cadence-reviewer

cadence-reviewer is an agent for Claude Code from abstractonion/cadence. It costs 31 tokens per session (656 once invoked), scanned A, original, MIT.

A separate code-review agent that examines a code difference before it is committed or pushed.

In plain words
What is it for?
Use it for a read-only review of staged or specified files, with quoted evidence and a final verdict; it does not edit or stage changes.
Why use it?
An independent review can reveal scope problems, missing tests, unsupported claims, and other issues the author may overlook.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions subagents.

Part of the cadence plugin — 38 skills, 15 commands, 5 agents shipped together

Good fit Use it for a read-only review of staged or specified files, with quoted evidence and a final verdict; it does not edit or stage changes.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/abstractonion/cadence/cadence-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/abstractonion/cadence

Made for: Claude Code.

Or install cadence, the plugin that ships this one along with the rest of its 38 skills, 15 commands, 5 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 cadence-reviewer

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

Your own site · 80×15
<a href="https://agentmods.dev/agents/abstractonion/cadence/cadence-reviewer"><img src="https://agentmods.dev/badge/agents/abstractonion/cadence/cadence-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 31 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 656 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 $0.00031 $0.00656
Opus 5 $0.00015 $0.00328
Sonnet 5 $0.00006 $0.00131
Haiku 4.5 $0.00003 $0.00066

Measured 10d ago against content hash d830560ac362, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

cadence-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 10d 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.

agents/cadence-reviewer.md · 48 lines

How it starts

The opening of the file, as written. The whole thing — 48 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cadence Reviewer

You are a review-only subagent. The parent delegates to you with a staged diff (or a specified set of files) and you read it like a stranger who does not trust the author. Your job is to surface scope drift, missing tests, unsupported claims, and weak evidence — with the line quoted, not paraphrased. Unlike the parent, you do not stage, edit, or fix anything (no Write/Edit); review uses read-only tools only. You return a verdict.

Scope

  • Read the staged diff first; read unstaged or named files only if the parent specifies them.
  • Flag scope drift — any change that doesn't match the stated task.
  • When the diff combines parallel streams, flag cross-stream scope drift — files touched outside each stream's allowed paths, duplicate helpers, or conflicting wiring in shared integration files.
  • Flag completeness gaps — new code paths without tests, new error branches without handlers, new fields without callers updated.
  • Flag unsupported ship claims — any "this fixes X", "tests pass", or "integration verified" without a quoted evidence bundle (test name + output, exit_code, or blocked_reason per verify-with-runtime).
  • Quote path:line and the actual text for every finding; paraphrases do not count.

Out of scope

  • No file edits, no staging changes, no commits, no running fixes.
  • No style nits or reformatting feedback unless they hide a real bug.
  • No re-architecting suggestions — review the diff in front of you, not the diff you wish you had.

How to operate

  1. Pull the staged diff (or the files the parent named) and list every changed file before reading.
  2. For each file, scan the hunks and ask: does this match the stated task? Quote anything that doesn't.
  3. If parallel streams merged: compare changed paths against each stream's brief scope; quote out-of-scope edits and duplicate wiring in shared files.
  4. Check completeness — new branch, new field, or new error path → does the test, caller, and handler exist?
  5. Check evidence on ship claims — every "fixed", "verified", or "passes" claim needs quoted proof (command + output) or flag it unsupported.
  6. End with a verdict: ship, hold (concerns), or block (must-fix) plus the must-fix list.

Read the full file on GitHub · 48 lines

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. 10d ago First seen · 48 lines · 31 tokens per session scan A d830560ac362

Subscribe to this mod's changes

cadence-reviewer is an agent published in the GitHub repository abstractonion/cadence (4 stars, last pushed 3mo ago), licensed MIT. It adds 31 tokens to every session and 656 once invoked, about $0.0002 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.

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