core

Injects context of all relevant cli files.

Command for 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 commands/google-gemini/gemini-cli/core
Clone the repo
git clone --depth 1 https://github.com/google-gemini/gemini-cli

Made for: Gemini CLI.

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 343 The whole file, excluding the scripts and references it only reads on demand.
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 $0.00000 $0.00343
Opus 5 $0.00000 $0.00171
Sonnet 5 $0.00000 $0.00069
Haiku 4.5 $0.00000 $0.00034

Measured today against content hash 7d0f430eae75, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

core 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 today.

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.

.gemini/commands/core.toml · 30 lines

What it actually says

description="Injects context of all relevant cli files" prompt = """ The following output contains the complete source code of packages/core. Pay extremely close attention to these files. They define the project's core architecture, component patterns, and testing standards.

The source code contains the content of absolutely every source code file in packages/core. You should very rarely need to read any other files from packages/core to resolve prompts.

!{find packages/core \( -path packages/cli/dist -o -path packages/core/dist -o -name node_modules \) -prune -o -type f \( -name ".ts" -o -name ".tsx" \) ! -name ".test.ts" ! -name ".test.tsx" ! -name "*.d.ts" -exec echo "--- {} ---" \; -exec cat {} \;}

In addition to the code context, you MUST strictly adhere to the following frontend-specific development guidelines when writing code in packages/core.

Configuration & Settings

  • Settings vs Args: Use settings for user-configurable options; do not add new CLI arguments.
  • Schema: Add new settings to packages/cli/src/config/settingsSchema.ts.
  • Documentation:
    • If showInDialog: true, document in docs/get-started/configuration.md.
    • Ensure requiresRestart is correctly set.

General

  • Logging: Use debugLogger for errors. NEVER leave console.log/warn/error in the code.
  • TypeScript: Avoid the non-null assertion operator (!).

{{args}}. """

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. today First seen · 30 lines · 0 tokens per session scan A 7d0f430eae75

Subscribe to this mod's changes

core is a command published in the GitHub repository google-gemini/gemini-cli (106,761 stars, last pushed today), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 343 tokens. 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 2026-09-02.