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 agentmods add skills/uziii2208/mcp2agy/exploitnpx skills add uziii2208/mcp2agy --skill exploitgit clone --depth 1 https://github.com/uziii2208/mcp2agyWhat 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 | $0.00087 | $0.01024 |
| Opus 5 | $0.00044 | $0.00512 |
| Sonnet 5 | $0.00017 | $0.00205 |
| Haiku 4.5 | $0.00009 | $0.00102 |
Grade A, and why
mcp2agy-exploit 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 yesterday.
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 — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.
/exploit — Exploit Development & Weaponization Engine (v3.0.0)
0. Prime Directive & Operating Model
The Exploit engine turns verified vulnerabilities and security primitives into working, deterministic exploit scripts:
┌───────────────────────────────────┐
│ Exploit Orchestrator (/exploit) │
└─────────────────┬─────────────────┘
│
┌───────────────────┬───────────┴───────────┬───────────────────┐
▼ ▼ ▼ ▼
┌───────────────┐ ┌───────────────┐ ┌───────────────┐ ┌───────────────┐
│ Memory Corrupt│ │ Web & API Bug │ │ Logic & Auth │ │ Exploit Chain │
│ (pwntools/ROP)│ │ (SSRF/SSTI/..)│ │ (Race/PrivEsc)│ │ Assembler │
└───────────────┘ └───────────────┘ └───────────────┘ └───────────────┘
│ │ │ │
└───────────────────┴───────────┬───────────┴───────────────────┘
▼
mcp2agy_workspace/exploits/
├── pocs/<target>_<cwe>.py
├── payloads/
└── chains/<chain_id>_full_rce.py
1. Exploit Categories & Tooling
1.1 Memory Corruption Exploitation
- Stack & Heap Exploits: Buffer overflows, heap chunk consolidation, fastbin/tcache poisoning, Use-After-Free (UAF).
- Modern Mitigations: ASLR defeat via info leak, DEP/NX bypass via ROP/JOP gadget chains, Stack Canary bypass.
- Tools:
pwntools,angr,z3-solver, GDB withpwndbg/gef.
1.2 Web & Application Layer Exploits
- Command & Code Injection: Shell escape breakout, argument injection, double-quoted context differentials (
_pde). - Server-Side Template Injection (SSTI): Jinja2, Mako, FreeMarker, Pug, Handlebars sandboxed environment escapes.
- SSRF to Cloud Metadata: AWS IMDSv1/v2, GCP metadata headers, internal Kubernetes service tokens.
- Insecure Deserialization: Java
ysoserialchains (CommonsCollections, Spring), Pythonpickle/yamlgadgets, PHP object injection.
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.
- yesterday First seen · 84 lines · 87 tokens per session scan A cbfbe38eae82
mcp2agy-exploit is a skill published in the GitHub repository uziii2208/mcp2agy (1 stars, last pushed 2d ago), licensed MIT. It adds 87 tokens to every session and 1,024 once invoked, about $0.0004 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 2026-08-31.
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