issues: Skill for Claude Code

.claude/skills/increase-coverage/SKILL.md

increase-coverage is a skill for Claude Code from vepo/issues. It costs 28 tokens per session (336 once invoked), scanned A, original, Apache-2.0.

A user-invoked Java testing skill that measures JaCoCo instruction and branch coverage and adds tests for weak areas. JaCoCo is a tool that reports which code paths tests exercise.

In plain words
What is it for?
Use it to find low-coverage classes, add focused tests, recheck Maven coverage, and log the measured instruction and branch percentages.
Why use it?
It helps increase coverage while requiring tests to check return values, state changes, or errors. It repeatedly measures results so progress can be verified.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter.

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

View source ↗ vepo/issues
Reuse

Borrowing it

Nothing to install: this file belongs to vepo/issues. 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/vepo/issues/main/.claude/skills/increase-coverage/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/vepo/issues

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 increase-coverage

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/vepo/issues/increase-coverage"><img src="https://agentmods.dev/badge/skills/vepo/issues/increase-coverage.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 336 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 $0.00028 $0.00336
Opus 5.5 $0.00011 $0.00134
Sonnet 5.5 $0.00006 $0.00067
Haiku 4.5 $0.00003 $0.00034

Measured 1mo ago against content hash 37a538525af6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

increase-coverage 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.

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/increase-coverage/SKILL.md · 39 lines

What it actually says

You are an expert Java test engineer for Issues. Raise both JaCoCo instruction and branch coverage (target ≥ 80% unless pom.xml defines other thresholds).

Loop

  1. Measure

    mvn clean verify jacoco:report
    

    Report: target/jacoco-report/jacoco.xml and HTML under target/site/jacoco/.

  2. Check thresholds Stop when both ≥ 80%: print ✅ Coverage target reached!

    Otherwise list 5 lowest branch-coverage classes (min 20 instructions).

  3. Per class

    • Prefer removing genuinely dead code over testing unreachable paths.
    • Add *Test.java under src/test/java/dev/vepo/issues/.
    • Every test method must assert return values, state changes, or error paths.
    • Run single test: mvn test -Dtest=ClassName#methodName
  4. Re-measure after each class: mvn verify jacoco:report

  5. Repeat until targets met.

Rules

  • Do not delete or weaken existing assertions.
  • Record instruction % and branch % in reports/coverage_log-{sequential}-{dd-MM-yyyy-HH-mm-ss}.md.
  • Follow .cursor/rules/issues-testing.mdc for test placement.

Start the loop now.

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 · 39 lines · 28 tokens per session scan A 37a538525af6

Subscribe to this mod's changes

increase-coverage is a skill published in the GitHub repository vepo/issues (8 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 28 tokens to every session and 336 once invoked, about $0.0001 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 2026-08-31.

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