Skip to content

Google's AI coding agent "Jules" adds CLI and API!

Google's Jules Coding Agent Gets CLI & API: Code Smarter, Not Harder

Google's AI coding agent "Jules" now includes CLI and API, further enhancing developer workflows

Hi, I'm Jon. Welcome to this blog, where we cover the latest topics in AI and technology in an easy-to-understand way, even for beginners. Today, I'd like to talk about the latest update to Jules, Google's AI-based coding agent. Jules is a programming tool that recently added a CLI (Command Line Interface) and API, making it even more flexible to use. A CLI is a way to control a computer by entering commands on a keyboard, and an API is an interface for connecting with other software. These features make it easier for developers to streamline their daily work. Let's take a closer look.

Recommended for those who want to start automating with no coding!
With Make.com (formerly Integromat)...
📌 Integrate major tools like email, Slack, Google Sheets, and Notion all at once
📌 Automate complex tasks with just drag and drop
📌 A free plan is also available, so you can try it out for yourself.
If you're interested, here's the details:
What is Make.com (formerly Integromat)? How to Use It, Pricing, Reviews, and Latest Information [2025 Edition]

What is Jules? A useful AI agent that supports programming

Jules is an AI-powered coding agent developed by Google. An agent is an entity that automatically performs tasks, much like a colleague working alongside you. Specifically, it assists with various software development tasks, such as code generation, bug fixes, test creation, and performance improvement. Jules is unique in that it operates asynchronously (it works in the background when instructed in advance), allowing developers to focus on other tasks.

Let's take a look back at the history of this tool. On May 20, 2025, Google released Jules as a public beta, a testing phase for users to try it out and gather feedback. It then ended the beta and was officially released on August 6, 2025. The underlying AI model is Gemini 2.5, Google's advanced language model. During the beta period, thousands of developers processed tens of thousands of tasks, improving Jules' reliability.

For beginners, Jules is an attractive tool that lowers the barrier to programming. For example, even if you're not good at writing code, you can give Jules instructions and it will automatically make suggestions. Incidentally, there is a similar AI tool called Gamma. Gamma is a tool that uses AI to instantly create documents, slides, and websites, making creative work more efficient. For more information,This articleJules is a similar example of AI being useful in development.

Jules' main features and how to use them

Jules works in conjunction with repositories (places where you store and manage code) such as GitHub, allowing you to perform tasks such as:

  • Code generation: Turn your ideas into real code.
  • Bug Fix: Automatically fix program errors.
  • Write tests: Add tests to ensure your code works correctly.
  • Performance improvements: Making the program faster and more efficient.

These features are powered by an AI model called Gemini 2.5, which understands the context of the entire project and works accordingly. If you're new to the technology, we recommend watching the demo video on Google's official blog.

Latest Update: CLI and API Additions for Greater Flexibility

On October 2, 2025, Google announced a new feature for Jules: a CLI called "Jules Tools," as well as an early preview of the Jules API. This makes it possible to use Jules in a wider range of environments. First, let's explain the CLI. The CLI (Command Line Interface) is a tool that allows you to operate Jules from a terminal (a black screen where you enter commands). Installation is easy; just type "npm install -g @google/jules" using npm (the Node.js package manager). This allows developers to start, stop, and check Jules tasks directly from their local folder.

Next is the API (Application Programming Interface). This is an interface for integrating Jules into other systems and workflows, such as CI/CD pipelines (continuous integration/delivery, i.e., a system for automatically testing and deploying code). For example, you can connect to tools like Slack to receive notifications and automate tasks. These updates are based on developer feedback, and we've seen many comments on X (formerly Twitter) saying, "The Jules CLI is so useful!"

Benefits and Use Cases of the New Features

These additions take Jules from being just a web-based tool to being part of a developer's everyday toolchain. Benefits include:

  • CLI advantages: Quickly manage tasks from the terminal. Runs in the background, so it doesn't interfere with other work.
  • API Benefits: Integrate into custom workflows, for example, call Jules in an automation script to request a bug fix.
  • Overall flexibility: In addition to GitHub integration, it offers greater integration with local environments and external tools.

This puts Google ahead in the highly competitive market for AI coding agents, with outlets like TechCrunch reporting that Jules is boosting developer productivity.

Summary: Jules' evolution brings about the future of development

With the addition of a CLI and API, Google's Jules has become a powerful tool that further streamlines developer workflows. As we enter an era where AI is helping with programming, these updates will help beginners and advanced developers alike. If you're interested in AI-powered documentation, check out Gamma's new standard:What is Gamma? A new standard for instantly creating documents, slides, and websites with AI.

Jon's summary: AI agents like Jules lower the barrier to programming and enhance creativity. If you haven't tried them yet, why not start on Google's official page? We'll continue to follow the progress of this technology.

Reference sources

Related posts

tag:

Leave a comment

There is no sure that your email address is published. ■ Required fields are marked