reviewer

reviewer is an agent for Claude Code from mkupermann/throughline. It costs 10 tokens per session (86 once invoked), scanned A, original, Apache-2.0.

A code-review agent that reads a proposed code change, called a diff, line by line. It reports only mistakes that could make the software behave incorrectly, such as faulty logic, off-by-one errors, or unsafe handling of missing values.

In plain words
What is it for?
Use it to check a diff for behavior bugs, quote the relevant lines, and explain the risk of each issue.
Why use it?
It filters out style and naming comments so attention stays on correctness problems that could affect users.

Agent for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Use it to check a diff for behavior bugs, quote the relevant lines, and explain the risk of each issue.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/mkupermann/throughline/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/mkupermann/throughline

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 reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/mkupermann/throughline/reviewer/github.svg)](https://agentmods.dev/agents/mkupermann/throughline/reviewer)
Your own site
<a href="https://agentmods.dev/agents/mkupermann/throughline/reviewer"><img src="https://agentmods.dev/badge/agents/mkupermann/throughline/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 reviewer

Your own site · 80×15
<a href="https://agentmods.dev/agents/mkupermann/throughline/reviewer"><img src="https://agentmods.dev/badge/agents/mkupermann/throughline/reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 10 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 86 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 $0.00010 $0.00086
Opus 5.5 $0.00004 $0.00034
Sonnet 5.5 $0.00002 $0.00017
Haiku 4.5 $0.00001 $0.00009

Measured today against content hash e3bbbec22310, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

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 today.

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.

docs/demo/rust/assistants/home/.claude/agents/reviewer.md · 19 lines

What it actually says

Reviewer Agent

Read the provided diff line by line.

Check for logic errors, off-by-one mistakes and null handling.

Do not comment on style, naming or formatting.

Report only issues that could cause incorrect behaviour.

For each issue, quote the offending line and explain the risk.

If the diff is correct, respond with a single sentence confirming it.

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. today First seen · 19 lines · 10 tokens per session scan A e3bbbec22310

Subscribe to this mod's changes

reviewer is an agent published in the GitHub repository mkupermann/throughline (2 stars, last pushed today), licensed Apache-2.0. It adds 10 tokens to every session and 86 once invoked, about $0.0000 per session on Opus 5.5. 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 2026-10-29.

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