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.
npx agentmods add agents/marcinbunsch/overseer/gemini-cligit clone --depth 1 https://github.com/marcinbunsch/overseerWhat 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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00000 | $0.04149 |
| Opus 5 | $0.00000 | $0.02074 |
| Sonnet 5 | $0.00000 | $0.00830 |
| Haiku 4.5 | $0.00000 | $0.00415 |
Grade B, and why
gemini-cli scanned grade B with 1 finding 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.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
Stored in `~/.gemini/settings.json` (global) or `.gemini/settings.json` (project-scoped). How it starts
The opening of the file, as written. The whole thing — 523 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Gemini CLI
Gemini CLI is an open-source AI coding agent from Google that brings Gemini directly into the terminal. It uses a ReAct (reason and act) loop with built-in tools and MCP servers to complete tasks. For GUI integrations, Gemini CLI supports a headless non-interactive mode with structured JSON output over stdout.
Quick Start
Installation
# npm (recommended)
npm install -g @google/gemini-cli
# Or run directly with npx
npx @google/gemini-cli
Requires Node.js 20+.
Authentication
# API key (simplest)
export GEMINI_API_KEY=your-api-key
# Google Cloud credentials
export GOOGLE_APPLICATION_CREDENTIALS=/path/to/service-account.json
# Google Cloud project (for Vertex AI)
export GOOGLE_CLOUD_PROJECT=your-project-id
export GOOGLE_CLOUD_LOCATION=us-central1
Also supports:
- API Key:
GEMINI_API_KEYorGOOGLE_API_KEYenvironment variable - Google Cloud: Service account via
GOOGLE_APPLICATION_CREDENTIALS - Vertex AI:
GOOGLE_CLOUD_PROJECT+GOOGLE_CLOUD_LOCATION
Platform Support
- macOS & Linux — fully supported
- Windows — via WSL
CLI Commands
Interactive Mode
gemini # Launch interactive TUI
gemini -i "Tell me about this project" # Interactive with initial prompt
gemini -m gemini-2.5-pro # Override model
Non-Interactive (Headless) Mode
gemini -p "Fix the login bug" # Single prompt, exits after
gemini -p "Explain this code" --output-format json # Structured JSON output
gemini -p "Refactor auth" --output-format stream-json # NDJSON streaming events
echo "Summarize this" | gemini # Pipe input via stdin
cat README.md | gemini -p "Summarize this documentation" # Combined file + prompt
Session Management
gemini --resume # Resume most recent session
gemini --resume 1 # Resume by index
gemini --resume <session-uuid> # Resume specific session by UUID
gemini --list-sessions # List available sessions
gemini --delete-session <id> # Delete a session
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.
- 2d ago First seen · 523 lines · 0 tokens per session scan B bbcacaaceada
gemini-cli is an agent published in the GitHub repository marcinbunsch/overseer (11 stars, last pushed 2d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 4,149 tokens. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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