speckit.security

speckit.security is a skill for Claude Code, Codex from wedabro/bro-skills. It costs 26 tokens per session (471 once invoked), scanned A, original, MIT.

A security review guide for checking an application’s code, settings, dependencies, and design against common risks listed by OWASP, the Open Worldwide Application Security Project.

In plain words
What is it for?
Use it to review code for issues such as injection and broken access controls, scan for exposed keys and vulnerable dependencies, and model threats in sensitive features.
Why use it?
It helps find vulnerabilities, leaked secrets, unsafe configuration, and risky third-party packages before they cause harm.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

Good fit Use it to review code for issues such as injection and broken access controls, scan for exposed keys and vulnerable dependencies, and model threats in sensitive features.

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Install with agentmods
npx agentmods add skills/wedabro/bro-skills/speckit.security
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 wedabro/bro-skills --skill speckit.security
Clone the repo
git clone --depth 1 https://github.com/wedabro/bro-skills

Made for: Claude Code, Codex.

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 speckit.security

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/wedabro/bro-skills/speckit.security"><img src="https://agentmods.dev/badge/skills/wedabro/bro-skills/speckit.security.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 471 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 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 $0.00026 $0.00471
Opus 5 $0.00013 $0.00235
Sonnet 5 $0.00005 $0.00094
Haiku 4.5 $0.00003 $0.00047

Measured 9d ago against content hash 267cb02b1faf, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

speckit.security 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.

.agents/skills/speckit.security/SKILL.md · 49 lines

What it actually says

🎯 Mission

Ensuring full lifecycle security: auditing code according to OWASP, detecting secret leaks, scanning dependency vulnerabilities, threat modeling for sensitive features.

📥 Input

  • Codebase + .agents/specs/[feature]/spec.md
  • .agents/memory/constitution.md (§2 Security, §3 ENV)
  • Dependency manifest (package.json, requirements.txt...)

📋 Protocol

1. OWASP Top 10 Audit

  • Injection (SQLi/XSS/command), Broken AuthN/AuthZ, SSRF, IDOR.
  • Insecure deserialization, security misconfiguration.
  • Each finding: severity + location + suggested fix.

2. Secret & Config

  • Scan hard-coded secrets/keys/tokens in code + git history.
  • Verify ENV usage according to Constitution §3; .env does not commit.
  • Check .dockerignore , .gitignore block sensitive files.

3. Dependency & Supply Chain

  • Scan for CVE dependencies (npm audit / pip-audit / trivy).
  • Detected package typosquatting / unmaintained.
  • Pin version (DO NOT use open range for sensitive devices).

4. AuthN / AuthZ

  • Verify all sensitive endpoints with authz check (anti-IDOR).
  • Token storage/expiry/rotation correct; rate limiting.

5. Threat Modeling (sensitive features)

  • Light STRIDE: lists assets, attack surface, mitigation.
  • Production hardening: non-root container, minimum port.

📤 Output

  • Security report: findings (severity), remediation, residual risk.
  • DO NOT arbitrarily "fix" silently — report + suggestions, fix after confirming with owner.

🚫 Guard Rails

  • DO NOT echo the secret value in the response (key name + location only).
  • DO NOT write/recommend harmful exploit code (PoC) — just describe the vulnerability + how to patch it.
  • DO NOT ignore serious finding even if it affects progress.
  • DO NOT send code/secret to third party endpoint.
  • Use the language configured by the project or requested by the user.
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. 9d ago First seen · 49 lines · 26 tokens per session scan A 267cb02b1faf

Subscribe to this mod's changes

speckit.security is a skill published in the GitHub repository wedabro/bro-skills (2 stars, last pushed 13d ago), licensed MIT. It adds 26 tokens to every session and 471 once invoked, about $0.0001 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.