatic context compaction works correctly when model deployments or IDs are custom-defined.
* Improved Chat Experience and Productivity
AI Positron now renders Markdown responses in a rich, browser-like preview and provides more detailed context usage information for both external AI connections and Oxygen AI Positron Service connections. You can also attach folders to chat messages, and AI-generated command-line commands can now use environment variables to help protect secret tokens.
Additional improvements include support for organizing AI actions into sub-categories, displaying human-readable names for MCP tools, better handling of pending AI Positron changes in sandbox files, automatic resizing of large images before sending them to the AI model, and wildcard support in the Unsafe tool auto-approval preferences page.
* New Validation and Transformation Tools
Version 8.4 adds new tools for validation and publishing workflows. The validate_and_check_for_completeness tool helps you catch document errors and broken references during chat sessions, while validate_with_schematron supports validation against existing Schematron files or newly generated rules based on user requirements.
New transformation scenario tools also allow the AI to discover available scenarios, run selected transformations, and inspect output logs or validation errors, helping automate publishing, testing, and verification tasks directly from Oxygen.
The new validation and transformation tools require the upcoming Oxygen XML 29 or newer. You can benefit of early access to these features by contacting the Oxygen XML support at support@oxygenxml.com.
Availability
****************************************
Oxygen AI Positron 8.4 is available for Oxygen XML Editor, Author, and Developer (desktop and Eclipse), JSON Editor, Web Author, and Content Fusion. This release reaffirms Syncro Soft’s commitment to empowering XML professionals with the most advanced and user-friendly AI tools on the market.
For the complete list of features added in Oxygen AI Positron 8.4, please see:
https://www.oxygenxml.com/ai_positron/whats_new.html
For more information about the Oxygen AI Positron plugins visit:
https://www.oxygenxml.com/ai_positron.html
Webinar
****************************************
For a hands-on exploration of the newest features in Oxygen AI Positron, designed to make AI an active partner in your documentation lifecycle, join the free webinar taking place on October 21 - Beyond the Chatbot: Harnessing Agentic AI, MCP, and Validation Tools with Oxygen AI Positron.
The event is free, but registration is required - https://oxygenxml.com/evs2026-7.html
About Syncro Soft
****************************************
Syncro Soft develops the industry-acclaimed Oxygen suite of products, facilitating teams in small businesses, Fortune 500 enterprises, universities, government agencies, and international organizations in authoring documents, publishing in different formats, collaborating with team members, and managing content.
The complete Oxygen product suite includes XML Author for user-friendly visual XML authoring, XML Web Author for in-browser intuitive editing and reviewing, the easy-to-use and flexible Content Fusion collaboration platform, many publishing tools such as PDF Chemistry for obtaining PDF using CSS styles, WebHelp for modern and responsive HTML5 output, the Oxygen Feedback flexible commenting platform, Oxygen Publishing Engine, and Oxygen Scripting for automating publishing, validation, and many other tasks. Customizing XML applications can be done using the XML Developer and the flagship product, Oxygen XML Editor, provides an all-in-one comprehensive XML authoring, publishing, and development tool.
Oxygen is a registered trademark of Syncro Soft in the U.S and other countries. Any other trademarks or service marks contained herein are the property of their respective owners.
SOURCE: Syncro Soft SRL