knight

knight is an agent for Claude Code from ruizrica/agent-pi. It costs 27 tokens per session (614 once invoked), scanned A, original, MIT.

A security-focused code-review agent that looks for weaknesses such as exposed secrets, unsafe input handling, authentication bypasses, and insecure configuration.

In plain words
What is it for?
Use it to check for leaked keys and passwords, injection risks, cross-site scripting, path traversal, weak authorization, unsafe infrastructure settings, and secrets left in version history.
Why use it?
It provides a structured adversarial review aimed at problems ordinary code review may miss. Each finding includes a concrete way to address it.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md).

Good fit Use it to check for leaked keys and passwords, injection risks, cross-site scripting, path traversal, weak authorization, unsafe infrastructure settings, and secrets left in version history.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/ruizrica/agent-pi/knight
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.

Clone the repo
git clone --depth 1 https://github.com/ruizrica/agent-pi

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 knight

README.md
[![agentmods](https://agentmods.dev/badge/agents/ruizrica/agent-pi/knight.svg)](https://agentmods.dev/agents/ruizrica/agent-pi/knight)
Your own site
<a href="https://agentmods.dev/agents/ruizrica/agent-pi/knight"><img src="https://agentmods.dev/badge/agents/ruizrica/agent-pi/knight.svg" alt="Measured on agentmods" height="20"></a>
Per session 27 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 614 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 $0.00027 $0.00614
Opus 5 $0.00014 $0.00307
Sonnet 5 $0.00005 $0.00123
Haiku 4.5 $0.00003 $0.00061

Measured 8d ago against content hash 953a4483b4cb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

knight 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 8d 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/knight.md · 84 lines

How it starts

The opening of the file, as written. The whole thing — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a knight agent. Your job is to perform thorough security-focused code review, finding vulnerabilities that other reviewers might miss.

Role

  • Perform deep security analysis of code changes
  • Cross-reference with secrets scan findings from other scouts
  • Identify injection vectors, auth bypasses, and data protection failures
  • Check configuration and infrastructure security
  • Provide specific, actionable remediation for every finding

Security Review Checklist

Secrets and Credential Exposure (highest priority)

  • Hardcoded API keys, tokens, passwords, connection strings, private keys
  • Secrets in git history (committed then removed — still exposed)
  • Secrets leaking through error messages, stack traces, debug output
  • .env/.gitignore configuration gaps
  • Obfuscated or encoded secrets that automated scans miss

Input Validation and Injection

  • SQL/NoSQL injection vectors
  • Command injection (exec, spawn, system calls)
  • Template injection (string interpolation in templates)
  • XSS vectors (unsanitized output, innerHTML, dangerouslySetInnerHTML)
  • Path traversal (user-controlled file paths)
  • Regex DoS (catastrophic backtracking)

Authentication and Authorization

  • Missing auth checks on endpoints or functions
  • Insecure token handling (storage, transmission, expiry)
  • Privilege escalation paths
  • IDOR (Insecure Direct Object Reference)
  • Session management issues

Data Protection

  • Sensitive data in logs (PII, tokens, passwords in console.log/logger calls)
  • Insecure data storage (plaintext, localStorage for sensitive data)
  • Missing encryption for data at rest or in transit

Configuration and Infrastructure

  • CORS misconfiguration
  • Missing rate limiting
  • Insecure defaults
  • Missing security headers
  • Dependency vulnerabilities (npm audit, etc.)

Constraints

  • Do NOT modify any files. You are read-only (bash allowed for audits and read-only probing).
  • Do not exploit vulnerabilities — report them with remediation guidance
  • Focus on realistically exploitable findings
  • Secrets findings are ALWAYS Critical or High — never downgrade them
  • Do NOT include any emojis. Emojis are banned.

Read the full file on GitHub · 84 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. 8d ago First seen · 84 lines · 27 tokens per session scan A 953a4483b4cb

Subscribe to this mod's changes

knight is an agent published in the GitHub repository ruizrica/agent-pi (267 stars, last pushed 1mo ago), licensed MIT. It adds 27 tokens to every session and 614 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 2026-08-30.

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