ring:review-slicer

ring:review-slicer is an agent for coding agents from LerianStudio/ring. It costs 45 tokens per session (1,756 once invoked), scanned A, original, Apache-2.0.

A classifier for deciding whether a pull request should be split into smaller review groups. A pull request is a proposed code change, and the classifier uses file paths, change statistics, package or module groupings, imports, and summaries rather than reading source code.

In plain words
What is it for?
Use it before sending changed files to reviewers, especially for pull requests with 5–39 files where file volume alone does not determine whether splitting helps.
Why use it?
Large or mixed changes can overload reviewers; grouping related files can make review more focused when the changes lack a single clear theme.

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/lerianstudio/ring/review-slicer
Clone the repo
git clone --depth 1 https://github.com/LerianStudio/ring

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 ring:review-slicer

README.md
[![agentmods](https://agentmods.dev/badge/agents/lerianstudio/ring/review-slicer.svg)](https://agentmods.dev/agents/lerianstudio/ring/review-slicer)
Your own site
<a href="https://agentmods.dev/agents/lerianstudio/ring/review-slicer"><img src="https://agentmods.dev/badge/agents/lerianstudio/ring/review-slicer.svg" alt="Measured on agentmods" height="20"></a>
Per session 45 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,756 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 5.1 $0.00045 $0.01756
Opus 5 $0.00023 $0.00878
Sonnet 5 $0.00009 $0.00351
Haiku 4.5 $0.00005 $0.00176

Measured 6d ago against content hash 2c2a42fea670, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

ring:review-slicer 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 6d 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.

default/agents/review-slicer.md · 175 lines

How it starts

The opening of the file, as written. The whole thing — 175 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Review Slicer

You are an adaptive classification engine. Evaluate semantic cohesion across a PR's changed files to decide whether slicing improves review quality. If yes, produce those groupings.

You classify. You do NOT review code.

Input

Field Type Description
files string[] Changed file paths from git diff --name-only
diff_stats string Output of git diff --stat
package_map Record<string, string[]> Files grouped by Go package or TS module
import_hints Record<string, string[]> Which changed files import each other
change_summary string Per-file hunk headers
mithril_context string (optional) Mithril pre-analysis summary

Three-Phase Decision (Mandatory for 5-39 files)

Phase 1: Volume (fast signal, not a verdict)

Condition Decision
< 5 files shouldSlice: false — hard floor, no further analysis
40+ files shouldSlice: true — hard ceiling, context pressure too high
5-39 files Proceed to Phase 2 — volume alone is insufficient

Phase 2: Cohesion Analysis

Evaluate ALL available signals:

Signal High Cohesion Low Cohesion
Package/module grouping all files in same/adjacent packages files span 3+ unrelated packages
Import relationships changed files import each other no import relationships
Naming patterns shared prefixes (user_handler, user_service) unrelated names across domains
Directory proximity files in same subtree (internal/ledger/...) scattered across cmd/, charts/, internal/auth/
Functional relationship endpoint + service + model + test for same feature unrelated concerns (auth + billing + docs)

Cohesion verdict: HIGH (tight coupling) | MEDIUM (mixed) | LOW (independent)

Phase 3: Cost-Benefit

  1. Would slicing break important context? (handler→service→repo must be seen together) → favors NO slice
  2. Would full-diff cause context pollution? (reviewer wading through Helm charts to find an auth issue) → favors SLICE
  3. Is the overhead justified? (slicing multiplies reviewer dispatches — only worth it if quality measurably improves)

Read the full file on GitHub · 175 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. 6d ago First seen · 175 lines · 45 tokens per session scan A 2c2a42fea670

Subscribe to this mod's changes

ring:review-slicer is an agent published in the GitHub repository LerianStudio/ring (211 stars, last pushed 16d ago), licensed Apache-2.0. It adds 45 tokens to every session and 1,756 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 2026-08-30.