roast

roast is a skill for Claude Code from isvlasov/rageatc-oss. It costs 69 tokens per session (447 once invoked), scanned A, original, MIT.

A thinking partner that challenges a proposal, assumption, or decision by looking for hidden assumptions, missing alternatives, downstream effects, and weak reasoning.

In plain words
What is it for?
Use it to stress-test a plan, product decision, argument, or stated preference when you want direct objections rather than a full artefact review.
Why use it?
It exposes problems in an idea before time is spent implementing it or relying on it.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter.

Part of the rageatc-core-oss plugin — 24 skills, 6 agents shipped together

Good fit Use it to stress-test a plan, product decision, argument, or stated preference when you want direct objections rather than a full artefact review.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/isvlasov/rageatc-oss/roast
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 isvlasov/rageatc-oss --skill roast
Clone the repo
git clone --depth 1 https://github.com/isvlasov/rageatc-oss

Made for: Claude Code.

Or install rageatc-core-oss, the plugin that ships this one along with the rest of its 24 skills, 6 agents.

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 roast

README.md
[![agentmods](https://agentmods.dev/badge/skills/isvlasov/rageatc-oss/roast/github.svg)](https://agentmods.dev/skills/isvlasov/rageatc-oss/roast)
Your own site
<a href="https://agentmods.dev/skills/isvlasov/rageatc-oss/roast"><img src="https://agentmods.dev/badge/skills/isvlasov/rageatc-oss/roast/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 roast

Your own site · 80×15
<a href="https://agentmods.dev/skills/isvlasov/rageatc-oss/roast"><img src="https://agentmods.dev/badge/skills/isvlasov/rageatc-oss/roast.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 69 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 447 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 $0.00069 $0.00447
Opus 5 $0.00034 $0.00224
Sonnet 5 $0.00014 $0.00089
Haiku 4.5 $0.00007 $0.00045

Measured 9d ago against content hash 9d063526a1f1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

roast 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 9d 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.

plugins/rageatc-core-oss/skills/roast/SKILL.md · 37 lines

What it actually says

Roast

Behaviour

Without argument: challenge the user's most recent proposal, decision, or line of reasoning. With argument (e.g. /roast my assumption that users prefer simplicity): challenge the stated target.

Attack through whichever lenses apply:

  1. Hidden assumptions — what are they taking for granted that might not hold?
  2. Missing alternatives — what options haven't they considered?
  3. Second-order effects — what happens downstream that they're not accounting for?
  4. Survivorship bias / cherry-picking — are they reasoning from incomplete evidence?
  5. Goal misalignment — are they optimising for what they think they're optimising for?

If the reasoning is solid, say "I don't see holes in this" and stop — don't manufacture objections.

Depth

Quick (default): 3–5 sharp points, each 1–3 sentences — state the weakness and why it matters. No preamble, no softening.

Thorough (the user asks for a deep roast, or the decision is high-stakes enough to warrant it): cover all applicable lenses, explain each specific risk or failure mode, suggest what evidence or thinking would resolve the concern, and flag which objections are strongest vs nitpicks.

Tone

  • Direct: no "that's a great idea, but..." — go straight to the problems.
  • Sparring, not destruction: acknowledge genuinely strong points and move on.
  • Honest about uncertainty: "this might not apply, but if X then Y" beats false confidence.
  • No padding: don't repeat their words back, don't summarise at the end. Challenge, then stop.

Challenge their specific reasoning, not generic best practices. For artefact review, point to /critic instead.

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. 9d ago First seen · 37 lines · 69 tokens per session scan A 9d063526a1f1

Subscribe to this mod's changes

roast is a skill published in the GitHub repository isvlasov/rageatc-oss (9 stars, last pushed 1mo ago), licensed MIT. It adds 69 tokens to every session and 447 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.