security-snapshot

security-snapshot is a skill for Claude Code from mycelium-hq/ai-brain-starter. It costs 98 tokens per session (1,590 once invoked), scanned A, original, MIT.

A generator for a security report about a company’s public website and email setup. It checks areas such as encrypted connections, website security settings, email authentication, and exposed server details.

In plain words
What is it for?
Use it to create a security snapshot for a company domain, prospect, or lead, including findings that can guide follow-up security work.
Why use it?
It gives a quick view of publicly visible security weaknesses before committing to a full security audit.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter. Also seen: positional $N argument.

Part of the ai-brain-starter plugin — 38 skills, 17 commands, 3 agents, 1 hook shipped together

Good fit Use it to create a security snapshot for a company domain, prospect, or lead, including findings that can guide follow-up security work.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mycelium-hq/ai-brain-starter/security-snapshot
Install

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.

Any agent
npx skills add mycelium-hq/ai-brain-starter --skill security-snapshot
Clone the repo
git clone --depth 1 https://github.com/mycelium-hq/ai-brain-starter

Made for: Claude Code.

Or install ai-brain-starter, the plugin that ships this one along with the rest of its 38 skills, 17 commands, 3 agents, 1 hook.

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-snapshot

README.md
[![agentmods](https://agentmods.dev/badge/skills/mycelium-hq/ai-brain-starter/security-snapshot/github.svg)](https://agentmods.dev/skills/mycelium-hq/ai-brain-starter/security-snapshot)
Your own site
<a href="https://agentmods.dev/skills/mycelium-hq/ai-brain-starter/security-snapshot"><img src="https://agentmods.dev/badge/skills/mycelium-hq/ai-brain-starter/security-snapshot/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-snapshot

Your own site · 80×15
<a href="https://agentmods.dev/skills/mycelium-hq/ai-brain-starter/security-snapshot"><img src="https://agentmods.dev/badge/skills/mycelium-hq/ai-brain-starter/security-snapshot.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 98 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,590 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original 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 $0.00098 $0.01590
Opus 5 $0.00049 $0.00795
Sonnet 5 $0.00020 $0.00318
Haiku 4.5 $0.00010 $0.00159

Measured 11d ago against content hash d3da6beea66e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

security-snapshot 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 11d 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.

skills/security-snapshot/SKILL.md · 110 lines

How it starts

The opening of the file, as written. The whole thing — 110 lines — stays where its author put it; the contents beside it link to each section on GitHub.

{SKILL_DIR} = this skill's own folder (locally: the directory this SKILL.md lives in; a served brain substitutes the real absolute path before you read this). Shared starter files live at the repo root two levels up: {SKILL_DIR}/../... If a path does not resolve, name the missing file and stop — never guess another location.

When the user types /security-snapshot [domain] or asks for a security check on a prospect, run the security snapshot generator and deliver a client-ready report.

Why this skill exists

Prospects rarely have budget for a full security audit upfront, but they will read a free one-page report that exposes real issues with their public-facing setup. This skill generates that report in under 3 minutes and opens the door for a paid follow-up on security work, AI implementation, or adjacent consulting.

Command

python3 "{SKILL_DIR}/../../scripts/security-snapshot.py" <domain> --company "<Display Name>"

The script ships with the starter repo. Output goes to $SNAPSHOTS_DIR if set, otherwise $VAULT_ROOT/security-snapshots/ if VAULT_ROOT is set, otherwise a security-snapshots/ folder next to wherever you run the command from. It takes 60-180 seconds because SSL Labs is slow. The script prints the saved report path to stdout and progress to stderr.

Workflow

  1. Get the domain. If the user only gave a company name, ask for the domain (e.g., "Is it acme.com or acmecorp.com?"). Do not guess.
  2. Run the script. Use Bash with a long timeout (180000ms) because SSL Labs polling is slow.
  3. Read the output. The script saves to $SNAPSHOTS_DIR/<domain>/<YYYY-MM-DD>-snapshot.md (defaults to $VAULT_ROOT/security-snapshots/ when SNAPSHOTS_DIR is unset). Read the file before summarizing.
  4. Summarize for the user. Do NOT dump the full report into chat. Give:
    • Top 3 findings by severity with one-line reasons
    • SSL grade
    • Whether SPF + DMARC are both present
    • Path to the saved report
  5. Offer the follow-up. If there are high or critical findings, offer to draft the outreach email that pairs with the report. Match the user's own outreach voice, do not invent a new one.

Read the full file on GitHub · 110 lines

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. 11d ago First seen · 110 lines · 98 tokens per session scan A d3da6beea66e

Subscribe to this mod's changes

security-snapshot is a skill published in the GitHub repository mycelium-hq/ai-brain-starter (36 stars, last pushed today), licensed MIT. It adds 98 tokens to every session and 1,590 once invoked, about $0.0005 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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