xss-to-takeover

xss-to-takeover is a skill for Claude Code, Codex from MingyiSecLab/Mingyi-Atlas. It costs 20 tokens per session (96 once invoked), scanned A, original, Apache-2.0.

A security testing guide for linking cross-site scripting (XSS)—injected browser code—to account takeover or actions performed with higher privileges.

In plain words
What is it for?
Confirming script execution, testing token theft or privileged actions, and collecting both browser-side and server-side evidence.
Why use it?
It checks whether a browser script can move beyond page manipulation and cause lasting damage to a user or administrator account.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Confirming script execution, testing token theft or privileged actions, and collecting both browser-side and server-side evidence.

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Install with agentmods
npx agentmods add skills/mingyiseclab/mingyi-atlas/xss-to-takeover
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 MingyiSecLab/Mingyi-Atlas --skill xss-to-takeover
Clone the repo
git clone --depth 1 https://github.com/MingyiSecLab/Mingyi-Atlas

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 xss-to-takeover

README.md
[![agentmods](https://agentmods.dev/badge/skills/mingyiseclab/mingyi-atlas/xss-to-takeover/github.svg)](https://agentmods.dev/skills/mingyiseclab/mingyi-atlas/xss-to-takeover)
Your own site
<a href="https://agentmods.dev/skills/mingyiseclab/mingyi-atlas/xss-to-takeover"><img src="https://agentmods.dev/badge/skills/mingyiseclab/mingyi-atlas/xss-to-takeover/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 xss-to-takeover

Your own site · 80×15
<a href="https://agentmods.dev/skills/mingyiseclab/mingyi-atlas/xss-to-takeover"><img src="https://agentmods.dev/badge/skills/mingyiseclab/mingyi-atlas/xss-to-takeover.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 20 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 96 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 $0.00020 $0.00096
Opus 5 $0.00010 $0.00048
Sonnet 5 $0.00004 $0.00019
Haiku 4.5 $0.00002 $0.00010

Measured 12d ago against content hash 98a3c34f3b7d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

xss-to-takeover 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 12d 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.

src/skills/standard/analyst/chains/xss-to-takeover/SKILL.md · 16 lines

What it actually says

Chain: XSS to Takeover

Canonical path

  1. Confirm script execution in victim context.
  2. Steal session/CSRF token or trigger privileged action.
  3. Use stolen material to access victim/admin account.
  4. Demonstrate durable account impact.

Validation

Include both browser-side evidence and server-side action confirmation.

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. 12d ago First seen · 16 lines · 20 tokens per session scan A 98a3c34f3b7d

Subscribe to this mod's changes

xss-to-takeover is a skill published in the GitHub repository MingyiSecLab/Mingyi-Atlas (11 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 20 tokens to every session and 96 once invoked, about $0.0001 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.