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 c2-slivergit 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/c2-sliver)<a href="https://agentmods.dev/skills/mingyiseclab/mingyi-atlas/c2-sliver"><img src="https://agentmods.dev/badge/skills/mingyiseclab/mingyi-atlas/c2-sliver/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/c2-sliver"><img src="https://agentmods.dev/badge/skills/mingyiseclab/mingyi-atlas/c2-sliver.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 | $0.00038 | $0.03405 |
| Opus 5 | $0.00019 | $0.01702 |
| Sonnet 5 | $0.00008 | $0.00681 |
| Haiku 4.5 | $0.00004 | $0.00341 |
Grade A, and why
c2-sliver 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 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.
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.
How it starts
The opening of the file, as written. The whole thing — 411 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Sliver C2 Framework
Sliver is an open-source, cross-platform adversary emulation framework by BishopFox. It supports beacon (async) and session (interactive) implants over mTLS, HTTPS, DNS, and WireGuard channels with multi-operator support.
Atlas Setup
Server:
c2-slivercontainer onsandbox-net(daemon mode, gRPC on port 31337) Client:sliver-clientpre-installed in sandbox Config: Auto-generated operator config at/workspace/.sliver-configs/atlas.cfgConnection Procedure (via bash tool)
# 1. Verify C2 reachable bash(command="nc -z c2-sliver 31337 && echo 'C2_OK' || echo 'C2_DOWN'") # 2. Import operator config (once — skip if already imported) bash(command="ls ~/.sliver-client/configs/ 2>/dev/null | grep -q . || sliver-client import /workspace/.sliver-configs/atlas.cfg") # 3. Start interactive console in dedicated tmux session bash(command="sliver-client console", session="c2") # 4. Run Sliver commands interactively bash(command="https --lhost 0.0.0.0 --lport 443 --domain c2-sliver", is_input=True, session="c2") bash(command="sessions", is_input=True, session="c2")IMPORTANT:
- Do NOT generate operator configs manually — use the pre-generated one at
/workspace/.sliver-configs/atlas.cfg- Do NOT start
sliver-serverin sandbox — the server runs in its own containersliver-client consoleis interactive — MUST use a dedicated session (e.g.session="c2") and send subsequent commands withis_input=True- If "multiple configs found":
bash(command="sliver-client console --config ~/.sliver-client/configs/atlas_c2-sliver.cfg", session="c2")
1. Listener Configuration
All commands below run inside the Sliver console (
session="c2",is_input=True).
HTTPS Listener
# Basic HTTPS listener on 443
https --lhost 0.0.0.0 --lport 443 --domain c2-sliver
# HTTPS with custom certificate (better OPSEC)
https --lhost 0.0.0.0 --lport 443 --domain c2-sliver \
--cert /workspace/certs/cert.pem \
--key /workspace/certs/key.pem
# HTTPS with Let's Encrypt (requires DNS control)
https --lhost 0.0.0.0 --lport 443 --domain c2-sliver --lets-encrypt
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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 · 411 lines · 38 tokens per session scan A 4d7ff4165c67
c2-sliver is a skill published in the GitHub repository MingyiSecLab/Mingyi-Atlas (11 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 38 tokens to every session and 3,405 once invoked, about $0.0002 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 2026-09-03.
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