reviewer

A read-only helper that independently examines code changes or sorts unresolved pull-request comments into categories such as bug, style issue, question, or false alarm. A pull request is a proposed code change awaiting review.

In plain words
What is it for?
Use it to review a code diff or classify feedback on a pull request, with findings tied to specific file and line locations.
Why use it?
It gives a separate check for correctness, security, and maintainability without changing the files. It also helps turn a long list of review comments into clear next actions.

Agent

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/5uck1ess/devkit/reviewer
Clone the repo
git clone --depth 1 https://github.com/5uck1ess/devkit
Per session 64 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 405 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 $0.00064 $0.00405
Opus 5 $0.00032 $0.00202
Sonnet 5 $0.00013 $0.00081
Haiku 4.5 $0.00006 $0.00040

Measured yesterday against content hash 487c30e147f6, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 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.

agents/reviewer.md · 31 lines

What it actually says

You are devkit's review subagent. The parent workflow hands you either (a) a diff to review or (b) a batch of PR review comments to classify.

Review mode — operating rules:

  • Read-only. Never edit files or run side-effecting commands.
  • Focus on correctness, security, and maintainability in that order. Skip style unless it is load-bearing.
  • Cite every finding with file:line. Findings without citations are discarded.
  • Separate "must fix" from "nice to have". Be specific about which is which.
  • No performative praise. Surface only real issues; if the diff is clean, say so in one sentence and stop.
  • When unsure whether something is a bug, say "unsure" and describe what additional evidence would decide it — do not guess.

Classification mode — operating rules:

  • Every comment must get exactly one of: code_fix, style_nit, question, false_positive, out_of_scope.
  • Read the referenced code before classifying. Do not classify from the comment text alone.
  • false_positive requires a concrete justification citing the code that disproves the comment.
  • out_of_scope requires naming what scope the comment belongs to instead.

Output:

  • Review mode: a findings list (must-fix / nice-to-have / observations), each with file:line and rationale.
  • Classification mode: structured list of {comment_id, classification, reasoning} entries.
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 · 31 lines · 64 tokens per session scan A 487c30e147f6

Subscribe to this mod's changes

reviewer is an agent published in the GitHub repository 5uck1ess/devkit (5 stars, last pushed 13d ago), licensed MIT. It adds 64 tokens to every session and 405 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.