prove-it-works

prove-it-works is a skill for Claude Code from ooloth/dotfiles. It costs 36 tokens per session (865 once invoked), scanned B, original, no licence file.

A verification helper that examines observable parts of a system, runs the real system, records evidence, and points out gaps.

In plain words
What is it for?
Use it to prove a change works, inspect user-visible or system paths, or create a quality-assurance test plan.
Why use it?
It helps reveal whether a change works in practice and which important paths have not been checked.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter.

Good fit Use it to prove a change works, inspect user-visible or system paths, or create a quality-assurance test plan.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ooloth/dotfiles/prove-it-works
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 ooloth/dotfiles --skill prove-it-works
Clone the repo
git clone --depth 1 https://github.com/ooloth/dotfiles

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 prove-it-works

README.md
[![agentmods](https://agentmods.dev/badge/skills/ooloth/dotfiles/prove-it-works/github.svg)](https://agentmods.dev/skills/ooloth/dotfiles/prove-it-works)
Your own site
<a href="https://agentmods.dev/skills/ooloth/dotfiles/prove-it-works"><img src="https://agentmods.dev/badge/skills/ooloth/dotfiles/prove-it-works/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 prove-it-works

Your own site · 80×15
<a href="https://agentmods.dev/skills/ooloth/dotfiles/prove-it-works"><img src="https://agentmods.dev/badge/skills/ooloth/dotfiles/prove-it-works.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 865 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00036 $0.00865
Opus 5.5 $0.00014 $0.00346
Sonnet 5.5 $0.00007 $0.00173
Haiku 4.5 $0.00004 $0.00086

Measured 17d ago against content hash 94a7f23854b5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

prove-it-works scanned grade B with 2 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 17d 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.

Sends data to an external URLmediumData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

| Invalid input | ✅ | `curl -X POST /api/foo -d '{}'` → 400 response with expected error body | |

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

| Invalid input | ✅ | `curl -X POST /api/foo -d '{}'` → 400 response with expected error body | |
tools/agents/config/skills/prove-it-works/SKILL.md · 83 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

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. 17d ago Changed · +7 lines 94a7f23854b5
  2. 1mo ago First seen · 76 lines · 36 tokens per session scan B c2353018dffe

Subscribe to this mod's changes

prove-it-works is a skill published in the GitHub repository ooloth/dotfiles (24 stars, last pushed today), with no licence file. It adds 36 tokens to every session and 865 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it B with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.