vc-test-coverage-plan

vc-test-coverage-plan is a skill for Claude Code, Codex from withkynam/vibecode-pro-max-kit. It costs 51 tokens per session (2,603 once invoked), scanned A, original, MIT.

A test-planning tool that assigns different kinds of checks to each part of a planned code change. TDD, or test-driven development, means designing tests before or alongside the implementation.

In plain words
What is it for?
Use it to create a test plan for a known set of affected files or features, including exact commands, fully automated checks, human-assisted checks, agent probes, and known untested areas.
Why use it?
It makes clear what automated tests prove, what they cannot prove, and how to handle gaps in coverage.

Skill for Claude CodeCodex

About the project

vibecode-pro-max-kit is a set of instructions, agents, skills, hooks, and settings that gives AI coding agents a plan-first software development workflow. It is designed for developers, product owners, and other builders using agents such as Claude Code, Codex, Cursor, Windsurf, or Copilot across different technology stacks. The catalogue entries are the kit's own workflow components.

withkynam/vibecode-pro-max-kit · 1,114 stars · on GitHub

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 skills/withkynam/vibecode-pro-max-kit/vc-test-coverage-plan
Any agent
npx skills add withkynam/vibecode-pro-max-kit --skill vc-test-coverage-plan
Clone the repo
git clone --depth 1 https://github.com/withkynam/vibecode-pro-max-kit

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 vc-test-coverage-plan

README.md
[![agentmods](https://agentmods.dev/badge/skills/withkynam/vibecode-pro-max-kit/vc-test-coverage-plan.svg)](https://agentmods.dev/skills/withkynam/vibecode-pro-max-kit/vc-test-coverage-plan)
Your own site
<a href="https://agentmods.dev/skills/withkynam/vibecode-pro-max-kit/vc-test-coverage-plan"><img src="https://agentmods.dev/badge/skills/withkynam/vibecode-pro-max-kit/vc-test-coverage-plan.svg" alt="Measured on agentmods" height="20"></a>
Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,603 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 $0.00051 $0.02603
Opus 5 $0.00026 $0.01301
Sonnet 5 $0.00010 $0.00521
Haiku 4.5 $0.00005 $0.00260

Measured 5d ago against content hash ac3d5ce1368f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

vc-test-coverage-plan 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.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/validate-test-coverage-output.mjs), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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/vc-test-coverage-plan/SKILL.md · 190 lines

How it starts

The opening of the file, as written. The whole thing — 190 lines — stays where its author put it; the contents beside it link to each section on GitHub.

vc-test-coverage-plan

Output style: Follow process/development-protocols/communication-standards.md — answer-first, plain language, no unexplained jargon, TL;DR on long responses.

Generate a TDD-first full test plan per blast radius area. Assigns all 4 test tiers with exact commands, what each proves, what it does NOT prove, and explicit resolution options for every gap.

Boundary vs vc-feasibility-test

This skill is POST-decision: the design is already chosen and you are assigning coverage tiers across a known blast radius. If instead an approach cannot be decided because a runtime/library/external mechanism is unverified — that is a PRE-decision question and belongs to vc-feasibility-test (a one-shot empirical probe producing a VIABLE/NOT-VIABLE/INCONCLUSIVE VERDICT), run before SPEC/INNOVATE locks. Do not use test tiers to answer "does this mechanism work at all?".

When To Invoke

  • PLAN phase — populate the Verification Evidence section of a new plan
  • VALIDATE Section III — generate the full test plan after V2 fan-out, before writing the validate-contract
  • EXECUTE phase — as test gates at the end of each plan section and as a regression suite after all sections complete

Context Discovery (MANDATORY FIRST — do this before anything else)

This skill MUST NOT infer tiers, commands, or runners from training data. Before reading the plan or naming a single area:

  1. Invoke vc-context-discovery to load the relevant context group files.
  2. Read process/context/tests/all-tests.md and follow its downstream routing chain to the relevant deeper test docs (tests/container-e2e.md, tests/browser-automation.md, tests/live-e2e.md, etc.). The entry point is a router, not full knowledge — reading only the router and skipping the chain is insufficient.
  3. Discover the existing test files inside the blast radius (real runners + real commands + real fixtures — not guesses).

Hard stop (mirrors vc-plan-agent TIER_ASSIGNMENTS_BLOCKED): if the all-tests.md routing chain was not loaded, or existing blast-radius test files were not discovered, STOP and emit TIER_ASSIGNMENTS_BLOCKED — report BLOCKED with "Test context chain not loaded; returning to RESEARCH to load all-tests.md and discover existing test files. Do not generate tier assignments from training data." Do NOT proceed to the waterfall. Every Command / Steps cell below must be an exact command sourced from the loaded test context, never an inferred placeholder.

Read the full file on GitHub · 190 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 190 lines · 51 tokens per session scan A ac3d5ce1368f

Subscribe to this mod's changes

vc-test-coverage-plan is a skill published in the GitHub repository withkynam/vibecode-pro-max-kit (1,114 stars, last pushed 2mo ago), licensed MIT. It adds 51 tokens to every session and 2,603 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 2026-08-30.

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