coverage-gaps

An analysis of a test suite compared with the application's public behavior, such as API endpoints, business rules, and data access code. It identifies what is not tested or is tested only on the happy path.

In plain words
What is it for?
Use it to find missing tests for important writes, reads, validation failures, boundary cases, and data-integrity logic across a solution.
Why use it?
It turns broad test coverage concerns into a prioritized list of specific missing cases. It also points out flaky tests, tests using real dependencies unnecessarily, and naming problems.

Command

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.

agentmods
npx agentmods add commands/cwoodruff/dotnet-claude-code-kit/coverage-gaps
Clone the repo
git clone --depth 1 https://github.com/cwoodruff/dotnet-claude-code-kit
Per session 12 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 191 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.00012 $0.00191
Opus 5 $0.00006 $0.00096
Sonnet 5 $0.00002 $0.00038
Haiku 4.5 $0.00001 $0.00019

Measured 2d ago against content hash 723a1232492c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

coverage-gaps 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 2d 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.

Origin

This is a copy

100% identical to coverage-gaps — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

commands/coverage-gaps.md · 16 lines

What it actually says

Analyze test coverage gaps for $ARGUMENTS (default: whole solution).

  1. Enumerate the public surface: endpoints, Core services/domain logic, Data repositories.
  2. Enumerate existing tests and map them to that surface.
  3. Report:
    • Untested critical paths — endpoints or business rules with zero coverage, ranked by risk (writes > reads, money/data-integrity logic first)
    • Weakly tested areas — only happy path covered; list the missing failure/boundary cases per item
    • Test debt — flaky patterns, real-dependency usage in unit tests, naming violations
  4. Finish with a prioritized top-10 list of specific tests to write, each with its exact proposed name (MethodName_Scenario_ExpectedResult).

Offer to hand the top items to the test-writer subagent.

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. 2d ago First seen · 16 lines · 12 tokens per session scan A 723a1232492c

Subscribe to this mod's changes

coverage-gaps is a command published in the GitHub repository cwoodruff/dotnet-claude-code-kit (2 stars, last pushed 1mo ago), licensed MIT. It adds 12 tokens to every session and 191 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to coverage-gaps, differing in 0 lines, and is treated as a copy.