coverage

A command for checking test coverage in a Rust project with cargo tarpaulin, a tool that measures which code is exercised by tests.

In plain words
What is it for?
Use it to inspect coverage and add straightforward tests where gaps are found.
Why use it?
It shows where tests may be missing and can suggest obvious improvements when needed.

Command for Claude Code

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/marclove/known/coverage
Clone the repo
git clone --depth 1 https://github.com/marclove/known

Made for: Claude Code.

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 20 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00000 $0.00020
Opus 5 $0.00000 $0.00010
Sonnet 5 $0.00000 $0.00004
Haiku 4.5 $0.00000 $0.00002

Measured yesterday against content hash aabb4e9a3434, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

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 yesterday.

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/commands/coverage.md · 2 lines

What it actually says

Check our test coverage (cargo tarpaulin) and add any obvious improvements, if called for.

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. yesterday First seen · 2 lines · 0 tokens per session scan A aabb4e9a3434

Subscribe to this mod's changes

coverage is a command published in the GitHub repository marclove/known (3 stars, last pushed 10mo ago), licensed BSD-3-Clause. It costs nothing until one of its globs matches a file; then it loads 20 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 2026-08-31.