rfc-reviewer

rfc-reviewer is an agent for Claude Code from luca-mastrostefano/agent-native-setup. It costs 24 tokens per session (329 once invoked), scanned A, original, MIT.

An RFC reviewer that evaluates the quality of a technical decision document. An RFC is a written proposal explaining a problem, the chosen approach, alternatives, and consequences.

In plain words
What is it for?
Use it to review a new or changed RFC before acceptance, checking its problem statement, alternatives, trade-offs, reversibility, and relationship to existing RFCs.
Why use it?
It helps reveal proposals that assume the solution, overlook simpler options, misrepresent alternatives, hide costs, or conflict with earlier decisions.

Agent for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Use it to review a new or changed RFC before acceptance, checking its problem statement, alternatives, trade-offs, reversibility, and relationship to existing RFCs.

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Install with agentmods
npx agentmods add agents/luca-mastrostefano/agent-native-setup/rfc-reviewer
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.

Clone the repo
git clone --depth 1 https://github.com/luca-mastrostefano/agent-native-setup

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 rfc-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/luca-mastrostefano/agent-native-setup/rfc-reviewer/github.svg)](https://agentmods.dev/agents/luca-mastrostefano/agent-native-setup/rfc-reviewer)
Your own site
<a href="https://agentmods.dev/agents/luca-mastrostefano/agent-native-setup/rfc-reviewer"><img src="https://agentmods.dev/badge/agents/luca-mastrostefano/agent-native-setup/rfc-reviewer/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 rfc-reviewer

Your own site · 80×15
<a href="https://agentmods.dev/agents/luca-mastrostefano/agent-native-setup/rfc-reviewer"><img src="https://agentmods.dev/badge/agents/luca-mastrostefano/agent-native-setup/rfc-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 24 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 329 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 $0.00024 $0.00329
Opus 5 $0.00012 $0.00164
Sonnet 5 $0.00005 $0.00066
Haiku 4.5 $0.00002 $0.00033

Measured 9d ago against content hash 531b6fd0026f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

rfc-reviewer 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.

.claude/agents/rfc-reviewer.md · 26 lines

What it actually says

You review RFCs for this project — the decision, not the code. Read the RFC (and any it supersedes) and judge it against:

  1. Problem stated — is the Context a real problem with its constraints, not an assumed solution? Flag a Context that just restates the Decision.
  2. Simplest viable option — does the Decision pick the minimum that solves the problem, with an honest "why it wins"? Flag speculative scope or gold-plating.
  3. Alternatives genuinely weighed — are the rejected options real and fairly described, not strawmen? Name an obvious missing one (including "do nothing").
  4. Honest consequences — do they state the costs, what gets harder, and what's given up — not only the upside? Flag a section that only sells.
  5. Reversibility — is the "hard to reverse" framing accurate? A cheap-to-reverse change may not need an RFC at all; a one-way door must say so.
  6. No conflict — does it contradict or silently overlap an existing active, superseded, or retired RFC? If it supersedes one, does it say so?

Report findings ordered by severity, citing the section. Prefer a few high-confidence issues over a long list, and scale to the RFC — a one-line decision gets one-line scrutiny. If it's sound, say so plainly; don't manufacture objections.

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 · 26 lines · 24 tokens per session scan A 531b6fd0026f

Subscribe to this mod's changes

rfc-reviewer is an agent published in the GitHub repository luca-mastrostefano/agent-native-setup (5 stars, last pushed yesterday), licensed MIT. It adds 24 tokens to every session and 329 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 2026-08-31.