What is test-sloc-cut?

A test-suite reduction method that records the facts each test asserts and the code branches it covers. It keeps tests only when their removal would leave a fact or branch without verified coverage, and checks moved facts with mutation tests.

Use it to trim, deduplicate, or consolidate tests, measure branch coverage, find a covering set, and verify checks moved to a cheaper test layer.

Duplicate tests increase maintenance work and slow test runs. This method provides evidence for reducing them without losing tested behaviour.

test-sloc-cut — Skill for Claude Code and Codex by dashed

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.

Any agent

npx skills add dashed/claude-marketplace --skill test-sloc-cut

Clone the repo

git clone --depth 1 https://github.com/dashed/claude-marketplace

Made for: Claude Code, Codex.

Its marketplace also offers this one on its own, as the plugin test-sloc-cut — /plugin install test-sloc-cut after adding the marketplace above.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/dashed/claude-marketplace/test-sloc-cut/github.svg)](https://agentmods.dev/skills/dashed/claude-marketplace/test-sloc-cut)

Your own site

<a href="https://agentmods.dev/skills/dashed/claude-marketplace/test-sloc-cut"><img src="https://agentmods.dev/badge/skills/dashed/claude-marketplace/test-sloc-cut/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/dashed/claude-marketplace/test-sloc-cut"><img src="https://agentmods.dev/badge/skills/dashed/claude-marketplace/test-sloc-cut.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 219 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 3,173 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 unknown 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.

Model	Per session	Once invoked
Fable 5.1	$0.00219	$0.03173
Opus 5.5	$0.00088	$0.01269
Sonnet 5.5	$0.00044	$0.00635
Haiku 4.5	$0.00022	$0.00317

Measured 1mo ago against content hash de4548d1a669, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

test-sloc-cut 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 3 executable files (scripts/count_code_lines.py, scripts/coverage_map.py, scripts/fact_matrix.py), 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.

plugins/test-sloc-cut/skills/test-sloc-cut/SKILL.md · 120 lines

The source is not reproduced here

No licence file

Read it on GitHub

Files

What ships with it

6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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.

1mo ago Changed · +4 lines de4548d1a669
1mo ago Changed · +1 lines · +6 tokens per session 06a8cd44aad8
1mo ago First seen · 115 lines · 213 tokens per session scan A 73daa72163ab

Subscribe to this mod's changes

test-sloc-cut is a skill published in the GitHub repository dashed/claude-marketplace (25 stars, last pushed 16d ago), with no licence file. It adds 219 tokens to every session and 3,173 once invoked, about $0.0009 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 2026-09-10.

Testing Unit testing

test-sloc-cut next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
test-sloc-cutdashed/claude-marketplace	Skill	25	16d ago	none	A	219	Claude Code, Codex
test-masterJeffallan/claude-skills	Skill	12k	7d ago	MIT	A	104	Claude Code
migrate-xunit-to-xunit-v3dotnet/skills	Skill	5.8k	yesterday	MIT	A	149	Claude Code
go-testingGentleman-Programming/gentle-ai	Skill	8.4k	yesterday	MIT	A	26	Claude Code, Codex
principle-test-behavior-not-implementationmichael-denyer/pstack-claude	Skill	4.1k	yesterday	MIT	A	50	Claude Code
dart-testdartsim/dart	Skill	1.2k	yesterday	BSD-2-Clause	A	18	Claude Code, Codex
test-generatorrshankras/claude-code-apple-skills	Skill	864	2d ago	MIT	A	33	Claude Code