audit-context-building

audit-context-building is a skill for Claude Code, Codex from sickn33/agentic-awesome-skills. It costs 27 tokens per session (2,167 once invoked), scanned A, original, MIT.

A structured method for reading code line by line and building a detailed picture of how its functions and modules work together before looking for bugs or security weaknesses.

In plain words
What is it for?
Use it to prepare for security audits, bug investigations, architecture reviews, and threat modelling without making findings or fixes yet.
Why use it?
It reduces guesses, missed assumptions, and contradictions during complex audits by establishing system context first.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions subagents.

Part of the agentic-awesome-skills plugin — 196 skills shipped together

Good fit Use it to prepare for security audits, bug investigations, architecture reviews, and threat modelling without making findings or fixes yet.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sickn33/agentic-awesome-skills/audit-context-building
About the project

AAS Core is a local control plane for coding agents that lets them search a large catalogue of skills, choose a stack, validate it, and create a reproducible plan. It is used to assemble and review agent workflows through its CLI, local MCP server, catalogue, plugins, and Workbench. The catalogue add-ons provide the skills, plugins, bundles, and workflows that AAS Core helps agents select and validate.

sickn33/agentic-awesome-skills · 46,230 stars · on GitHub · sickn33.github.io

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 sickn33/agentic-awesome-skills --skill audit-context-building
Clone the repo
git clone --depth 1 https://github.com/sickn33/agentic-awesome-skills

Made for: Claude Code, Codex.

Or install agentic-awesome-skills, the plugin that ships this one along with the rest of its 196 skills.

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 audit-context-building

README.md
[![agentmods](https://agentmods.dev/badge/skills/sickn33/agentic-awesome-skills/audit-context-building/github.svg)](https://agentmods.dev/skills/sickn33/agentic-awesome-skills/audit-context-building)
Your own site
<a href="https://agentmods.dev/skills/sickn33/agentic-awesome-skills/audit-context-building"><img src="https://agentmods.dev/badge/skills/sickn33/agentic-awesome-skills/audit-context-building/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 audit-context-building

Your own site · 80×15
<a href="https://agentmods.dev/skills/sickn33/agentic-awesome-skills/audit-context-building"><img src="https://agentmods.dev/badge/skills/sickn33/agentic-awesome-skills/audit-context-building.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,167 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Memory Poisoning · line 152
    Skill manipulates agent memory, state, or stored context. Memory corruption can alter personality, override safety rules, or cause unpredictable behavior.
    Fix: Protect agent memory and state from modification by untrusted content. Use read-only memory for critical instructions and validate all state changes.
How audits are shown
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 $0.02167
Opus 5 $0.00014 $0.01084
Sonnet 5 $0.00005 $0.00433
Haiku 4.5 $0.00003 $0.00217

Measured 3d ago against content hash ddf268186b09, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

audit-context-building 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.

Origin

Copies of this mod

8 near-identical copies found in the catalogue:

plugins/agentic-awesome-skills-claude/skills/audit-context-building/SKILL.md · 310 lines

How it starts

The opening of the file, as written. The whole thing — 310 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Deep Context Builder Skill (Ultra-Granular Pure Context Mode)

1. Purpose

This skill governs how Claude thinks during the context-building phase of an audit.

When active, Claude will:

  • Perform line-by-line / block-by-block code analysis by default.
  • Apply First Principles, 5 Whys, and 5 Hows at micro scale.
  • Continuously link insights → functions → modules → entire system.
  • Maintain a stable, explicit mental model that evolves with new evidence.
  • Identify invariants, assumptions, flows, and reasoning hazards.

This skill defines a structured analysis format (see Example: Function Micro-Analysis below) and runs before the vulnerability-hunting phase.


When to Use

Use when:

  • Deep comprehension is needed before bug or vulnerability discovery.
  • You want bottom-up understanding instead of high-level guessing.
  • Reducing hallucinations, contradictions, and context loss is critical.
  • Preparing for security auditing, architecture review, or threat modeling.

Do not use for:

  • Vulnerability findings
  • Fix recommendations
  • Exploit reasoning
  • Severity/impact rating

2. How This Skill Behaves

When active, Claude will:

  • Default to ultra-granular analysis of each block and line.
  • Apply micro-level First Principles, 5 Whys, and 5 Hows.
  • Build and refine a persistent global mental model.
  • Update earlier assumptions when contradicted ("Earlier I thought X; now Y.").
  • Periodically anchor summaries to maintain stable context.
  • Avoid speculation; express uncertainty explicitly when needed.

Goal: deep, accurate understanding, not conclusions.


Rationalizations (Do Not Skip)

Rationalization Why It's Wrong Required Action
"I get the gist" Gist-level understanding misses edge cases Line-by-line analysis required
"This function is simple" Simple functions compose into complex bugs Apply 5 Whys anyway
"I'll remember this invariant" You won't. Context degrades. Write it down explicitly
"External call is probably fine" External = adversarial until proven otherwise Jump into code or model as hostile
"I can skip this helper" Helpers contain assumptions that propagate Trace the full call chain
"This is taking too long" Rushed context = hallucinated vulnerabilities later Slow is fast

Read the full file on GitHub · 310 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 Changed · +1 lines ddf268186b09
  2. 6d ago First seen · 309 lines · 27 tokens per session scan A 7382440d4cca

Subscribe to this mod's changes

audit-context-building is a skill published in the GitHub repository sickn33/agentic-awesome-skills (46,230 stars, last pushed yesterday), licensed MIT. It adds 27 tokens to every session and 2,167 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 2026-09-05.