agentmods.dev

ossec AGENTS.md

Repository instructions for a Chef cookbook that manages OSSEC HIDS packages and configuration. OSSEC HIDS is software that monitors hosts for signs of intrusion.

In plain words
What is it for?
Use it when maintaining the cookbook, selecting its package repositories, managing Policyfile dependencies, or handling missing packages with a source-build fallback.
Why use it?
It records compatibility limits, package sources, dependency rules, and fallback installation guidance so changes preserve the cookbook’s existing behavior.

Instructions file for CodexOpenCode

46 20d ago A scan 2,235 tokens original Apache-2.0
View the source file sous-chefs/ossec
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 instructions/sous-chefs/ossec/agents-md
Clone the repo
git clone --depth 1 https://github.com/sous-chefs/ossec

Made for: Codex, OpenCode.

Per session 2,235 This file is loaded in full into every session.
When invoked 2,235 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.02235 $0.02235
Opus 5 $0.01118 $0.01118
Sonnet 5 $0.00447 $0.00447
Haiku 4.5 $0.00224 $0.00224

Measured 3d ago against content hash b36d23f5a105, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

ossec 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 3d 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 · 198 lines

How it starts

The opening of the file, as written. The whole thing — 198 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Cookbook Purpose

Provides custom resources for managing OSSEC HIDS packages and configuration

Agent Findings

  • This cookbook is in an incremental modernization pass. Preserve existing public recipes and attributes unless a later full migration is explicitly selected.
  • Dependency management should use Policyfile.rb; do not reintroduce Berkshelf.

Known Limitations

This cookbook currently installs OSSEC HIDS packages from the Atomicorp archive paths used in the legacy cookbook, not from a first-party Chef workflow. Current upstream OSSEC documentation also supports source builds, and that source-install path is the safest fallback when packaged artifacts are missing or lagging.

Package Availability

APT (Debian/Ubuntu)

  • Repository base URL used by the cookbook: https://updates.atomicorp.com/channels/atomic/<platform>
  • Current cookbook GPG key: https://www.atomicorp.com/RPM-GPG-KEY.atomicorp.txt
  • Current cookbook layout logic:
    • Ubuntu 20.04+ and Debian 11+ use codename/<arch>/
    • older releases use the legacy codename + main layout

Verified Atomicorp archive trees on 2026-04-15:

  • Ubuntu trees present: xenial, bionic, focal, jammy, noble
  • Debian trees present: buster, bullseye, bookworm, trixie

Verified package artifacts on 2026-04-15:

  • Ubuntu 20.04 focal: OSSEC 4.0.0 agent/server packages observed for amd64 and arm64
  • Ubuntu 22.04 jammy: OSSEC 4.0.0 agent/server packages observed for amd64 and arm64
  • Ubuntu 24.04 noble: OSSEC 4.0.0 agent/server packages observed for amd64 and arm64

Vendor support documentation currently lists:

  • Debian 11 / 12 / 13: x86_64, aarch64/ARM64
  • Ubuntu 20 / 22 / 24: x86_64, aarch64/ARM64

Practical limitation:

  • The archive still exposes older distro trees, but those should not be treated as support commitments
  • Ubuntu 18.04 and 20.04 remain available in the archive, but 18.04 is ESM-only and 20.04 standard support ended on 2025-05-31
  • Debian 13 package metadata currently requires a compatibility fallback in this cookbook: the Atomicorp signing path is not accepted by current apt policy, so the cookbook enables trusted=yes for Debian 13 only to keep installs working

Read the full file on GitHub · 198 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. 3d ago First seen · 198 lines · 2,235 tokens per session scan A b36d23f5a105

Subscribe to this mod's changes

ossec AGENTS.md is an instructions file published in the GitHub repository sous-chefs/ossec (46 stars, last pushed 20d ago), licensed Apache-2.0. It adds 2,235 tokens to every session, about $0.0112 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.

chefchef-cookbookchef-resourcehacktoberfestmanaged-by-terraformossec
Related

Other instructions, from other repositories

postfix copilot-instructions.md

Instructions for sous-chefs/postfix, covering copilot instructions for sous chefs cookbooks, repository overview, project structure, build and test system and environment setup.

sous-chefs/postfix · 1,015 tokens

postfix AGENTS.md

Instructions for sous-chefs/postfix: This cookbook manages Postfix through operating system packages and service/configuration files. It does not build Postfix from source.

sous-chefs/postfix · 296 tokens

varnish AGENTS.md

Instructions for sous-chefs/varnish, covering agents.md, agent guidance, package availability, apt (debian/ubuntu) and dnf/yum (rhel family).

sous-chefs/varnish · 886 tokens

nfs AGENTS.md

Instructions for sous-chefs/nfs, covering agent notes, package availability, apt (debian/ubuntu), dnf/yum (rhel family, fedora, amazon linux) and zypper (suse).

sous-chefs/nfs · 387 tokens

emacs AGENTS.md

Instructions for sous-chefs/emacs, covering agents.md, cookbook purpose, agent findings, known limitations and package availability.

sous-chefs/emacs · 795 tokens

beyondcompare AGENTS.md

Instructions for sous-chefs/beyondcompare, covering agents.md, cookbook purpose, agent findings, known limitations and package availability.

sous-chefs/beyondcompare · 548 tokens