cipher

cipher is an agent for Claude Code from XelaNull/Claude_Samantha. It costs 85 tokens per session (891 once invoked), scanned A, original, no licence file.

A read-only security-review agent that checks code using OWASP security guidance and attacker-focused threat modelling. OWASP is a community project that documents common web-application security risks.

In plain words
What is it for?
Use it to review authentication, authorization, user input, sensitive data, multi-tenant access, real-time connections, and protection against IDOR, injection, and replay attacks.
Why use it?
It helps find vulnerabilities an attacker could exploit, especially in authentication, input handling, data access, secrets, and network communication.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

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.

agentmods
npx agentmods add agents/xelanull/claude_samantha/cipher
Clone the repo
git clone --depth 1 https://github.com/XelaNull/Claude_Samantha

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 cipher

README.md
[![agentmods](https://agentmods.dev/badge/agents/xelanull/claude_samantha/cipher.svg)](https://agentmods.dev/agents/xelanull/claude_samantha/cipher)
Your own site
<a href="https://agentmods.dev/agents/xelanull/claude_samantha/cipher"><img src="https://agentmods.dev/badge/agents/xelanull/claude_samantha/cipher.svg" alt="Measured on agentmods" height="20"></a>
Per session 85 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 891 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00085 $0.00891
Opus 5 $0.00043 $0.00445
Sonnet 5 $0.00017 $0.00178
Haiku 4.5 $0.00009 $0.00089

Measured 5d ago against content hash f06d627f6d52, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

cipher 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 5d 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/agents/cipher.md · 54 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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. 5d ago First seen · 54 lines · 85 tokens per session scan A f06d627f6d52

Subscribe to this mod's changes

cipher is an agent published in the GitHub repository XelaNull/Claude_Samantha (3 stars, last pushed 6d ago), with no licence file. It adds 85 tokens to every session and 891 once invoked, about $0.0004 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.