vp-spike

vp-spike is a skill for Claude Code, Codex from khamidov17/vpstack. It costs 111 tokens per session (3,446 once invoked), scanned A, original, no licence file.

A tool for running one to three focused experiments that test changes to a system. It reports whether each test was confirmed, refuted, or inconclusive, with changes in the chosen metric.

In plain words
What is it for?
Use it to test a specific hypothesis or compare two or three component replacements, with each result saved in a project spike file.
Why use it?
It helps compare a small number of alternatives without running a large experiment. An ablation experiment checks what changes when one component is removed or swapped.

Skill for Claude CodeCodex

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/khamidov17/vpstack/vp-spike
Any agent
npx skills add khamidov17/vpstack --skill vp-spike
Clone the repo
git clone --depth 1 https://github.com/khamidov17/vpstack

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 vp-spike

README.md
[![agentmods](https://agentmods.dev/badge/skills/khamidov17/vpstack/vp-spike.svg)](https://agentmods.dev/skills/khamidov17/vpstack/vp-spike)
Your own site
<a href="https://agentmods.dev/skills/khamidov17/vpstack/vp-spike"><img src="https://agentmods.dev/badge/skills/khamidov17/vpstack/vp-spike.svg" alt="Measured on agentmods" height="20"></a>
Per session 111 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,446 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00111 $0.03446
Opus 5 $0.00056 $0.01723
Sonnet 5 $0.00022 $0.00689
Haiku 4.5 $0.00011 $0.00345

Measured 4d ago against content hash 37a6c9867258, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

vp-spike 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.

skills/vp-spike/SKILL.md · 312 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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 · 312 lines · 111 tokens per session scan A 37a6c9867258

Subscribe to this mod's changes

vp-spike is a skill published in the GitHub repository khamidov17/vpstack (2 stars, last pushed 4mo ago), with no licence file. It adds 111 tokens to every session and 3,446 once invoked, about $0.0006 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 2026-08-31.

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