lingtai-update-detection

lingtai-update-detection is a skill for Claude Code, Codex from Lingtai-AI/lingtai. It costs 19 tokens per session (657 once invoked), scanned A, original, Apache-2.0.

Instructions for identifying how the running Lingtai TUI was installed. It checks installation metadata, executable paths, Homebrew clues, and symlinks.

In plain words
What is it for?
It helps classify an installation as native, source or user-local, Homebrew, or unknown, and guides the next diagnostic command.
Why use it?
Knowing the installation method determines which update or repair procedure is safe and appropriate.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Not installable: its command points at a path on the author’s own machine, so it runs nowhere else. The line is /home/linuxbrew/.linuxbrew.

Good fit It helps classify an installation as native, source or user-local, Homebrew, or unknown, and guides the next diagnostic command.

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Install

Getting it into your agent

There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.

Made for: Claude Code, Codex.

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.

agentmods badge for lingtai-update-detection

README.md
[![agentmods](https://agentmods.dev/badge/skills/lingtai-ai/lingtai/detection/github.svg)](https://agentmods.dev/skills/lingtai-ai/lingtai/detection)
Your own site
<a href="https://agentmods.dev/skills/lingtai-ai/lingtai/detection"><img src="https://agentmods.dev/badge/skills/lingtai-ai/lingtai/detection/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.

agentmods 80×15 button for lingtai-update-detection

Your own site · 80×15
<a href="https://agentmods.dev/skills/lingtai-ai/lingtai/detection"><img src="https://agentmods.dev/badge/skills/lingtai-ai/lingtai/detection.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 19 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 657 The whole file, excluding the scripts and references it only reads on demand.
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 $0.00019 $0.00657
Opus 5 $0.00010 $0.00329
Sonnet 5 $0.00004 $0.00131
Haiku 4.5 $0.00002 $0.00066

Measured 9d ago against content hash 9ee1b8f3686c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

lingtai-update-detection 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 9d 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.

tui/internal/preset/skills/lingtai-update/reference/detection/SKILL.md · 49 lines

What it actually says

Install-method detection

Nested lingtai-update reference. Detection is deliberately conservative.

  1. Read ~/.lingtai-tui/install.json (or the configured global directory) and validate the lingtai.tui.install/v1 metadata. Matching the running executable, including the managed lingtai-tui alias, makes this a source/user-local install.
  2. Otherwise, recognize Homebrew from the executable path and Homebrew prefixes/environment, including /opt/homebrew, /usr/local, and /home/linuxbrew/.linuxbrew patterns.
  3. Otherwise classify it as unknown/other. Do not run brew merely because it is available, and do not infer source ownership from a path alone when source metadata says otherwise.

Symlinks matter: a manually linked or development binary may not be the Homebrew Cellar copy. Check lingtai-tui doctor output and the resolved executable before choosing a manual command. This metadata is diagnostic and routing information, not a credential store.

A Homebrew-detected install is not upgraded through brew: /update-tui and lingtai-tui self-update migrate it to the native installer instead (see reference/update-tui/SKILL.md). Migrating installs and verifies a native binary, but does not by itself guarantee the shell will run it: on a standard Apple-Silicon Homebrew host, /opt/homebrew/bin is earlier on PATH than install.sh's default native bin dir, so the resolved lingtai-tui can still be the old Homebrew one even after a "successful" install. Detection accounts for this directly — when valid native (install.json) metadata exists but does not match the currently resolved executable, and that executable still resolves as Homebrew, detection reports DuplicateNativeInstall instead of silently treating it as a plain fresh Homebrew install: the method stays Homebrew (the resolved binary really is still Homebrew's), and every update entry point surfaces "native installed, migration not complete, remove Homebrew yourself" instead of re-prompting or re-running the installer. Only once the resolved executable actually matches the native metadata does detection report the install as source/user-local from then on — until then, the Homebrew Cellar copy stays on disk. Removing it always requires a concrete interactive "y" to the "Remove the old Homebrew installation now?" prompt at startup (see reference/update-tui/SKILL.md); self-update and doctor never uninstall it themselves, only report the manual command.

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. 9d ago First seen · 49 lines · 19 tokens per session scan A 9ee1b8f3686c

Subscribe to this mod's changes

lingtai-update-detection is a skill published in the GitHub repository Lingtai-AI/lingtai (700 stars, last pushed yesterday), licensed Apache-2.0. It adds 19 tokens to every session and 657 once invoked, about $0.0001 per session on Opus 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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