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 Miosa-osa/OSA --skill offensive-mitigationsgit clone --depth 1 https://github.com/Miosa-osa/OSAWrote 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/miosa-osa/osa/offensive-mitigations)<a href="https://agentmods.dev/skills/miosa-osa/osa/offensive-mitigations"><img src="https://agentmods.dev/badge/skills/miosa-osa/osa/offensive-mitigations/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/miosa-osa/osa/offensive-mitigations"><img src="https://agentmods.dev/badge/skills/miosa-osa/osa/offensive-mitigations.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 | $0.00061 | $0.00507 |
| Opus 5.5 | $0.00024 | $0.00203 |
| Sonnet 5.5 | $0.00012 | $0.00101 |
| Haiku 4.5 | $0.00006 | $0.00051 |
Grade A, and why
offensive-mitigations 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 1mo 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.
What it actually says
SKILL: Modern Kernel Exploit Mitigations
Metadata
- Skill Name: security-mitigations
- Folder: offensive-mitigations
- Source: https://github.com/SnailSploit/offensive-checklist/blob/main/mitigations.md
Description
Security mitigation reference and bypass catalog: ASLR, DEP/NX, RELRO, stack canaries, CFI, sandboxing, seccomp. Covers both detection of enabled mitigations and known bypass techniques. Use when assessing target hardening or planning exploit mitigation bypasses.
Trigger Phrases
Use this skill when the conversation involves any of:
mitigations, ASLR bypass, DEP bypass, NX bypass, RELRO, stack canary bypass, CFI bypass, sandbox bypass, seccomp bypass, mitigation detection, checksec
Methodology references
Read the relevant sections below before following a technique. Read them in order for the complete original methodology. Confirm the target and testing scope with the user before performing any active checks.
- Full Methodology — part 1; consult for this stage and its examples.
- Bypass Techniques — part 2; consult for this stage and its examples.
- Shadow Call Stack (SCS) — part 3; consult for this stage and its examples.
- Practitioner — part 4; consult for this stage and its examples.
What ships with it
5 files 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.
- 1mo ago Changed · -972 lines 71f15433f105
- 1mo ago First seen · 1,023 lines · 61 tokens per session scan A 348340bdeab7
offensive-mitigations is a skill published in the GitHub repository Miosa-osa/OSA (78 stars, last pushed 11d ago), licensed Apache-2.0. It adds 61 tokens to every session and 507 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-09-14.
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