vc-fast-mode-agent

vc-fast-mode-agent is an agent for Claude Code from withkynam/vibecode-pro-max-kit. It costs 51 tokens per session (6,011 once invoked), scanned A, original, MIT.

A fast mode for a structured software-development workflow that combines research, requirements, idea generation, planning, and validation in one session. It pauses before implementation so the proposed work can be approved.

In plain words
What is it for?
Use it for quick end-to-end investigation and planning of a software change, including a clarified task, specification, possible approaches, implementation plan, and validation steps.
Why use it?
It shortens the planning cycle while retaining the project's required checks and handoff rules. It is intended only when the user explicitly enters fast mode.

Agent for Claude Code

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 · 1,115 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 agents/withkynam/vibecode-pro-max-kit/vc-fast-mode-agent
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-fast-mode-agent

README.md
[![agentmods](https://agentmods.dev/badge/agents/withkynam/vibecode-pro-max-kit/vc-fast-mode-agent.svg)](https://agentmods.dev/agents/withkynam/vibecode-pro-max-kit/vc-fast-mode-agent)
Your own site
<a href="https://agentmods.dev/agents/withkynam/vibecode-pro-max-kit/vc-fast-mode-agent"><img src="https://agentmods.dev/badge/agents/withkynam/vibecode-pro-max-kit/vc-fast-mode-agent.svg" alt="Measured on agentmods" height="20"></a>
Per session 51 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 6,011 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 $0.06011
Opus 5 $0.00026 $0.03005
Sonnet 5 $0.00010 $0.01202
Haiku 4.5 $0.00005 $0.00601

Measured 5d ago against content hash 445ccbde3e57, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

vc-fast-mode-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 5d 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-fast-mode-agent.md · 480 lines

How it starts

The opening of the file, as written. The whole thing — 480 lines — stays where its author put it; the contents beside it link to each section on GitHub.

[MODE: FAST]

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

Purpose

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

Combining RESEARCH + SPEC + INNOVATE + PLAN + VALIDATE in compressed timeframe, with mandatory pause before EXECUTE implementation.

FAST mode is a compressed worker flow, not a separate orchestrator. It must still respect repo routing, selected-plan handoff rules, feature-scoped storage, and the same approval gates as the normal RIPER path.

Entry Requirement

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

Required Workflow

YOU MUST follow structured thinking process internally and include ALL steps in response:

[RESEARCH]

Step 0 — invoke vc-intent-clarify (Tier 0, REQUIRED FIRST): Restate the task received from the orchestrator. If the orchestrator already ran intent-clarify and passed a clarified intent, emit a 1-sentence confirmation: "Proceeding with: [scope]" and auto-proceed. Do not re-ask questions already answered.

First action — context and plan discovery (joint):

Invoke vc-context-discovery as the very first action before reading any file:

  • Load process/context/all-context.md and follow its routing table to the smallest relevant context group files.
  • When verification, test, or runtime checks are part of the task, follow the routing chain: process/context/tests/all-tests.md → relevant deeper file (e.g. container-e2e.md) before proposing steps.

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.

Second action — branch and plan status:

Invoke vc-review-situation to get current branch, local/remote ref status, active-plan handoff summary, and advisory selected-plan hints before proceeding.

Read the full file on GitHub · 480 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. 5d ago First seen · 480 lines · 51 tokens per session scan A 445ccbde3e57

Subscribe to this mod's changes

vc-fast-mode-agent is an agent published in the GitHub repository withkynam/vibecode-pro-max-kit (1,115 stars, last pushed 2mo ago), licensed MIT. It adds 51 tokens to every session and 6,011 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.