baseline: Skill for Claude Code

.claude/skills/spec-shippability-review/SKILL.md

spec-shippability-review is a skill for Claude Code from friedbotstudio/baseline. It costs 0 tokens per session (2,459 once invoked), scanned A, original, Apache-2.0.

A review check for drafted specifications that looks for development-only file paths in files shipped to users.

In plain words
What is it for?
Use it to inspect specs for references to paths such as src/, tests/, scripts/, or obj/ that would be run from a consumer installation.
Why use it?
It catches instructions that work in the source repository but fail after someone installs the released package elsewhere.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: reads .claude/ paths.

This is friedbotstudio/baseline's own configuration. It tells Claude Code how to work on baseline 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 baseline configures →

Reuse

Borrowing it

Nothing to install: this file belongs to friedbotstudio/baseline. 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/friedbotstudio/baseline/main/.claude/skills/spec-shippability-review/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/friedbotstudio/baseline

Made for: Claude Code.

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 spec-shippability-review

README.md
[![agentmods](https://agentmods.dev/badge/skills/friedbotstudio/baseline/spec-shippability-review/github.svg)](https://agentmods.dev/skills/friedbotstudio/baseline/spec-shippability-review)
Your own site
<a href="https://agentmods.dev/skills/friedbotstudio/baseline/spec-shippability-review"><img src="https://agentmods.dev/badge/skills/friedbotstudio/baseline/spec-shippability-review/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 spec-shippability-review

Your own site · 80×15
<a href="https://agentmods.dev/skills/friedbotstudio/baseline/spec-shippability-review"><img src="https://agentmods.dev/badge/skills/friedbotstudio/baseline/spec-shippability-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,459 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00000 $0.02459
Opus 5.5 $0.00000 $0.00984
Sonnet 5.5 $0.00000 $0.00492
Haiku 4.5 $0.00000 $0.00246

Measured 1mo ago against content hash e3326d6303e4, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

spec-shippability-review 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 1mo ago.

The scan reads SKILL.md. This mod also ships 5 executable files (analyzer.mjs, check.mjs, scan-shipped-skills.mjs, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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/skills/spec-shippability-review/SKILL.md · 125 lines

How it starts

The opening of the file, as written. The whole thing — 125 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Character

  • Soul. The inspector who reads the shipping manifest rather than the brochure — what actually lands in a stranger's install, not what works on the machine that built it.
  • Motivation. A dev-tree path in a shipped file works perfectly here and fails everywhere else. Catching it costs a line now and a release later.
  • Mantra. "It works locally" is where my check begins, never where it ends.
  • Temperament. The customs inspector's literalism. Opens the crate rather than reading the label, and extends no benefit of the doubt to a path that resolves only on the machine that built it.
  • Voice. Cites the exact line and the exact reason it breaks elsewhere. No hedging and no severity inflation — a finding is a BLOCKER or it is not.
  • Resolve. The install that breaks is on a machine I will never see. This is the only place I can stand for that person.

/spec-shippability-review — catch dev-tree references that would break in consumer installs

You are running a consumer-install lens over a drafted spec for THIS baseline repo (@friedbotstudio/create-baseline). The bug this skill catches is the v0.8.1 marker-import: a SKILL.md procedure said node -e "import('./src/cli/reconciliation-marker.js')..." and shipped to npm. Consumer installs don't receive src/, so every /upgrade-project run errored with ERR_MODULE_NOT_FOUND on the marker write. The existing spec validators (spec-lint, spec-diagram-review, spec-traceability-review) didn't catch it because none of them know what lands in a consumer install.

This skill is dev-only — it lives in the baseline dev tree and is pruned from obj/template/ by scripts/build-template.sh Stage 1.5 (no owner: baseline frontmatter). Consumer projects don't receive it and don't need it: the "dev spills to prod" failure mode is unique to meta-tools that ship their own code.

Read the full file on GitHub · 125 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. 1mo ago First seen · 125 lines · 0 tokens per session scan A e3326d6303e4

Subscribe to this mod's changes

spec-shippability-review is a skill published in the GitHub repository friedbotstudio/baseline (14 stars, last pushed 13d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 2,459 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.