What is terminalAgent GEMINI.md?

Project instructions for a terminal-based coding assistant called Terminal Coding Agent. They describe its Node.js and TypeScript setup, its use of the Claude Agent SDK, and its Markdown-based skills system.

Use them when working on the Terminal Coding Agent's source code, command-line entry point, SDK integration, or skill-loading system. The excerpt does not provide more specific tasks.

They give the coding assistant the project context needed to understand the architecture and use the repository's conventions. This avoids making changes without knowing how the command-line tool and its skills are organized.

How 21pounder/terminalAgent configures Gemini CLI

Reuse

Borrowing it

Nothing to install: this file belongs to 21pounder/terminalAgent. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/21pounder/terminalAgent/main/GEMINI.md

Clone the repo

git clone --depth 1 https://github.com/21pounder/terminalAgent

Made for: Gemini CLI.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/21pounder/terminalagent/gemini-md/github.svg)](https://agentmods.dev/instructions/21pounder/terminalagent/gemini-md)

Your own site

<a href="https://agentmods.dev/instructions/21pounder/terminalagent/gemini-md"><img src="https://agentmods.dev/badge/instructions/21pounder/terminalagent/gemini-md/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/21pounder/terminalagent/gemini-md"><img src="https://agentmods.dev/badge/instructions/21pounder/terminalagent/gemini-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 768 This file is loaded in full into every session.

When invoked 768 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00768	$0.00768
Opus 5.5	$0.00307	$0.00307
Sonnet 5.5	$0.00154	$0.00154
Haiku 4.5	$0.00077	$0.00077

Measured 2mo ago against content hash 9aa1782b90a2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

terminalAgent 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 2mo 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.

GEMINI.md · 75 lines

How it starts

The opening of the file, as written. The whole thing — 75 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Terminal Coding Agent (Gemini Context)

This document provides context for the Gemini AI agent to understand and interact with the Terminal Coding Agent project.

Project Overview

Name: Terminal Coding Agent Version: 5.0.0 Purpose: A terminal coding assistant powered directly by the official Claude Agent SDK. It enables natural language coding tasks and supports custom "Skills" defined via Markdown. Core Technology:

Runtime: Node.js (TypeScript).
Engine: @anthropic-ai/claude-agent-sdk.
Skill System: Doc-based skills (Markdown definitions in .claude/skills/).

Architecture & Design

This version (v5) moves away from custom tool loops and raw API calls, fully embracing the official SDK.

Key Components

src/index.ts: The CLI entry point.
- Initializes the SDK query() function.
- Handles "Smart Input" (files references with @, command completion).
- Dynamically loads skills from .claude/skills directories.
Skills System (.claude/skills/):
- Skills are defined as directories containing a SKILL.md file.
- The SDK reads these definitions and injects them as capabilities into the agent context.
- This allows for "Low-Code" skill creation (Prompt Engineering vs. Coding).
UI (src/ui/):
- Custom TUI components for input, banners, and message formatting.

Usage

Interaction Modes

Natural Language:
- "Refactor src/index.ts to use a class."
- "Explain the authentication logic."
Skill Invocation:
- Slash commands (e.g., /deep-research, /code-migrate) are routed to the specific skill defined in .claude/skills/.
- The agent uses the prompt instructions in SKILL.md to execute the task.
File Context:
- Use @filename to explicitly attach files to the context (e.g., "Fix the bug in src/utils.ts").

Directory Structure

deepresearch/
- .claude/skills/: (User-defined) Collection of skill directories (e.g., code-migrate/SKILL.md).
- src/
  - index.ts: Main logic and SDK integration.
  - ui/: UI components.
- bin/: Executable entry points.

Read the full file on GitHub · 75 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.

2mo ago First seen · 75 lines · 768 tokens per session scan A 9aa1782b90a2

Subscribe to this mod's changes

terminalAgent GEMINI.md is an instructions file published in the GitHub repository 21pounder/terminalAgent (116 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 768 tokens to every session, about $0.0031 per session on Opus 5.5. 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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terminalAgent: Instructions file for Gemini CLI