A Tutorial on Creating Custom Gemini Gems for Workflow Automation

Published on 02.12.2025

☕🤖 Tutorial: How To Save Hours Every Week With Custom Gemini Gems

TLDR: This tutorial provides a step-by-step guide to creating custom "Gems" within Google's Gemini. By defining a persona, task, context, and format, and uploading relevant knowledge files, you can build specialized AI assistants to automate repetitive and time-consuming workflows.

Summary: The article offers a practical solution for anyone looking to reclaim time from monotonous weekly tasks. The authors introduce Gemini Gems, which are custom AI assistants you can build directly inside Gemini. These Gems are designed to act as mini-experts, trained on your specific instructions and documents, to perfectly repeat tasks on demand. The core idea is to identify your most dreaded repetitive task and build a Gem to handle it, thereby saving significant time and mental energy.

The tutorial outlines a clear, structured process for creating a new Gem. It starts with opening the "Gem Manager" in Gemini and providing a name and a set of instructions. The authors recommend a four-part instruction structure: Persona (defining the Gem's role and tone), Task (what it needs to do), Context (the rules and information it should use), and Format (how the output should be structured). To enhance the Gem's expertise, users can upload relevant files like pricing sheets, case studies, or value propositions under the "Add knowledge" section. This gives the Gem a persistent knowledge base to draw from, ensuring its responses are accurate and contextually aware.

To make the concept concrete, the article provides a copy-and-paste example for building a Gem that acts as a Sales Development Representative (SDR). The persona is defined as a persuasive but respectful SDR, the task is to draft personalized follow-up emails, the context is to use only verified product details, and the format is a 120-word email with a clear subject, intro, and call-to-action. The example also suggests uploading files like a pricing overview and case studies. This hands-on example demonstrates how a well-defined Gem can automate a common business task with precision.

For technical teams and individual developers, this tutorial is a gateway to powerful workflow automation. While the example is sales-focused, the underlying framework can be adapted to countless technical tasks: generating boilerplate code, drafting documentation, summarizing technical reports, or creating test plans. By defining a "coder" persona, providing coding standards as context, and uploading API documentation, a team could create a Gem to assist with common development tasks. This approach to building custom AI assistants represents a shift from general-purpose chatbots to specialized, context-aware tools that can be tailored to the unique needs of any workflow, making them a powerful force for productivity.

Key takeaways:

  • Gemini Gems are custom AI assistants you can build to automate repetitive tasks.
  • A successful Gem is built on a clear four-part instruction set: Persona, Task, Context, and Format.
  • You can upload files to provide a persistent knowledge base for your Gem, making it a specialized expert.
  • The process allows you to turn your most time-consuming tasks into automated workflows.
  • This framework can be adapted from business use cases to technical ones, such as code generation or documentation.

Link: ☕🤖 Tutorial: How To Save Hours Every Week With Custom Gemini Gems