detection-matrix

A checklist for testing and onboarding command-line AI coding assistants. It records observed details such as versions, rendering methods, prompts, scrolling, and screen behavior.

In plain words
What is it for?
Use it to compare coding-agent terminals, record their user-interface behavior, and decide whether a newly supported agent has been fully analyzed.
Why use it?
It prevents support work from relying on guesses by requiring each important behavior to be checked in a live session.

Agent

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 agents/sstraus/tuicommander/detection-matrix
Clone the repo
git clone --depth 1 https://github.com/sstraus/tuicommander
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 2,788 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 $0.02788
Opus 5 $0.00000 $0.01394
Sonnet 5 $0.00000 $0.00558
Haiku 4.5 $0.00000 $0.00279

Measured 2d ago against content hash 062ae4d2e8b7, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

detection-matrix 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.

docs/architecture/agents/detection-matrix.md · 157 lines

How it starts

The opening of the file, as written. The whole thing — 157 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Detection Matrix

Standardized checklist for analyzing and onboarding new AI coding agent CLIs. Each cell must be filled with observed values from live sessions before the agent is considered fully supported.

Detection Matrix

1. Identity & Rendering

Property Claude Code Codex CLI Gemini CLI Aider OpenCode
Version tested v2.1.81 v0.116.0+ (re-verified) v0.34.0 v0.86.2 v1.2.20
Date tested 2026-03-21 2026-04-19 2026-03-22 2026-03-22 2026-03-22
Rendering engine Ink (React) Ink (React) Ink-like (Node.js) Python rich + readline Bubble Tea (Go)
Cursor positioning Relative (\033[NA]) Absolute (\033[r;cH) Relative (\033[1A]) Sequential (no cursor) Absolute (\033[r;cH)
Scroll mechanism \r\n padding Scroll regions (\033[n;mr]) \r\n padding Normal scroll Full-screen redraw
Screen clear on menus Sometimes (\033[2J) No No N/A Full-screen TUI
Parsing strategy Changed-rows delta Changed-rows delta Changed-rows delta Changed-rows delta Screen snapshot

2. Prompt Line

Property Claude Code Codex CLI Gemini CLI Aider OpenCode
Prompt char (U+276F) (U+203A, bold) > (purple, rgb 215,175,255) > (green, ANSI #40) None (framed box)
Prompt background None Dark gray (rgb 57,57,57) Dark gray (rgb 65,65,65) None Dark (rgb 30,30,30)
Prompt box border ──── separators Background color only ▀▀▀ top / ▄▄▄ bottom None ┃╹▀ vertical frame
Ghost text style dim cell attribute \033[2m dim Gray (rgb 175,175,175) N/A Gray placeholder
Multiline input Enter = submit Enter = newline Enter = submit Enter = submit Unknown

3. Separator Lines

Property Claude Code Codex CLI Gemini CLI Aider OpenCode
Uses separators Yes Partially Yes Yes (green ─────) No (uses ┃╹▀)
Separator chars (U+2500) (U+2500) (U+2500) (U+2500) (vertical frame)
Separator color Gray (rgb 136,136,136) Standard Dark gray (rgb 88,88,88) Green (rgb 0,204,0) N/A
Separator purpose Frame prompt box Between tool output & summary Above prompt area Between conversation turns Prompt box border
Decorated separators Yes (──── label ──) No No No N/A
Min run length 4+ chars Full width Full width Full width N/A

Read the full file on GitHub · 157 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 · 157 lines · 0 tokens per session scan A 062ae4d2e8b7

Subscribe to this mod's changes

detection-matrix is an agent published in the GitHub repository sstraus/tuicommander (125 stars, last pushed 5d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 2,788 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 2026-08-30.

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