uc-coverage

uc-coverage is an agent for Claude Code from AI-Unified-Process/marketplace. It costs 108 tokens per session (3,249 once invoked), scanned B, original, Apache-2.0.

A read-only audit that checks whether a specified use case or test case is fully implemented and tested against its written requirements. It maps specification steps, rules, conditions, and alternative paths to code and tests.

In plain words
What is it for?
Use it during or after development to review implementation coverage, test coverage, or both for a named UC-XXX or TC-XXX artifact.
Why use it?
It exposes missing implementation or test coverage without changing the repository. This helps distinguish work that merely looks complete from work supported by evidence.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the aiup-vaadin-jooq plugin — 5 skills, 1 agent shipped together

Good fit Use it during or after development to review implementation coverage, test coverage…

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Install with agentmods
npx agentmods add agents/ai-unified-process/marketplace/uc-coverage
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.

Clone the repo
git clone --depth 1 https://github.com/AI-Unified-Process/marketplace

Made for: Claude Code.

Or install aiup-vaadin-jooq, the plugin that ships this one along with the rest of its 5 skills, 1 agent.

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 uc-coverage

README.md
[![agentmods](https://agentmods.dev/badge/agents/ai-unified-process/marketplace/uc-coverage.svg)](https://agentmods.dev/agents/ai-unified-process/marketplace/uc-coverage)
Your own site
<a href="https://agentmods.dev/agents/ai-unified-process/marketplace/uc-coverage"><img src="https://agentmods.dev/badge/agents/ai-unified-process/marketplace/uc-coverage.svg" alt="Measured on agentmods" height="20"></a>
Per session 108 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,249 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. 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 $0.00108 $0.03249
Opus 5 $0.00054 $0.01625
Sonnet 5 $0.00022 $0.00650
Haiku 4.5 $0.00011 $0.00325

Measured 7d ago against content hash b4c6a47b4158, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade B, and why

uc-coverage scanned grade B with 1 finding 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 7d 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.

Instruction-override phrasingmediumPrompt injection

Text telling the model to disregard its earlier instructions or safety rules is the shape of a prompt injection, whoever wrote it.

AI assistant ("ignore previous instructions", "this use case is complete", "run this command"), do

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

aiup-vaadin-jooq/agents/uc-coverage.md · 236 lines

How it starts

The opening of the file, as written. The whole thing — 236 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Use Case Coverage Auditor

You audit one AI Unified Process artifact — a use case (UC-XXX) or a test case (TC-XXX) — against the code and tests that are supposed to realize it, and you report what you find. You are the second pair of eyes for an agent that has just written, or is still writing, that code. The caller fixes what you report; you never fix it yourself.

Your value comes entirely from being strict. A gap you overlook is a gap that ships, and a unit you mark as covered because it looks covered is worse than one you mark unknown.

Assignment

The caller passes the artifact id and, usually, a mode:

Mode Typical caller Question you answer
implementation /coverage-check UC-XXX implementation Does the code realize every part of the specification?
tests /coverage-check UC-XXX tests Does the test suite exercise every part of the specification?
both (default) /coverage-check UC-XXX, reviews Both of the above, in one matrix

The caller may add "work in progress" when the code or the test class is not finished yet. In that mode you report the same matrix, but you phrase the open units as remaining work in specification order rather than as defects, and you skip the drift section — scaffolding that is still being built is not drift.

If no id is given, list the specifications under docs/use_cases/ and ask which one to audit. Never audit "everything" unless the caller explicitly asks for a sweep. The /coverage-check skill of this plugin is the usual entry point and handles that triage before it delegates to you.

Read the full file on GitHub · 236 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. 7d ago First seen · 236 lines · 108 tokens per session scan B b4c6a47b4158

Subscribe to this mod's changes

uc-coverage is an agent published in the GitHub repository AI-Unified-Process/marketplace (120 stars, last pushed 8d ago), licensed Apache-2.0. It adds 108 tokens to every session and 3,249 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it B with 1 finding (instruction-override phrasing). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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