hacking-buddy-mcp: Instructions file for Codex

AGENTS.md

hacking-buddy-mcp AGENTS.md is an instructions file for Codex, OpenCode from ManuelBerrueta/hacking-buddy-mcp. It costs 410 tokens per session, scanned A, original, Apache-2.0.

Project guidance for Hacking Buddy MCP, a proof-of-concept toolkit for security testing and reconnaissance. It explains how its Python tools work, including DNS record lookups.

In plain words
What is it for?
Use it when changing the MCP server, adding tools, documenting functions, or working with DNS, network, database, or Kubernetes command-line utilities.
Why use it?
It helps a coding agent understand the project structure and safely add or modify its security tools.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md.

This is ManuelBerrueta/hacking-buddy-mcp's own configuration. It tells Codex and OpenCode how to work on hacking-buddy-mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything hacking-buddy-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to ManuelBerrueta/hacking-buddy-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/ManuelBerrueta/hacking-buddy-mcp/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/ManuelBerrueta/hacking-buddy-mcp

Made for: Codex, OpenCode.

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 hacking-buddy-mcp AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/manuelberrueta/hacking-buddy-mcp/agents-md.svg)](https://agentmods.dev/instructions/manuelberrueta/hacking-buddy-mcp/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/manuelberrueta/hacking-buddy-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/manuelberrueta/hacking-buddy-mcp/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 410 This file is loaded in full into every session.
When invoked 410 The same file — it is already loaded in full.
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 $0.00410 $0.00410
Opus 5 $0.00205 $0.00205
Sonnet 5 $0.00082 $0.00082
Haiku 4.5 $0.00041 $0.00041

Measured 7d ago against content hash 0c16268ebfc8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

hacking-buddy-mcp AGENTS.md 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 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.

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.md · 39 lines

What it actually says

AGENTS.MD

Project Overview

Hacking Buddy MCP is a proof-of-concept AI-powered toolkit for Red Team and Pentesting workflows. It integrates with the FastMCP framework to provide automated security tools for reconnaissance, exploitation, and analysis.

How the Project Works

  • The main entry point is hacking-buddy-src/hacking-buddy.py.
  • Tools are defined as Python functions decorated with @mcp.tool().
  • Each tool typically takes a target argument and returns output as a string.
  • Tools leverage external command-line utilities (e.g., nmap, sqlmap, kubectl) or Python libraries (e.g., dnspython).
  • The MCP agent is started by running the script directly.

Adding or Modifying Tools

  • Define a new function with the @mcp.tool() decorator.
  • Implement the tool logic (call subprocesses or use Python libraries).
  • Add a docstring describing the tool’s purpose and usage.
  • Register the tool by ensuring it is imported and decorated.
  • For DNS-related tools, use the dnspython library for record lookups.

Example Tool: DNS Information

  • The check_dns_info(target) tool queries A, AAAA, MX, and TXT DNS records for a target.
  • It determines if the host is publicly available by checking for A records.
  • Output is a summary of DNS records and public status.

Setup

  • Use uv for dependency management and virtual environments.
  • Install dependencies with uv pip install -r pyproject.toml.
  • Ensure fastmcp and any required libraries (e.g., dnspython) are installed.

Next Steps

  • When given a task, analyze the tool structure in hacking-buddy.py.
  • Add or modify tools as needed, following the established pattern.
  • Ensure new tools are registered and tested via the MCP interface.
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 · 39 lines · 410 tokens per session scan A 0c16268ebfc8

Subscribe to this mod's changes

hacking-buddy-mcp AGENTS.md is an instructions file published in the GitHub repository ManuelBerrueta/hacking-buddy-mcp (5 stars, last pushed 1y ago), licensed Apache-2.0. It adds 410 tokens to every session, about $0.0020 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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