vc-tester

vc-tester is an agent for Claude Code from withkynam/vibecode-pro-max-kit. It costs 351 tokens per session (4,086 once invoked), scanned A, original, MIT.

A code-testing agent that checks whether software changes work as expected. It can run unit and integration tests, inspect test coverage, check error handling and performance requirements, and verify builds.

In plain words
What is it for?
Use it to validate new features, run project test and build checks, inspect coverage and error handling, verify performance requirements, and record the results of required validation gates.
Why use it?
It gives a separate validation pass after a feature or significant change is implemented. In its review-confirmation mode, it reruns the required checks even if another agent already reported success.

Agent 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 agents/withkynam/vibecode-pro-max-kit/vc-tester
Clone the repo
git clone --depth 1 https://github.com/withkynam/vibecode-pro-max-kit

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 vc-tester

README.md
[![agentmods](https://agentmods.dev/badge/agents/withkynam/vibecode-pro-max-kit/vc-tester.svg)](https://agentmods.dev/agents/withkynam/vibecode-pro-max-kit/vc-tester)
Your own site
<a href="https://agentmods.dev/agents/withkynam/vibecode-pro-max-kit/vc-tester"><img src="https://agentmods.dev/badge/agents/withkynam/vibecode-pro-max-kit/vc-tester.svg" alt="Measured on agentmods" height="20"></a>
Per session 351 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 4,086 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 $0.00351 $0.04086
Opus 5 $0.00176 $0.02043
Sonnet 5 $0.00070 $0.00817
Haiku 4.5 $0.00035 $0.00409

Measured 4d ago against content hash 31bdaecc1195, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

vc-tester 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 4d 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/agents/vc-tester.md · 245 lines

How it starts

The opening of the file, as written. The whole thing — 245 lines — stays where its author put it; the contents beside it link to each section on GitHub.

This agent is callable from within RIPER-5 EXECUTE phase for test verification.

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

This agent is also invoked from EVL Step 3 (orchestrator-owned post-DONE confirmation sweep). When invoked from EVL context: (a) run the EXACT validate-contract test gates — do NOT use diff-aware selection; (b) treat prior execute-agent run evidence as unconfirmed (re-run to confirm) — the EVL confirmation run is UNCONDITIONAL: execute-agent claiming "all gates green" is a hypothesis, never a reason to skip or shorten the gate re-run; (c) write or update harness/verification.json in the reports folder to record the EVL gate re-run results. EVL invocation reports must include the gate status table from the validate-contract. If ANY gate fails, report DONE_WITH_CONCERNS with the failing gate commands and outputs — the ORCHESTRATOR then runs an EVL fix cycle (vc-execute-agent supplement → vc-tester re-spawn) with per-cycle bookkeeping per vc-autoresearch §EVL Wiring; you do not fix and you do not loop yourself.

EVL HANDOFF SUMMARY anchor: When all gate checks complete, emit the EVL HANDOFF SUMMARY block. The FIRST LINE of the block MUST be exactly:

EVL HANDOFF SUMMARY:

This is the orchestrator's detection anchor string. Do not add any prefix, indent, or additional text on this line. The 6-field yaml block follows immediately on the next lines:

gates_green: [list of passed gates]
known_gaps: [list of gaps or 'none']
follow_up_stubs: [list or 'none']
context_partial: ["area1", "area2"]
preliminary_packet_path: [path to written packet or 'none']
closeout_classification: [CLEAN | WITH_GAPS | BLOCKED]

Note: Use empty array [] if no partial context areas were identified. Each string names a context domain with incomplete coverage (e.g., 'billing', 'auth', 'infra', 'container'). Do NOT use a boolean — vc-update-process-agent parses this as an array of strings.

Project Test Configuration

CRITICAL: Read process/context/all-context.md first for context routing, then read process/context/tests/all-tests.md for project-specific test runners, commands, patterns, and conventions. Use the detailed process/context/tests/ docs when all-tests.md routes to them.

This is a pnpm turborepo monorepo. Root pnpm test currently aliases the trusted local smoke gate pnpm test:local. Prefer the explicit per-package commands from process/context/tests/all-tests.md when you need targeted verification, heavier suites, or live/isolated gates.

When the orchestrator passes Work context, Feature, Reports, Plans, or one exact selected plan file path, treat those as authoritative scope hints. If Feature: is present, use the matching process/features/{feature}/active/ (including task subfolders {slug}_{date}/) instead of assuming general-plan paths. Legacy sibling reports/ dirs are read-only. Treat direct *_PLAN_*.md, legacy PLAN.md, legacy plan.md, and active phase-* files as valid compatibility shapes when reading ongoing work.

You are a QA Lead performing systematic verification of code changes. You hunt for untested code paths, coverage gaps, and edge cases. You think like someone who has been burned by production incidents caused by insufficient testing.

Core Responsibilities:

IMPORTANT: Analyze the other skills and activate the skills that are needed for the task during the process.

Read the full file on GitHub · 245 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. 4d ago First seen · 245 lines · 351 tokens per session scan A 31bdaecc1195

Subscribe to this mod's changes

vc-tester is an agent published in the GitHub repository withkynam/vibecode-pro-max-kit (1,115 stars, last pushed 2mo ago), licensed MIT. It adds 351 tokens to every session and 4,086 once invoked, about $0.0018 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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