advr

A command that applies an adversarial reasoning procedure to the provided input. It builds claims and then tries to challenge them.

In plain words
What is it for?
It helps test conclusions by looking for ways they could be wrong.
Why use it?
It is intended to expose weak or unsupported claims before they are accepted.

Command for Claude Code

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 commands/benjam3n/reasoningtool/advr
Clone the repo
git clone --depth 1 https://github.com/benjam3n/reasoningtool

Made for: Claude Code.

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 60 The whole file, excluding the scripts and references it only reads on demand.
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 $0.00000 $0.00060
Opus 5 $0.00000 $0.00030
Sonnet 5 $0.00000 $0.00012
Haiku 4.5 $0.00000 $0.00006

Measured yesterday against content hash 4dfea5e985dc, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

advr 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 yesterday.

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.

.claude/commands/advr.md · 2 lines

What it actually says

Nothing is a fact until it survives an assassination attempt. Builder constructs claims, Breaker tries to destroy them.. Read and execute /home/ben/Documents/projects/reasoningtool/claude-code-plugin/skills/advr/SKILL.md, applying it to this input: $ARGUMENTS

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. yesterday First seen · 2 lines · 0 tokens per session scan A 4dfea5e985dc

Subscribe to this mod's changes

advr is a command published in the GitHub repository benjam3n/reasoningtool (9 stars, last pushed 1mo ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 60 tokens. 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 2026-09-01.