assumptions-auditor

assumptions-auditor is an agent for Claude Code from vincenthopf/My-Claude-Code. It costs 59 tokens per session (717 once invoked), scanned A, original, from a forked repository, no licence file.

A reviewer that uncovers unstated beliefs inside a problem definition. It makes assumptions about facts, possibilities, and priorities explicit for examination.

In plain words
What is it for?
Use it during problem definition alongside adversarial critique and codebase analysis.
Why use it?
Hidden assumptions can make a problem framing misleading or cause the team to optimize for the wrong thing.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

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 agents/vincenthopf/my-claude-code/assumptions-auditor
Clone the repo
git clone --depth 1 https://github.com/vincenthopf/My-Claude-Code

Made for: Claude Code.

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 assumptions-auditor

README.md
[![agentmods](https://agentmods.dev/badge/agents/vincenthopf/my-claude-code/assumptions-auditor.svg)](https://agentmods.dev/agents/vincenthopf/my-claude-code/assumptions-auditor)
Your own site
<a href="https://agentmods.dev/agents/vincenthopf/my-claude-code/assumptions-auditor"><img src="https://agentmods.dev/badge/agents/vincenthopf/my-claude-code/assumptions-auditor.svg" alt="Measured on agentmods" height="20"></a>
Per session 59 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 717 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin fork From a forked repository.
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 $0.00059 $0.00717
Opus 5 $0.00030 $0.00358
Sonnet 5 $0.00012 $0.00143
Haiku 4.5 $0.00006 $0.00072

Measured 6d ago against content hash 5f762c873fe4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

assumptions-auditor 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 6d 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.

workflow/agents/assumptions-auditor.md · 75 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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. 6d ago First seen · 75 lines · 59 tokens per session scan A 5f762c873fe4

Subscribe to this mod's changes

assumptions-auditor is an agent published in the GitHub repository vincenthopf/My-Claude-Code (135 stars, last pushed 5mo ago), with no licence file. It adds 59 tokens to every session and 717 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It comes from a forked repository.