vcf

vcf is a skill for Codex from kks0488/vibe-codex. It costs 29 tokens per session (88 once invoked), scanned A, original, MIT.

A short alias for the Vibe Codex phase-loop workflow, which carries out a bounded task from start to finish with checks afterward.

In plain words
What is it for?
Use it when you explicitly invoke `$vcf` for an end-to-end task that needs controlled execution and verification.
Why use it?
It provides a compact way to invoke that existing workflow while retaining its limits, safety rules, and verification steps.

Skill for Codex

Written for Codex: agents/openai.yaml present.

Good fit Use it when you explicitly invoke $vcf for an end-to-end task that needs controlled execution and verification.

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Install with agentmods
npx agentmods add skills/kks0488/vibe-codex/vcf
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.

Any agent
npx skills add kks0488/vibe-codex --skill vcf
Clone the repo
git clone --depth 1 https://github.com/kks0488/vibe-codex

Made for: 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 vcf

README.md
[![agentmods](https://agentmods.dev/badge/skills/kks0488/vibe-codex/vcf/github.svg)](https://agentmods.dev/skills/kks0488/vibe-codex/vcf)
Your own site
<a href="https://agentmods.dev/skills/kks0488/vibe-codex/vcf"><img src="https://agentmods.dev/badge/skills/kks0488/vibe-codex/vcf/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 vcf

Your own site · 80×15
<a href="https://agentmods.dev/skills/kks0488/vibe-codex/vcf"><img src="https://agentmods.dev/badge/skills/kks0488/vibe-codex/vcf.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 88 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 $0.00029 $0.00088
Opus 5.5 $0.00012 $0.00035
Sonnet 5.5 $0.00006 $0.00018
Haiku 4.5 $0.00003 $0.00009

Measured 2mo ago against content hash 9ff706e8be1f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

vcf 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 2mo 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.

skills/vcf/SKILL.md · 12 lines

What it actually says

VCF

Read and follow vc-phase-loop. Preserve its scope, safety, bounded recovery, verification, and truthful blocker rules. The alias does not grant additional authority.

Files

What ships with it

2 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. 2mo ago First seen · 12 lines · 29 tokens per session scan A 9ff706e8be1f

Subscribe to this mod's changes

vcf is a skill published in the GitHub repository kks0488/vibe-codex (11 stars, last pushed 20d ago), licensed MIT. It adds 29 tokens to every session and 88 once invoked, about $0.0001 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.