adversarial-review

adversarial-review is a skill for Claude Code, Codex from nlebovits/parseltongue-claude. It costs 52 tokens per session (2,743 once invoked), scanned A, original, Apache-2.0.

A thorough method for checking whether documentation matches every feature in the source code. It looks for missing features, unsupported claims, and examples that could mislead users.

In plain words
What is it for?
Use it to audit READMEs, API references, migration guides, and performance statements for accuracy and completeness.
Why use it?
It replaces a quick read with evidence from the code, helping reveal undocumented commands, incomplete API coverage, and claims without proof.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: positional $N argument.

Good fit Use it to audit READMEs, API references, migration guides, and performance statements for accuracy and completeness.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/nlebovits/parseltongue-claude/adversarial-review
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 nlebovits/parseltongue-claude --skill adversarial-review
Clone the repo
git clone --depth 1 https://github.com/nlebovits/parseltongue-claude

Made for: Claude Code, Codex.

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 adversarial-review

README.md
[![agentmods](https://agentmods.dev/badge/skills/nlebovits/parseltongue-claude/adversarial-review/github.svg)](https://agentmods.dev/skills/nlebovits/parseltongue-claude/adversarial-review)
Your own site
<a href="https://agentmods.dev/skills/nlebovits/parseltongue-claude/adversarial-review"><img src="https://agentmods.dev/badge/skills/nlebovits/parseltongue-claude/adversarial-review/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 adversarial-review

Your own site · 80×15
<a href="https://agentmods.dev/skills/nlebovits/parseltongue-claude/adversarial-review"><img src="https://agentmods.dev/badge/skills/nlebovits/parseltongue-claude/adversarial-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 52 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,743 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 $0.00052 $0.02743
Opus 5 $0.00026 $0.01372
Sonnet 5 $0.00010 $0.00549
Haiku 4.5 $0.00005 $0.00274

Measured 11d ago against content hash 198f87bce0cb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

adversarial-review 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 11d 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.

skills/adversarial-review/SKILL.md · 379 lines

How it starts

The opening of the file, as written. The whole thing — 379 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Adversarial Documentation Review

Catch what manual review misses: undocumented features, unverified claims, misleading examples.

When to Use This Skill

  • README/docs review: "Is this README accurate and complete?"
  • API documentation audit: "Are all methods documented?"
  • Performance claims: "Are these benchmarks real?"
  • Migration guides: "Does this show all breaking changes?"

Red flags that trigger adversarial review:

  • Quantitative claims without evidence ("5x faster")
  • Selective examples (shows 1 of 8 subcommands)
  • Version-dependent claims (could be outdated)

The Adversarial Difference

Manual Review Adversarial Review
"Looks comprehensive" 82.5% coverage (33/40 methods)
"Examples seem right" 7 methods undocumented (proven via derivation)
"5x claim noted" Unverified (no benchmark files found)
Miss check method gap Formal proof 4 variants missing

Instructions

Phase 1: Exhaustive Enumeration (Ground Truth)

Build complete inventories from source code, not docs.

For CLI Tools:
# Extract ALL commands and subcommands
uv run tool --help | grep "Commands:" -A 100
uv run tool add --help | awk '/Commands:/,/^$/' 
uv run tool check --help | awk '/Commands:/,/^$/'

# Count total
echo "add subcommands: 8 total"
echo "check subcommands: 7 total"
For Python APIs:
# Extract all public methods from source
import ast

with open('api/table.py') as f:
    tree = ast.parse(f.read())

for node in ast.walk(tree):
    if isinstance(node, ast.ClassDef) and node.name == 'Table':
        methods = [m.name for m in node.body 
                  if isinstance(m, ast.FunctionDef) 
                  and not m.name.startswith('_')]
        print(f"Total public methods: {len(methods)}")
        for m in sorted(methods):
            print(f"  {m}")

Critical: This is your ground truth. Docs must be measured against THIS, not assumed complete.

Read the full file on GitHub · 379 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. 11d ago First seen · 379 lines · 52 tokens per session scan A 198f87bce0cb

Subscribe to this mod's changes

adversarial-review is a skill published in the GitHub repository nlebovits/parseltongue-claude (0 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 52 tokens to every session and 2,743 once invoked, about $0.0003 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.