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README.gemini.md
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README.gemini.md
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# Gemini CLI
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[](https://github.com/google-gemini/gemini-cli/actions/workflows/ci.yml)
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This repository contains the Gemini CLI, a command-line AI workflow tool that connects to your
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tools, understands your code and accelerates your workflows.
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With the Gemini CLI you can:
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- Query and edit large codebases in and beyond Gemini's 1M token context window.
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- Generate new apps from PDFs or sketches, using Gemini's multimodal capabilities.
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- Automate operational tasks, like querying pull requests or handling complex rebases.
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- Use tools and MCP servers to connect new capabilities, including [media generation with Imagen,
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Veo or Lyria](https://github.com/GoogleCloudPlatform/vertex-ai-creative-studio/tree/main/experiments/mcp-genmedia)
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- Ground your queries with the [Google Search](https://ai.google.dev/gemini-api/docs/grounding)
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tool, built in to Gemini.
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## Quickstart
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1. **Prerequisites:** Ensure you have [Node.js version 20](https://nodejs.org/en/download) or higher installed.
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2. **Run the CLI:** Execute the following command in your terminal:
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```bash
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npx https://github.com/google-gemini/gemini-cli
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```
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Or install it with:
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```bash
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npm install -g @google/gemini-cli
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```
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Then, run the CLI from anywhere:
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```bash
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gemini
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```
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3. **Pick a color theme**
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4. **Authenticate:** When prompted, sign in with your personal Google account. This will grant you up to 60 model requests per minute and 1,000 model requests per day using Gemini.
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You are now ready to use the Gemini CLI!
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### Use a Gemini API key:
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The Gemini API provides a free tier with [100 requests per day](https://ai.google.dev/gemini-api/docs/rate-limits#free-tier) using Gemini 2.5 Pro, control over which model you use, and access to higher rate limits (with a paid plan):
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1. Generate a key from [Google AI Studio](https://aistudio.google.com/apikey).
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2. Set it as an environment variable in your terminal. Replace `YOUR_API_KEY` with your generated key.
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```bash
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export GEMINI_API_KEY="YOUR_API_KEY"
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```
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3. (Optionally) Upgrade your Gemini API project to a paid plan on the API key page (will automatically unlock [Tier 1 rate limits](https://ai.google.dev/gemini-api/docs/rate-limits#tier-1))
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### Use a Vertex AI API key:
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The Vertex AI API provides a [free tier](https://cloud.google.com/vertex-ai/generative-ai/docs/start/express-mode/overview) using express mode for Gemini 2.5 Pro, control over which model you use, and access to higher rate limits with a billing account:
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1. Generate a key from [Google Cloud](https://cloud.google.com/vertex-ai/generative-ai/docs/start/api-keys).
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2. Set it as an environment variable in your terminal. Replace `YOUR_API_KEY` with your generated key and set GOOGLE_GENAI_USE_VERTEXAI to true
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```bash
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export GOOGLE_API_KEY="YOUR_API_KEY"
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export GOOGLE_GENAI_USE_VERTEXAI=true
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```
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3. (Optionally) Add a billing account on your project to get access to [higher usage limits](https://cloud.google.com/vertex-ai/generative-ai/docs/quotas)
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For other authentication methods, including Google Workspace accounts, see the [authentication](./docs/cli/authentication.md) guide.
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## Examples
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Once the CLI is running, you can start interacting with Gemini from your shell.
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You can start a project from a new directory:
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```sh
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cd new-project/
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gemini
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> Write me a Gemini Discord bot that answers questions using a FAQ.md file I will provide
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```
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Or work with an existing project:
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```sh
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git clone https://github.com/google-gemini/gemini-cli
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cd gemini-cli
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gemini
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> Give me a summary of all of the changes that went in yesterday
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```
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### Next steps
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- Learn how to [contribute to or build from the source](./CONTRIBUTING.md).
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- Explore the available **[CLI Commands](./docs/cli/commands.md)**.
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- If you encounter any issues, review the **[troubleshooting guide](./docs/troubleshooting.md)**.
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- For more comprehensive documentation, see the [full documentation](./docs/index.md).
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- Take a look at some [popular tasks](#popular-tasks) for more inspiration.
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- Check out our **[Official Roadmap](./ROADMAP.md)**
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### Troubleshooting
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Head over to the [troubleshooting guide](docs/troubleshooting.md) if you're
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having issues.
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## Popular tasks
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### Explore a new codebase
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Start by `cd`ing into an existing or newly-cloned repository and running `gemini`.
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```text
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> Describe the main pieces of this system's architecture.
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```
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```text
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> What security mechanisms are in place?
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```
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### Work with your existing code
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```text
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> Implement a first draft for GitHub issue #123.
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```
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```text
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> Help me migrate this codebase to the latest version of Java. Start with a plan.
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```
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### Automate your workflows
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Use MCP servers to integrate your local system tools with your enterprise collaboration suite.
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```text
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> Make me a slide deck showing the git history from the last 7 days, grouped by feature and team member.
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```
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```text
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> Make a full-screen web app for a wall display to show our most interacted-with GitHub issues.
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```
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### Interact with your system
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```text
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> Convert all the images in this directory to png, and rename them to use dates from the exif data.
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```
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```text
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> Organize my PDF invoices by month of expenditure.
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```
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### Uninstall
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Head over to the [Uninstall](docs/Uninstall.md) guide for uninstallation instructions.
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## Terms of Service and Privacy Notice
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For details on the terms of service and privacy notice applicable to your use of Gemini CLI, see the [Terms of Service and Privacy Notice](./docs/tos-privacy.md).
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