terminal-title: Instructions file for Claude Code

CLAUDE.md

terminal-title CLAUDE.md is an instructions file for Claude Code from 2389-research/terminal-title. It costs 634 tokens per session, scanned A, original, MIT.

Instructions for a terminal-title plugin that labels terminal windows with an emoji, project name, and current conversation topic. It explains how the plugin detects projects and topics, and which environment settings control it.

In plain words
What is it for?
Use it to configure or troubleshoot automatic terminal titles, project and topic detection, emoji prefixes, session-start hooks, and the related environment variables.
Why use it?
It helps keep multiple terminal sessions recognisable when switching between projects or tasks. It also documents how to prevent conflicts with Claude Code's built-in title updater.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions Claude Code.

This is 2389-research/terminal-title's own configuration. It tells Claude Code how to work on terminal-title itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything terminal-title configures →

Reuse

Borrowing it

Nothing to install: this file belongs to 2389-research/terminal-title. 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/2389-research/terminal-title/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/2389-research/terminal-title

Made for: Claude Code.

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README.md
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Per session 634 This file is loaded in full into every session.
When invoked 634 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00634 $0.00634
Opus 5.5 $0.00254 $0.00254
Sonnet 5.5 $0.00127 $0.00127
Haiku 4.5 $0.00063 $0.00063

Measured 4d ago against content hash d40c2088ffa1, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

terminal-title CLAUDE.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 4d 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.

CLAUDE.md · 89 lines

How it starts

The opening of the file, as written. The whole thing — 89 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Terminal Title Plugin

Overview

This plugin automatically updates the terminal title with emoji + project + topic context to provide visual cues when switching between terminal windows.

Skills Included

terminal-title

Auto-invoked skill that:

  1. Detects current project from working directory, git repo, or package.json
  2. Infers topic from conversation context
  3. Reads emoji from $TERMINAL_TITLE_EMOJI environment variable (defaults to 🎉)
  4. Updates terminal title via platform-specific shell script
  5. Detects topic changes throughout the conversation and updates title accordingly

Environment Variables

  • TERMINAL_TITLE_EMOJI -- emoji prefix for the title. User sets this in their shell profile to distinguish contexts (e.g. 💼 for work, 🎉 for personal). Defaults to 🎉 if not set.
  • CLAUDE_CODE_DISABLE_TERMINAL_TITLE -- set to 1 to disable Claude Code's built-in terminal title updater. If Claude Code's built-in title updates conflict with this plugin (producing double updates), set this to 1 in your shell profile. Note: this variable is not documented in the official Claude Code settings reference; the behavior is based on observed usage.

Title Format

$EMOJI ProjectName - Topic

Examples:

  • 💼 OneOnOne - Firebase Config
  • 🎉 dotfiles - zsh config

Hook Configuration

The plugin includes a session start hook:

{
  "hooks": {
    "sessionStart": {
      "skill": "terminal-title"
    }
  }
}

This ensures the terminal title is set automatically when Claude Code starts.

How It Works

Project Detection

Determines project name using Claude's understanding of context:

  • Git repository name or remote URL
  • package.json name field
  • README.md first heading
  • Working directory basename (fallback)

Topic Inference

Infers topic from:

  • Current conversation context (what user is working on)
  • Defaults to "Claude Code" at session start

Shell Scripts

Cross-platform scripts in skills/scripts/:

  • set_title.sh -- Unix/Linux/macOS (bash)
  • set_title.ps1 -- Windows (PowerShell)

Read the full file on GitHub · 89 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. 4d ago Changed · +43 tokens per session d40c2088ffa1
  2. 2mo ago First seen · 89 lines · 591 tokens per session scan A 1a037946d26d

Subscribe to this mod's changes

terminal-title CLAUDE.md is an instructions file published in the GitHub repository 2389-research/terminal-title (2 stars, last pushed 5d ago), licensed MIT. It adds 634 tokens to every session, about $0.0025 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 2026-08-31.

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