✨ AI Assistant for Writer

How to Install AI Assistant for Writer

Download the OXT extension file, open LibreOffice, choose Tools, Extensions, click Add, and select the downloaded file. Install the extension for the current user and restart LibreOffice.

Open a Writer document, select some text, right-click the selection, and open the AI Assistant submenu. You can correct, rewrite or summarize the selected text.

Why Use AI Assistant for Writer

• Correct spelling, grammar, punctuation and syntax
• Rewrite selected text while preserving its meaning
• Summarize long paragraphs directly in Writer
• Review the generated result before replacing the original text
• Use local AI models through Ollama
• Use OpenAI models through the OpenAI API
• Configure the provider without storing API keys in documents
• Works directly inside LibreOffice Writer
• Available for Windows, macOS and Linux
• Free extension with support for local AI processing

Requirements and Limitations

The extension requires LibreOffice 24.2 or newer and the LibreOffice Python scripting component. An AI provider must be configured before using the commands. Ollama must be installed, running and have the selected model available. OpenAI requires a valid API key and an account with API access. OpenAI API usage may generate charges.

Privacy and Data Processing

With a local Ollama model, selected text is sent to the Ollama service running on your computer. With OpenAI, selected text is transmitted to the OpenAI API for processing. Do not send confidential information to an external provider unless its data handling policy is suitable for your use case.

Available AI Commands

• Correct a selected paragraph
• Improve spelling and grammar
• Rewrite text in a clearer style
• Rephrase text while preserving its meaning
• Summarize a long passage
• Prepare concise notes from selected content
• Improve drafts without leaving LibreOffice Writer

Configure the Extension With Ollama

Ollama is the default provider. Install Ollama, start its local service, download a model, and configure the extension to use the same model name. The default Ollama server address is http://localhost:11434.

• Install Ollama from https://ollama.com/download
• Download a model with: ollama pull gemma4:e2b
• Set LIBREOFFICE_AI_PROVIDER to ollama
• Set LIBREOFFICE_AI_OLLAMA_MODEL to gemma4:e2b
• Optional: set LIBREOFFICE_AI_OLLAMA_BASE_URL to http://localhost:11434
• Completely close and restart LibreOffice after changing environment variables

Ollama Configuration on Windows

Run the following commands in PowerShell. These commands save the settings for the current Windows user.

• [Environment]::SetEnvironmentVariable("LIBREOFFICE_AI_PROVIDER", "ollama", "User")
• [Environment]::SetEnvironmentVariable("LIBREOFFICE_AI_OLLAMA_MODEL", "gemma4:e2b", "User")
• [Environment]::SetEnvironmentVariable("LIBREOFFICE_AI_OLLAMA_BASE_URL", "http://localhost:11434", "User")
• Close every LibreOffice window and restart LibreOffice

Ollama Configuration on Linux or macOS

Export the variables before starting LibreOffice from the same terminal. To keep the configuration after a restart, add the exports to the appropriate shell profile.

• export LIBREOFFICE_AI_PROVIDER="ollama"
• export LIBREOFFICE_AI_OLLAMA_MODEL="gemma4:e2b"
• export LIBREOFFICE_AI_OLLAMA_BASE_URL="http://localhost:11434"
• Start LibreOffice from the same terminal session

Configure the Extension With OpenAI

Create an OpenAI API key and store it in the OPENAI_API_KEY environment variable. The extension uses the OpenAI Responses API. Its default OpenAI model is gpt-5-mini and its default API address is https://api.openai.com/v1.

• Create an API key at https://platform.openai.com/api-keys
• Set LIBREOFFICE_AI_PROVIDER to openai
• Set OPENAI_API_KEY to your private API key
• Optional: set LIBREOFFICE_AI_OPENAI_MODEL to gpt-5-mini
• Optional: set LIBREOFFICE_AI_OPENAI_BASE_URL to https://api.openai.com/v1
• Never publish or share your OpenAI API key
• Completely close and restart LibreOffice after changing environment variables

OpenAI Configuration on Windows

Run these commands in PowerShell and replace your-api-key with your own OpenAI API key.

• [Environment]::SetEnvironmentVariable("LIBREOFFICE_AI_PROVIDER", "openai", "User")
• [Environment]::SetEnvironmentVariable("OPENAI_API_KEY", "your-api-key", "User")
• [Environment]::SetEnvironmentVariable("LIBREOFFICE_AI_OPENAI_MODEL", "gpt-5-mini", "User")
• Close every LibreOffice window and restart LibreOffice

OpenAI Configuration on Linux or macOS

Export the variables before starting LibreOffice. Replace your-api-key with your own OpenAI API key.

• export LIBREOFFICE_AI_PROVIDER="openai"
• export OPENAI_API_KEY="your-api-key"
• export LIBREOFFICE_AI_OPENAI_MODEL="gpt-5-mini"
• Start LibreOffice from the same terminal session

Optional Connection Settings

The request timeout is 120 seconds by default. It can be changed with LIBREOFFICE_AI_TIMEOUT. Custom Ollama or OpenAI-compatible server addresses can be configured with the corresponding base URL variables.

• LIBREOFFICE_AI_TIMEOUT controls the timeout in seconds
• LIBREOFFICE_AI_OLLAMA_BASE_URL controls the Ollama server address
• LIBREOFFICE_AI_OPENAI_BASE_URL controls the OpenAI API base address
• Base addresses must begin with http:// or https://
• Restart LibreOffice after changing any setting

How to Use the Extension

After installation and configuration, open a Writer document and select the text you want to process. Right-click the selection, choose AI Assistant, and select Correct, Rewrite or Summarize. The extension displays the generated result for confirmation before replacing the selected text.

• Open a LibreOffice Writer document
• Select a non-empty section of text
• Right-click the selected text
• Open the AI Assistant submenu
• Choose Correct, Rewrite or Summarize
• Review the generated result
• Confirm the replacement or cancel it

Supported Features