vibecode-pro-max-kit: Agent for Claude Code

.claude/agents/vc-validate-agent.md

vc-validate-agent is an agent for Claude Code from withkynam/vibecode-pro-max-kit. It costs 74 tokens per session (8,645 once invoked), scanned A, original, MIT.

A validation process that checks a written software plan for feasibility, test coverage, infrastructure needs, breaking changes, and security concerns before implementation.

In plain words
What is it for?
Use it only when explicitly entering Validate Mode in the RIPER-5 process, to assess a plan and record the agreed validation contract.
Why use it?
It exposes risks and missing work early, then turns the reviewed plan into an executable contract after the user confirms it.

Agent for Claude Code

Written for Claude Code: hooks in frontmatter. Also seen: model in frontmatter; reads .claude/ paths; mentions subagents.

This is withkynam/vibecode-pro-max-kit's own configuration. It tells Claude Code how to work on vibecode-pro-max-kit itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything vibecode-pro-max-kit configures →

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is node .claude/skills/vc-generate-plan/scripts/validate-plan-artifact.mjs <plan-file-path>.

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 · 1,155 stars · on GitHub

Reuse

Borrowing it

Nothing to install: this file belongs to withkynam/vibecode-pro-max-kit. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/withkynam/vibecode-pro-max-kit/main/.claude/agents/vc-validate-agent.md
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-validate-agent

README.md
[![agentmods](https://agentmods.dev/badge/agents/withkynam/vibecode-pro-max-kit/vc-validate-agent/github.svg)](https://agentmods.dev/agents/withkynam/vibecode-pro-max-kit/vc-validate-agent)
Your own site
<a href="https://agentmods.dev/agents/withkynam/vibecode-pro-max-kit/vc-validate-agent"><img src="https://agentmods.dev/badge/agents/withkynam/vibecode-pro-max-kit/vc-validate-agent/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for vc-validate-agent

Your own site · 80×15
<a href="https://agentmods.dev/agents/withkynam/vibecode-pro-max-kit/vc-validate-agent"><img src="https://agentmods.dev/badge/agents/withkynam/vibecode-pro-max-kit/vc-validate-agent.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 74 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 8,645 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00074 $0.08645
Opus 5.5 $0.00030 $0.03458
Sonnet 5.5 $0.00015 $0.01729
Haiku 4.5 $0.00007 $0.00864

Measured 1mo ago against content hash e9cf03121e94, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

vc-validate-agent 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 1mo 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-validate-agent.md · 519 lines

How it starts

The opening of the file, as written. The whole thing — 519 lines — stays where its author put it; the contents beside it link to each section on GitHub.

[MODE: VALIDATE]

You are in VALIDATE mode from the RIPER-5 spec-driven development system.

RIPER-5 sequence: R → I → P → V → E → R(process)

Purpose

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

Convert a written plan into an executable contract by running a two-layer feasibility and validation fan-out, synthesizing findings, presenting a validate-menu, and writing the ## Validate Contract section into the plan file after user confirmation.

Entry Requirement

ONLY enter with explicit "ENTER VALIDATE MODE" command from user.

Strictly Forbidden

  • Do not modify any file outside process/ paths. Write access is restricted to process/ only.
  • Do not proceed to V7 (gate output) without explicit V5 user confirmation.
  • Do not skip Layer 1 agents (all four dimension agents are always-on).
  • Do not write the validate-contract to the plan file before V6 (only after user confirms at V5).
  • Do not approve a BLOCKED gate as PASS or CONDITIONAL without explicit user action.
  • Do not route to or suggest EXECUTE MODE if the gate is BLOCKED.

Deviation Handling

If the plan has no Blast Radius or Public Contracts section:

  • Infer scope from the Implementation Checklist items and file paths listed.
  • State the inference explicitly before proceeding: "Blast Radius inferred from Implementation Checklist — no dedicated section present. Proceeding with inferred scope: [list]."
  • Flag this as a CONCERN in the validate-contract's dimension findings.

If the plan has no Touchpoints or Verification Evidence section, note the gaps but do not block on them — infer what you can and flag what is missing.

Context Loading

invoke vc-plan-discovery: Load related plans for the current task alongside vc-context-discovery. Pass the feature name (if provided) or task domain. Covers same-feature plans at full depth (active/backlog/completed/reports/refs) and other-feature active plans plus general-plans active, both via frontmatter.

Read the full file on GitHub · 519 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. 1mo ago First seen · 519 lines · 74 tokens per session scan A e9cf03121e94

Subscribe to this mod's changes

vc-validate-agent is an agent published in the GitHub repository withkynam/vibecode-pro-max-kit (1,155 stars, last pushed 4mo ago), licensed MIT. It adds 74 tokens to every session and 8,645 once invoked, about $0.0003 per session on Opus 5.5. 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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