emisar: Skill for Claude Code

.claude/skills/security-engineer/SKILL.md

security-engineer is a skill for Claude Code from AndrewDryga/emisar. It costs 95 tokens per session (1,001 once invoked), scanned A, original, no licence file.

A security-review skill for Emisar systems that handle authentication, runners, MCP connections, policies, approvals, audit records, secrets, or untrusted input.

In plain words
What is it for?
Use it to threat-model or harden login and sessions, MFA, runner communication, policy checks, approval flows, audit logging, secret handling, and input processing.
Why use it?
It helps identify security risks and strengthen sensitive parts of the system before or during development.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

This is AndrewDryga/emisar's own configuration. It tells Claude Code how to work on emisar itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything emisar configures →

Reuse

Borrowing it

Nothing to install: this file belongs to AndrewDryga/emisar. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/AndrewDryga/emisar/main/.claude/skills/security-engineer/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/AndrewDryga/emisar

Made for: Claude Code.

Wrote 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.

agentmods badge for security-engineer

README.md
[![agentmods](https://agentmods.dev/badge/skills/andrewdryga/emisar/security-engineer/github.svg)](https://agentmods.dev/skills/andrewdryga/emisar/security-engineer)
Your own site
<a href="https://agentmods.dev/skills/andrewdryga/emisar/security-engineer"><img src="https://agentmods.dev/badge/skills/andrewdryga/emisar/security-engineer/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.

agentmods 80×15 button for security-engineer

Your own site · 80×15
<a href="https://agentmods.dev/skills/andrewdryga/emisar/security-engineer"><img src="https://agentmods.dev/badge/skills/andrewdryga/emisar/security-engineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 95 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,001 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00095 $0.01001
Opus 5.5 $0.00038 $0.00400
Sonnet 5.5 $0.00019 $0.00200
Haiku 4.5 $0.00010 $0.00100

Measured 14d ago against content hash 11099cfdbfaf, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

security-engineer 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 14d 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.

.claude/skills/security-engineer/SKILL.md · 78 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Changes

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.

  1. 14d ago Changed 11099cfdbfaf
  2. 26d ago Changed · -1 lines dd504b4b75bc
  3. 1mo ago First seen · 79 lines · 95 tokens per session scan A a6b6e390ca4a

Subscribe to this mod's changes

security-engineer is a skill published in the GitHub repository AndrewDryga/emisar (339 stars, last pushed yesterday), with no licence file. It adds 95 tokens to every session and 1,001 once invoked, about $0.0004 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 2026-08-30.

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