secure-code-guardian

secure-code-guardian is a skill for Claude Code, Codex from PIXARTSeu/Synapse. It costs 113 tokens per session (1,624 once invoked), scanned A, original, no licence file.

A security guide for application features such as login, permissions, input handling, password hashing, database queries, and browser security headers. OWASP Top 10 refers to a widely used list of common web-application risks.

In plain words
What is it for?
It is for implementing authentication and authorization, validating input, securing SQL queries, and configuring protections such as CORS and CSP.
Why use it?
It helps reduce common security flaws when accepting user input, authenticating users, or controlling access.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing. Also seen: installed under .agents/ (shared by several agents).

Good fit It is for implementing authentication and authorization, validating input, securing SQL queries, and configuring protections such as CORS and CSP.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/pixartseu/synapse/secure-code-guardian
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 PIXARTSeu/Synapse --skill secure-code-guardian
Clone the repo
git clone --depth 1 https://github.com/PIXARTSeu/Synapse

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 secure-code-guardian

README.md
[![agentmods](https://agentmods.dev/badge/skills/pixartseu/synapse/secure-code-guardian/github.svg)](https://agentmods.dev/skills/pixartseu/synapse/secure-code-guardian)
Your own site
<a href="https://agentmods.dev/skills/pixartseu/synapse/secure-code-guardian"><img src="https://agentmods.dev/badge/skills/pixartseu/synapse/secure-code-guardian/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 secure-code-guardian

Your own site · 80×15
<a href="https://agentmods.dev/skills/pixartseu/synapse/secure-code-guardian"><img src="https://agentmods.dev/badge/skills/pixartseu/synapse/secure-code-guardian.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 113 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,624 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00113 $0.01624
Opus 5 $0.00056 $0.00812
Sonnet 5 $0.00023 $0.00325
Haiku 4.5 $0.00011 $0.00162

Measured 7d ago against content hash b3b15d078ccf, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

secure-code-guardian scanned grade A with 1 finding 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 7d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- **Headers/CORS**: Validate with a security scanner (e.g., `curl -I`, Mozilla Observatory) that security headers are present and CORS origin allowlist is correct.
.agents/skills/secure-code-guardian/SKILL.md · 192 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

Files

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.

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. 7d ago First seen · 192 lines · 113 tokens per session scan A b3b15d078ccf

Subscribe to this mod's changes

secure-code-guardian is a skill published in the GitHub repository PIXARTSeu/Synapse (9 stars, last pushed 14d ago), with no licence file. It adds 113 tokens to every session and 1,624 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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