agentmods.dev

gemini-cli GEMINI.md

Project instructions for developing Gemini CLI, an open-source terminal application that connects developers with Gemini AI models. They describe its code structure, tools, testing, and development conventions.

In plain words
What is it for?
Use them when building, testing, formatting, or changing Gemini CLI, including its monorepo, which is one repository containing multiple related packages.
Why use it?
They give an agent the project context needed to make changes that fit the existing codebase.

Instructions file for Gemini CLI

107k +12 today A scan 1,140 tokens original Apache-2.0
View the source file google-gemini/gemini-cli
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add instructions/google-gemini/gemini-cli/gemini-md
Clone the repo
git clone --depth 1 https://github.com/google-gemini/gemini-cli

Made for: Gemini CLI.

Per session 1,140 This file is loaded in full into every session.
When invoked 1,140 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.01140 $0.01140
Opus 5 $0.00570 $0.00570
Sonnet 5 $0.00228 $0.00228
Haiku 4.5 $0.00114 $0.00114

Measured 2d ago against content hash 74dab8e16a1a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

gemini-cli GEMINI.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

GEMINI.md · 97 lines

How it starts

The opening of the file, as written. The whole thing — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Gemini CLI Project Context

Gemini CLI is an open-source AI agent that brings the power of Gemini directly into the terminal. It is designed to be a terminal-first, extensible, and powerful tool for developers.

Project Overview

  • Purpose: Provide a seamless terminal interface for Gemini models, supporting code understanding, generation, automation, and integration via MCP (Model Context Protocol).
  • Main Technologies:
    • Runtime: Node.js (>=20.0.0, recommended ~20.19.0 for development)
    • Language: TypeScript
    • UI Framework: React (using Ink for CLI rendering)
    • Testing: Vitest
    • Bundling: esbuild
    • Linting/Formatting: ESLint, Prettier
  • Architecture: Monorepo structure using npm workspaces.
    • packages/cli: User-facing terminal UI, input processing, and display rendering.
    • packages/core: Backend logic, Gemini API orchestration, prompt construction, and tool execution.
    • packages/a2a-server: Experimental Agent-to-Agent server.
    • packages/sdk: Programmatic SDK for embedding Gemini CLI capabilities.
    • packages/devtools: Integrated developer tools (Network/Console inspector).
    • packages/test-utils: Shared test utilities and test rig.
    • packages/vscode-ide-companion: VS Code extension pairing with the CLI.

Building and Running

  • Install Dependencies: npm install
  • Build All: npm run build:all (Builds packages, sandbox, and VS Code companion)
  • Build Packages: npm run build
  • Run in Development: npm run start
  • Run in Debug Mode: npm run debug (Enables Node.js inspector)
  • Bundle Project: npm run bundle
  • Clean Artifacts: npm run clean

Testing and Quality

  • Test Commands:
    • Unit (All): npm run test
    • Integration (E2E): npm run test:e2e

    • NOTE: Please run the memory and perf tests locally only if you are implementing changes related to those test areas. Otherwise skip these tests locally and rely on CI to run them on nightly builds.

    • Memory (Nightly): npm run test:memory (Runs memory regression tests against baselines. Excluded from preflight, run nightly.)
    • Performance (Nightly): npm run test:perf (Runs CPU performance regression tests against baselines. Excluded from preflight, run nightly.)
    • Workspace-Specific: npm test -w <pkg> -- <path> (Note: <path> must be relative to the workspace root, e.g., -w @google/gemini-cli-core -- src/routing/modelRouterService.test.ts)
  • Full Validation: npm run preflight (Heaviest check; runs clean, install, build, lint, type check, and tests. Recommended before submitting PRs. Due to its long runtime, only run this at the very end of a code implementation task. If it fails, use faster, targeted commands (e.g., npm run test, npm run lint, or workspace-specific tests) to iterate on fixes before re-running preflight. For simple, non-code changes like documentation or prompting updates, skip preflight at the end of the task and wait for PR validation.)
  • Individual Checks: npm run lint / npm run format / npm run typecheck

Read the full file on GitHub · 97 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 97 lines · 1,140 tokens per session scan A 74dab8e16a1a

Subscribe to this mod's changes

gemini-cli GEMINI.md is an instructions file published in the GitHub repository google-gemini/gemini-cli (106,761 stars, last pushed today), licensed Apache-2.0. It adds 1,140 tokens to every session, about $0.0057 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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