lineage: Skill for Claude Code

.agents/skills/lineage-cli-ux-guardrails/SKILL.md

lineage-cli-ux-guardrails is a skill for Claude Code, Codex from agentic-lineage/lineage. It costs 54 tokens per session (347 once invoked), scanned A, original, MIT.

A set of project-specific rules for designing and reviewing Lineage command-line interfaces, the text-based commands developers run in a terminal. It covers command names, prompts, dry runs, output, permissions, and setup flows.

In plain words
What is it for?
Use it when adding or reviewing commands, flags, prompts, help text, dry-run behavior, shims, or receiver setup; it also guides safe summaries, errors, permission handling, and non-interactive use.
Why use it?
It helps make command behavior predictable and inspectable, especially for people who are not familiar with the project or who run commands in scripts and continuous integration.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is agentic-lineage/lineage's own configuration. It tells Claude Code and Codex how to work on lineage 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 lineage configures →

Reuse

Borrowing it

Nothing to install: this file belongs to agentic-lineage/lineage. 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/agentic-lineage/lineage/main/.agents/skills/lineage-cli-ux-guardrails/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/agentic-lineage/lineage

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 lineage-cli-ux-guardrails

README.md
[![agentmods](https://agentmods.dev/badge/skills/agentic-lineage/lineage/lineage-cli-ux-guardrails/github.svg)](https://agentmods.dev/skills/agentic-lineage/lineage/lineage-cli-ux-guardrails)
Your own site
<a href="https://agentmods.dev/skills/agentic-lineage/lineage/lineage-cli-ux-guardrails"><img src="https://agentmods.dev/badge/skills/agentic-lineage/lineage/lineage-cli-ux-guardrails/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 lineage-cli-ux-guardrails

Your own site · 80×15
<a href="https://agentmods.dev/skills/agentic-lineage/lineage/lineage-cli-ux-guardrails"><img src="https://agentmods.dev/badge/skills/agentic-lineage/lineage/lineage-cli-ux-guardrails.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 347 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 $0.00054 $0.00347
Opus 5 $0.00027 $0.00173
Sonnet 5 $0.00011 $0.00069
Haiku 4.5 $0.00005 $0.00035

Measured 12d ago against content hash 132898851ef6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

lineage-cli-ux-guardrails 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 12d 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.

.agents/skills/lineage-cli-ux-guardrails/SKILL.md · 34 lines

What it actually says

Lineage CLI UX Guardrails

Lineage should make agent-environment distribution feel safe for non-expert users without hiding what will happen.

CLI Contract

  • Prefer explicit verbs: package init, package validate, enable, run, install-shims.
  • Preserve existing command signatures unless the linked issue explicitly calls for a breaking change.
  • --dry-run must be side-effect-free.
  • Interactive prompts must have a non-interactive path for scripts and CI.
  • Declining a permission prompt must stop the unsafe operation cleanly.
  • Print human-readable summaries by default; keep output deterministic and stable enough to test.
  • Send normal command results to stdout and actionable errors to stderr.

Receiver Experience

  • Inspect before enable.
  • Show what package, digest, capabilities, provider, files, and setup actions are involved.
  • Do not ask users to manually assemble plugin/config/tracker files when Lineage can safely prepare templates for them.
  • Do not make activation depend on secrets being bundled. Receiver-local secrets and provider login remain local.
  • Avoid jargon in user-facing messages. Explain the action, target path, and consequence.

Testing Expectations

  • Test help/usage for new commands.
  • Test successful output and failure output.
  • Test --dry-run, declined prompts, approved prompts, and repeated runs when the command writes files.
  • Test provider argument passthrough when launch behavior changes.
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. 12d ago First seen · 34 lines · 54 tokens per session scan A 132898851ef6

Subscribe to this mod's changes

lineage-cli-ux-guardrails is a skill published in the GitHub repository agentic-lineage/lineage (10 stars, last pushed 3d ago), licensed MIT. It adds 54 tokens to every session and 347 once invoked, about $0.0003 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 2026-08-31.

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