🤖 AI-powered Gmail assistant that automatically analyzes emails and drafts responses using Google’s Gemini AI
Google is rapidly integrating Gemini across the Workspace platform, bringing powerful AI features directly into the tools we use every day. While these native integrations offer incredible value, developer-led solutions provide a tantalising glimpse into the future of hyper-personalised automation, especially as we look toward the potential of the new Google Workspace Flows. This is where the real magic begins, allowing for custom agents that can handle complex, multi-step tasks.
Google Developer Advocate Zack Akil has created one such example solution that turns your Gmail inbox into a smart, automated assistant. His open-source project, the “AI-got-this-gmail-delegator,” is a Google Apps Script that uses the Gemini API to analyse incoming emails, categorise them, and even draft replies based on your own knowledge and writing style.
This project is a great example of how to combine the power of Google Workspace automation with the intelligence of modern AI. The script works by:
Analysing Incoming Emails:Â When a new email arrives, the script sends the content to the Gemini API for analysis.
Providing Context:Â The AI’s analysis is guided by a “knowledge base” that you provide in a Google Doc. This could include your role, common responses, or specific project details.
Intelligent Triage:Â Based on the email’s content and your knowledge base, the script decides whether the email needs a reply, requires manual intervention, or can be archived.
Drafting Replies:Â For emails that need a response, the script uses Gemini to generate a draft reply in your own writing style, ready for you to review and send.
The entire process is logged in a Google Sheet, giving you a complete overview of your AI assistant’s activity.
What makes this project so compelling is its practicality and customisability. By modifying the Google Doc knowledge base and the writing style prompts, you can create a personalised email assistant that understands the nuances of your work.
To explore the code and set up your own AI email delegator, check out the project on GitHub.
This article explores the integration of the Gemini Command-Line Interface (CLI) with Google Sheets using the Model Context Protocol (MCP). It demonstrates how to leverage the open-source projects MCPApp and ToolsForMCPServer to create a bridge between the Gemini CLI and Google Workspace. This enables users to perform powerful data automation tasks, such as creating, reading, and modifying tables in Google Sheets directly from the command line, using natural language prompts. The article provides practical examples and sample prompts to illustrate the seamless workflow and potential for building sophisticated, AI-powered applications within the Google Cloud ecosystem.
For developers who work in the command line, the introduction of Google’s Gemini Command-Line Interface (CLI) has opened up new ways to interact with AI. The open-source tool allows you to bring the power of Gemini models directly into your terminal, making it a useful companion for coding assistance, content generation, and task automation. While the CLI can interact with your local file system and the internet, its standard capabilities don’t provide a direct path to your personal data within Google Workspace.
But what if you could extend it? What if you could create a secure connection, allowing the Gemini CLI to interact with your own files in Drive, events in Calendar, or emails in Gmail?
Over the past month, Google Workspace Developer Expert Kanshi Tanaike has published an insightful series of blog posts that provides a practical blueprint for achieving just that. In this series, he demonstrates how to use the flexibility of Google Apps Script to create a powerful, personalised bridge between the Gemini CLI and the entire suite of Google Workspace services.
At the centre of Kanshi’s solution is a simple and effective architecture. He shows readers how to build a Model Context Protocol (MCP) server using a Google Apps Script project deployed as a Web App. This server acts as the secure intermediary between the Gemini CLI and your Google account.
The key advantage of this approach lies in its security and simplicity. By using Apps Script, the complex and critical OAuth2 authorisation is handled natively within the Google ecosystem. This means developers can create a robust tool without the overhead of managing credentials or setting up separate cloud infrastructure.
Throughout the series, Kanshi doesn’t just provide the theory; he delivers the tools to make it happen. He has developed and shared two key open-source Apps Script libraries, MCPApp and ToolsForMCPServer, which significantly simplify the process. These libraries provide a ready-to-use framework and a rich set of functions for interacting with Workspace services.
The result is a system capable of executing complex, multi-step automations from a single, natural-language prompt. The examples in his posts speak for themselves:
Automated Data Entry:Â Fetching a multi-day weather forecast and populating it directly into a Google Sheet.
Content Creation:Â Uploading a local PDF to Drive, generating a summary, creating a new Google Slides presentation from that summary, and emailing it to a colleague.
Interactive Tasks:Â Generating a custom survey in Google Forms and sending out the link via Gmail.
This extensibility is what sets the approach apart. While a standard tool like the Gemini App (gemini.google.com) provides a familiar conversational interface, it offers a fixed set of features. This CLI-based method allows developers to keep that same intuitive, conversational style of interaction but makes it completely extensible. With the CLI and a custom MCP server, developers are no longer limited—they can build bespoke tools to solve their specific challenges.
For example, a common request from Workspace users is the ability to generate an entire presentation from source material. Using this framework, a developer could easily build a custom tool to do just that, triggered by a single command.
This series is a great example of the innovation happening within the Google Workspace developer community. While this command-line approach is naturally suited for developers and power users comfortable with scripting, it offers a level of control and automation that is difficult to achieve through graphical interfaces. It provides a clear, powerful, and extensible pattern for anyone in this group looking to explore their own sophisticated AI-powered automations.
We highly recommend diving into the series to see what’s possible. You can start with the most recent post, which links back to the previous articles in the series:
We’re very excited to announce that Gemini in AppSheet Solutions is now Generally Available (GA)! This powerful capability allows AppSheet Enterprise Plus users to integrate Google’s Gemini directly into their automation workflows.
Following our previous post announcing the public preview, we are excited to share that Gemini in AppSheet Solutions is now generally available (GA) for all AppSheet Enterprise Plus users. This update allows creators to directly integrate Google’s Gemini models into their automation workflows, making AI-powered automation more accessible than ever.
What This Means for Creators
This move to general availability solidifies the simplified AI integration within AppSheet. Instead of complex setups involving API keys and external scripts, creators can now use a native “AI Task” step within their AppSheet automations. This new task can handle jobs like extracting specific data from uploaded photos or PDFs, and categorising text directly within AppSheet.
The GA release also brings enhanced confidence in building AI-powered solutions. The in-editor task testing feature allows creators to test and refine AI prompts and configurations with sample data before deployment. This is a crucial step for ensuring reliable AI, and it allows for much quicker iteration.
For administrators, the AppSheet admin dashboard now provides visibility into Gemini usage within the organisation, and allows for control over which creators can use these new features.
Key updates since Public Preview
For creators, the GA release includes a number of improvements:
AI tasks now support more column types, including REF types, allowing you to use information in linked tables.
The quality of AI responses has been improved for certain data types.
For admins, the AppSheet admin console now shows your organisation’s credit entitlement and consumption, providing insights into how your users and applications are using Gemini.
The Power of the Underlying Model
It’s also worth noting that the underlying Gemini models are market leaders and are continuously improving. New tools on the horizon, such as ‘URL context’ and the ability to also ground results with Google Search, will hopefully filter through to AI Tasks in AppSheet enabling creators to build even more powerful solutions. These advancements will allow for the creation of sophisticated AI assistants that can use real-time information, all without the need for fine-tuned models or complex custom integrations.
Getting Started: Example Template
The announcement post includes links to the relevant documentation for creators and admins. For those looking for a practical example, the AppSheet team has provided a “Book tracking with Gemini” template. This app showcases how you can upload a picture of a book cover, and then use two different AI tasks to automatically extract book-related information and categorise it by genre. I found this to be an excellent starting point for understanding how to implement these new features in your own projects.
Nine years ago, I wrote an article describing how to scrape data from the internet in about five minutes. It featured a Google Apps Script library that allowed you to specify what to download from a webpage by identifying the text surrounding your target information. This became one of my most-read articles, and the library itself saved me a significant amount of time.
With the advent of large language models like Gemini, this entire paradigm is shifting. Just as “vibe coding” describes a more intuitive approach to programming, I’d say we’re now entering an era of “vibe-scraping.”
Using data from the web has long been a staple. But what if you could just describe the information you want and have an AI fetch it for you?
Google Developer Expert, Ivan Kutil, introduces a modern approach he calls “vibe scraping.” In his latest post, he demonstrates a powerful method that combines Google Apps Script with the Gemini API to pull structured data from any webpage directly into a Google Sheet.
A Practical Example: From Movie Links to a Full Database
To understand the power of this technique, Ivan set out to solve an old problem. He had a Google Sheet with a list of movies, each with a URL pointing to its page on ČSFD (a popular Czech-Slovak film database). His goal was to automatically populate columns with details like genre and rating by extracting the data directly from those linked pages.
At the heart of his solution is a new, experimental Gemini API feature called the URL Context tool. As the documentation notes, this tool is surprisingly flexible: it “can then retrieve content from the URLs and use that content to inform and shape its response.”
The tool can be used in two main ways:
URL Context “By Itself”:Â In this mode, the tool directly fetches and processes the content from the URL you provide. This is a straightforward way to analyze the live content of a single page.
URL Context with Google Search Grounding:Â In this mode, the tool can read content from a URL and then use Google Search for a more in-depth understanding.
What makes Ivan’s script so elegant is how it combines this tool with the simplicity of Google Sheets. For each row, the script constructs a prompt for the Gemini API, asking it to analyse the content of the provided URL and find the specific information defined in the spreadsheet headers.
The result is a system where modifying your data query is as easy as renaming a column. This turns a potentially complex scraping task into a simple spreadsheet edit, allowing anyone to create powerful, custom data importers.
To get the full details and the code to build this yourself, check out Ivan’s original post.
The landscape of what’s possible within the browser is quietly undergoing a significant shift, and for Google Workspace Add-on developers, this could be a game-changer. Chrome’s AI mission is simple yet powerful: to ‘make Chrome and the web smarter for all developers and all users.’ We’re seeing this vision begin to take shape with the emergence of experimental, built-in AI APIs in Google Chrome, designed to bring powerful capabilities using models like Gemini Nano directly to the user’s device.
There is a growing suite of these on-device APIs. This includes the versatile Prompt API, specialised Writing Assistance APIs (like Summarizer, Writer, and Rewriter), Translation APIs (Language Detector and Translator), and even a newly introduced Proofreader API. For many existing Workspace Add-on developers, some of the more task-specific APIs could offer a relatively straightforward way to integrate AI-powered enhancements.
However, my focus for this exploration, and the core of the accompanying demo Add-on being introduced here, is the Prompt API. What makes this API particularly compelling for me is its direct line to Gemini Nano, a model that runs locally, right within the user’s Chrome browser. This on-device approach means that, unlike solutions requiring calls to external third-party GenAI services, interactions can happen entirely client-side. The Prompt API provides web applications, including Google Workspace Editor Add-ons, with an open-ended way to harness this local AI for text-based generative tasks.
To put the Prompt API’s text processing abilities through its paces in a practical Workspace context, I’ve developed a Google Workspace Add-on focused on text-to-diagram generation. This post delves into this demonstration and discusses what on-device AI, through the versatile Prompt API, could mean for the future of Workspace Add-on development, including its emerging multimodal potential.
Why This Matters: New Horizons for Google Workspace Developers
Using an on-device LLM like Gemini Nano offers several key benefits for Workspace Add-on developers:
Enhanced Data Privacy & Simplified Governance:Sensitive user data doesn’t need to leave the browser, meaning no external API calls are made to third-party servers for the AI processing itself, which is a huge plus for privacy and can simplify data governance including Google Workspace Marketplace verification and Add-on data privacy policies.
Potential for Cost-Free GenAI (with caveats!): Client-side processing can reduce or eliminate server-side AI costs for certain tasks. Remember, “Nano” is smaller than its cloud counterparts, so it’s best for well-scoped features. This smaller size means developers should think carefully about their implementation, particularly around prompt design to achieve the desired accuracy, as the model’s capacity for understanding extremely broad or complex instructions without guidance will differ from larger models.
Improved User Experience & Offline Access:Expect faster interactions due to minimise network latency.
The biggest takeaway here is the opportunity to explore new avenues for GenAI capabilities in your Add-ons, albeit with the understanding that this is experimental territory and on-device models have different characteristics and capacities compared to larger, cloud-based models.
Proof of Concept: AI-Powered Text-to-Diagram Add-on
To showcase the tangible possibilities of on-device text processing, the demonstrator Add-on (available in the Nano-Prompt-AI-Demo GitHub repository) focuses on a text-to-diagram use case:
Users can describe a diagram in natural language (e.g., “flowchart for a login process”).
The Add-on then uses the Gemini Nano API via the Prompt API to convert this text description into MermaidJS diagram code.
It also allows users to directly edit the generated MermaidJS code, see a live preview, and utilise an AI-powered “Fix Diagram” feature if the code has errors.
Finally, the generated diagram can be inserted as a PNG image into their Google Workspace file.
Nano Prompt API Demo
This example illustrates how the Prompt API can be used for practical tasks within a Google Workspace environment.
Under the Bonnet: Utilising the Chrome Gemini Nano Prompt API for Text
The Add-on interacts with Gemini Nano via client-side JavaScript using the LanguageModel object in the Sidebar.html file. I should also highlight that all of the Sidebar.html code was written by the Gemini 2.5 Pro model in gemini.google.com, with my guidance which included providing the appropriate developer documentation and this explainer for the Prompt API.
The Add-on’s core logic for text-to-diagram generation includes:
Session Creation and Prompt Design for Gemini Nano:A LanguageModel session is created using LanguageModel.create().
Generating Diagrams from Text: The user’s natural language description is sent to the AI via session.prompt(textDescription).
AI-Powered Code Fixing: If the generated or manually entered MermaidJS code has errors, the faulty code along with the error message is sent back to the model for attempted correction.
Given that Gemini Nano is, as its name suggests, a smaller LLM, careful prompt design is key to achieving optimal results. In this demonstrator Add-on, for instance, the initialPrompts (system prompt) play a crucial role. It not only instructs the AI to act as a MermaidJS expert and to output onlyraw MermaidJS markdown, but it also includes two explicit examples of MermaidJS code within those instructions.
Providing such “few-shot” examples within the system prompt was found to significantly improve the reliability and accuracy of the generated diagram code from text descriptions. This technique helps guide the smaller model effectively.
Navigating Experimental Waters: Important Considerations (and Reassurances)
It’s important to reiterate that the majority of AI APIs are still experimental. Functionality can change, and specific Chrome versions and flags are often required. I recommend referring to official Chrome AI Documentation and Joining the Early Preview Program for the latest details and updates.
Before you go updating your popular production Google Workspace Add-ons developers should be aware of the current system prerequisites. As of this writing, these include:
Operating System: Windows 10 or 11; macOS 13+ (Ventura and onwards); or Linux.
Storage: At least 22 GB of free space on the volume that contains your Chrome profile is necessary for the model download.
GPU: A dedicated GPU with strictly more than 4 GB of VRAM is often a requirement for performant on-device model execution.
Currently, APIs backed by Gemini Nano do not yet support Chrome for Android, iOS, or ChromeOS. For Workspace Add-on developers, the lack of ChromeOS support is a significant consideration.
However, Google announced at I/O 2025 in the ‘Practical built-in AI with Gemini Nano in Chrome’ session that the text-only Prompt API, powered by Gemini Nano, is generally available for Chrome Extensions starting in Chrome 138. While general web page use of the Prompt API remains experimental this move hopefully signals a clear trajectory from experiment to production-ready capabilities.
Bridging the Gap: The Hybrid SDK
To address device compatibility across the ecosystem, Google has announced a Hybrid SDK. This upcoming extension to the Firebase Web SDK aims to use built-in APIs locally when available and fall back to server-side Gemini otherwise, with a developer preview planned (see https://goo.gle/hybrid-sdk-developer-preview for more information). This initiative should provide a more consistent development experience and wider reach for AI-powered features.
A Glimpse into the Future: Empowering Workspace Innovation
On-device AI opens new opportunities for privacy-centric, responsive, and cost-effective Add-on features. While the demonstrator Add-on focuses on text generation, the Prompt API and the broader suite of on-device AI tools in Chrome offer much more for developers to explore
Focusing on Unique Value for Workspace Add-ons
It’s important for developers to consider how these on-device AI capabilities—be it advanced text processing or new multimodal interactions which support audio and image inputs from Chrome 138 Canary—can be used to extend and enhance user experience in novel ways, rather than replicating core Gemini for Google Workspace features. The power lies in creating unique, value-added functionalities that complement native Workspace features.
Explore, Experiment, and Provide Feedback!
This journey into on-device AI is a collaborative one and Google Workspace developers have an opportunity to help shape on-device AI.
Try It Out: Follow setup instructions to experience on-device AI with the demo, and consider exploring multimodal capabilities for your own projects by referring to the latest Early Preview Program updates.
Provide Feedback: Share your experiences either about the example add-on or through the Early Preview Program.
I hope you have as much fun working with these APIs as I have and look forward to hearing how you get on. Happy Scripting!
Exploring Agent2Agent (A2A) protocol implementation in Google Apps Script seamlessly allows AI agents to access Google Workspace data and functions. This could enable complex workflows and automation, overcoming platform silos for integrated AI applications.
The buzz around AI and collaborative agent systems is growing, and with it, the need for standardized communication. The recently introduced Agent2Agent (A2A) protocol aims to enable exactly that – allowing different AI agents, regardless of their underlying framework, to discover each other’s capabilities and work together. But how can the Google Workspace developer community tap into this exciting new frontier?
Enter prolific Apps Script contributor Kanshi Tanaike, who has once again provided a valuable resource for the community. Kanshi has published a detailed guide and a Google Apps Script library demonstrating how to build an Agent2Agent (A2A) server using Google Apps Script.
Why is this significant?
Kanshi’s work explores the feasibility of implementing a core A2A server component directly within the Google Workspace ecosystem. As Kanshi notes, “Such an implementation could seamlessly allow AI agents to securely access and utilize data and functionalities across Google services like Docs, Sheets, and Gmail via a standardized protocol.”. This opens up possibilities for:
Integrating AI agents with your Google Workspace data:Â Imagine AI agents that can directly interact with your Sheets, Docs, Drive files, or Gmail.
Building sophisticated AI-powered workflows:Â Automate complex tasks that span across different services, orchestrated by communicating AI agents.
Kanshi’s guide walks through the setup and implementing functions that allow AI agents to interact with Google Workspace services like Drive or external APIs via UrlFetchApp. This work significantly lowers the barrier to entry for Google Workspace developers looking to experiment with and implement A2A-compatible agents and as such I highly encourage you to check out the linked source post for the complete guide, code, and library details.
Last week at Google Cloud Next ’25 was packed with announcements, but one that particularly grabbed my attention was the unveiling of Google Workspace Flows. As Google Apps Script developers, many of us are familiar with automating simple tasks. However, the Flows demo hinted at a more accessible approach for tackling complex business processes.
Think about those workflows that go beyond basic if-this-then-that and into a world where you can easily configure Gemini to be your virtual assistant. Updating specific spreadsheet entries based on nuanced analysis, or finding and summarising information scattered across different files before replying to a customer. Traditional automation often hits a wall here because these tasks require context, reasoning, and sometimes even creative generation – capabilities standard automation tools lack.
Workspace Flows: AI Agents Joining the Workflow
What Google presented with Flows is a new solution for Google Workspace designed to automate these kinds of multi-step processes with AI providing assistance. Instead of just triggering actions, Flows uses AI models, including Gemini, as agents within the loop. This means the AI isn’t just kicking off a process; it’s actively participating – researching, analysing, creating, and reasoning to help get work done more efficiently and intelligently.
Having used tools like IFTTT it feels like a conceptual shift from simple automation to building intelligent, agentic workflows directly within the Workspace environment, without writing a single line of code.
Why Flows Looks Interesting for Developers: Current Capabilities and Future Vision
Beyond the core AI capabilities shown in the demo, Google outlined a vision for Flows that is particularly relevant for developers, indicating where the platform is heading:
No-Code/Low-Code Interface (Current): The initial preview allows configuring triggers (like new emails, form responses, etc.) and actions across core Workspace apps and integrating Gemini and Gems for AI-driven steps, removing the need to find alternative solutions (code you write or third party solutions).
Apps Script Extensibility (Future Vision): Google announced plans to allow developers to build their own custom triggers and actions using Apps Script. This creates the opportunity to integrate your own systems or add specific logic to get more out of Flows. The presentation briefly showed an example appsscript.json manifest snippet for declaring these elements around 13:08).
Workspace Connectors Platform (Future Vision): A dedicated platform for third-party integrations was also announced in the presentation as part of the roadmap. The plan is to enable connections to tools like Jira, Asana, Salesforce, HubSpot, etc., allowing them to be used as triggers or actions. The stated goal is to include the ability to build end-to-end workflows spanning beyond Google Workspace, with connectors built once potentially working in both Flows and Gemini Extensions.
Bring Your Own Models via Vertex AI (Future Vision): For advanced AI needs, Google shared the vision for integrating your own custom or fine-tuned models hosted on Google Cloud’s Vertex AI. The concept shown involved an ‘Ask an LLM’ step where you could select a ‘Custom Model’ directly within the flow builder, pointing towards future capabilities for incorporating highly specialized AI into Workspace automations.
Looking Ahead
Google Workspace Flows is definitely a platform I’ll be watching closely. The initial preview, focusing on AI agents-in-the-loop and core Workspace automation, is already compelling. But the announced roadmap for developer extensibility – adding Apps Script support, a robust connector platform, and the ability to call custom Vertex AI models – is what makes Flows truly exciting from a development perspective.
Flows is currently in alpha with its initial feature set. If this vision sounds as interesting to you as it did to me, you can sign up for the early access waitlist.
Getting started with generative AI in your Google Apps Script projects just got a whole lot easier! Google AI Studio has introduced a handy new feature allowing you to directly export your AI interactions as ready-to-use Apps Script code. If you’re new to Apps Script or integrating AI, this is a fantastic way to quickly add powerful features to your automations. Here’s how you can grab the code:
Click the Get code icon (</>) above the chat prompt.
In the ‘Get code’ window, click the language dropdown (this might initially show ‘Python’).
Select Apps Script from the dropdown list.
Click the Copy button to copy the generated Apps Script code to your clipboard.
If you are using AI Studio with your enterprise data, make sure you’re using a billable account so that your data is protected. This addition is perfect for rapid prototyping and understanding the basic API interaction. However, for applications needing more features essential for production environments, including robust error handling like exponential back-off, then you might want to look at my open source GeminiApp library.
Gemini API now generates images via Flash Experimental and Imagen 3. This report introduces image evolution within conversations using Gemini API with Google Apps Script.
The Gemini API recently gained the ability to generate images. Taking this a step further, Kanshi Tanaike has explored how to create evolving images within a conversation using Google Apps Script.
Often, you might want to generate an image and then iteratively add or modify elements in subsequent steps. Kanshi’s approach cleverly uses the chat functionality of the Gemini API (gemini-2.0-flash-exp model). By sending prompts sequentially within a chat, the API uses the conversation history, allowing each new image to build upon the previous one. This enables the generation of images that evolve step-by-step based on your prompts, as demonstrated in the original post with examples like drawing successive items on a whiteboard.
This technique is particularly useful because, as noted in the post, using chat history provides better results for this kind of sequential image generation compared to generating images from isolated prompts.
Kanshi Tanaike’s original post includes a detailed explanation, setup instructions (including API key usage and library installation ), and complete sample code snippets that you can adapt for your own Google Workspace projects.
