test-coverage-assistant

test-coverage-assistant is a skill for Claude Code, Codex from ValorVie/custom-skills. It costs 67 tokens per session (2,090 once invoked), scanned A, original, MIT.

A skill for checking whether a feature's tests cover eight areas, such as normal behavior, limits, errors, permissions, state changes, validation, integration, and AI-generated tests.

In plain words
What is it for?
It is for reviewing test completeness, assessing coverage quality, and improving tests for a feature.
Why use it?
It helps reveal important test gaps that a simple code-coverage percentage may miss.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions Claude Code.

Needs its repository: it reads a path above its own folder, which exists only inside the repository. The line is **Language**: English | [繁體中文](../../../locales/zh-TW/skills/claude-code/test-coverage-assistant/SKILL.md).

Good fit It is for reviewing test completeness, assessing coverage quality, and improving tests for a feature.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/ValorVie/custom-skills
agentmods
npx agentmods add skills/valorvie/custom-skills/test-coverage-assistant

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 test-coverage-assistant

README.md
[![agentmods](https://agentmods.dev/badge/skills/valorvie/custom-skills/test-coverage-assistant/github.svg)](https://agentmods.dev/skills/valorvie/custom-skills/test-coverage-assistant)
Your own site
<a href="https://agentmods.dev/skills/valorvie/custom-skills/test-coverage-assistant"><img src="https://agentmods.dev/badge/skills/valorvie/custom-skills/test-coverage-assistant/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 test-coverage-assistant

Your own site · 80×15
<a href="https://agentmods.dev/skills/valorvie/custom-skills/test-coverage-assistant"><img src="https://agentmods.dev/badge/skills/valorvie/custom-skills/test-coverage-assistant.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 67 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,090 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 $0.00067 $0.02090
Opus 5 $0.00034 $0.01045
Sonnet 5 $0.00013 $0.00418
Haiku 4.5 $0.00007 $0.00209

Measured 5d ago against content hash 9b153c519fa6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

test-coverage-assistant 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 5d 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.

upstream/uds/backup/skills/test-coverage-assistant/SKILL.md · 294 lines

How it starts

The opening of the file, as written. The whole thing — 294 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Test Coverage Assistant

Language: English | 繁體中文

Version: 1.1.1 Last Updated: 2026-01-30 Applicability: Claude Code Skills


Purpose

This skill helps evaluate and improve test completeness using the 8 dimensions framework, ensuring comprehensive test coverage for each feature.

Quick Reference

The 8 Dimensions

┌─────────────────────────────────────────────────────────────┐
│              Test Completeness = 8 Dimensions                │
├─────────────────────────────────────────────────────────────┤
│  1. Happy Path        Normal expected behavior              │
│  2. Boundary          Min/max values, limits                │
│  3. Error Handling    Invalid input, exceptions             │
│  4. Authorization     Role-based access control             │
│  5. State Changes     Before/after verification             │
│  6. Validation        Format, business rules                │
│  7. Integration       Real query verification               │
│  8. AI Generation     AI-generated test quality (NEW)       │
└─────────────────────────────────────────────────────────────┘

Dimension Summary Table

# Dimension What to Test Key Question
1 Happy Path Valid input → expected output Does the normal flow work?
2 Boundary Min/max values, limits What happens at edges?
3 Error Handling Invalid input, not found How do errors behave?
4 Authorization Role permissions Who can do what?
5 State Changes Before/after states Did the state change correctly?
6 Validation Format, business rules Is input validated?
7 Integration Real DB/API calls Does the query really work?
8 AI Generation AI-generated test quality Are AI tests meaningful?

When to Apply Each Dimension

Feature Type Required Dimensions
CRUD API 1, 2, 3, 4, 6, 7, 8*
Query/Search 1, 2, 3, 4, 7, 8*
State Machine 1, 3, 4, 5, 6, 8*
Validation Logic 1, 2, 3, 6, 8*
Background Job 1, 3, 5, 8*
External Integration 1, 3, 7, 8*

Read the full file on GitHub · 294 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. 5d ago First seen · 294 lines · 67 tokens per session scan A 9b153c519fa6

Subscribe to this mod's changes

test-coverage-assistant is a skill published in the GitHub repository ValorVie/custom-skills (5 stars, last pushed yesterday), licensed MIT. It adds 67 tokens to every session and 2,090 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 2026-09-03.