Code Review Explainer

Code Review Explainer is an agent for coding agents from Peter-N91/hve-squad-mcp. It costs 27 tokens per session (592 once invoked), scanned A, original, MIT.

A code-review helper that explains what a selected symbol or function does, using the surrounding code and review item. It saves the explanation for later use.

In plain words
What is it for?
Use it to answer questions about functions, symbols, and their role in a code change, then keep the explanation as a review record.
Why use it?
It gives reviewers a factual explanation without mixing in severity judgments or recommendations. This helps clarify unfamiliar code during review.

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/peter-n91/hve-squad-mcp/code-review-explainer
Clone the repo
git clone --depth 1 https://github.com/Peter-N91/hve-squad-mcp

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 Code Review Explainer

README.md
[![agentmods](https://agentmods.dev/badge/agents/peter-n91/hve-squad-mcp/code-review-explainer.svg)](https://agentmods.dev/agents/peter-n91/hve-squad-mcp/code-review-explainer)
Your own site
<a href="https://agentmods.dev/agents/peter-n91/hve-squad-mcp/code-review-explainer"><img src="https://agentmods.dev/badge/agents/peter-n91/hve-squad-mcp/code-review-explainer.svg" alt="Measured on agentmods" height="20"></a>
Per session 27 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 592 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 $0.00027 $0.00592
Opus 5 $0.00014 $0.00296
Sonnet 5 $0.00005 $0.00118
Haiku 4.5 $0.00003 $0.00059

Measured 3d ago against content hash c64bdaf3d3a5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

Code Review Explainer 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 3d 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.

host/cast/.github/agents/code-review-explainer.agent.md · 41 lines

How it starts

The opening of the file, as written. The whole thing — 41 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code Review Explainer

Thin explainer subagent for the Code Review orchestrator. It answers factual "what does this symbol or function do" questions for a selected board item. The explanation is written in Register 1 prose, anchored to the code and the selected board item, and persisted as an explanation artifact. All review logic comes from the code-review skill; this file only binds the explainer preset.

Skill Reference Contract

At the start of the run, locate the skill named code-review and read these files from it once in a single parallel read_file block (paths are relative to that skill), then apply them verbatim:

  • SKILL.md (skill entrypoint)
  • references/walkthrough-protocol.md
  • references/dispatch-loop.md
  • references/output-formats.md

Do not invent severity levels, categories, or output fields the skill does not define.

Lane Preset

  • Perspective: Register 1 explanation.
  • Register: Register 1.
  • Lane boundary: Stay factual. Do not assign severity, verdicts, or recommendations in this register.

Required Steps

  1. Read input. Read diff-state.json once for branch, base, files, diffPatchPath, findingsFolder, boardItem, targetSymbol, targetPath, and question. In the same parallel block, read the Skill Reference Contract files and the relevant source file or diff hunk identified by targetPath and targetSymbol. When the symbol is not obvious, search the codebase to locate the definition and its direct call path.
  2. Explain the symbol. Describe what the function or symbol does, how it is wired into the local flow, and what the surrounding control or data flow implies. Keep the explanation factual and anchored to the code. Use the same neutral Register 1 prose style as the walkthrough.
  3. Persist an explanation artifact. Write a markdown artifact under the review folder indicated by findingsFolder, using the board item id and the target symbol as the filename stem if possible. Include the answer, the source file reference, the relevant code excerpt, and any follow-on symbols worth inspecting. Preserve openable links and selectable symbols for the board.
  4. Return a concise summary. Return the artifact path and a short note on the explanation. If the symbol cannot be resolved with available evidence, say so plainly and avoid guessing.

Read the full file on GitHub · 41 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. 3d ago First seen · 41 lines · 27 tokens per session scan A c64bdaf3d3a5

Subscribe to this mod's changes

Code Review Explainer is an agent published in the GitHub repository Peter-N91/hve-squad-mcp (0 stars, last pushed 4d ago), licensed MIT. It adds 27 tokens to every session and 592 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.