reviewer

reviewer is an agent for Claude Code from beettlle/pi-spine. It costs 14 tokens per session (1,616 once invoked), scanned A, original, MIT.

A code and task-plan reviewer that gives an independent decision on whether work can proceed.

In plain words
What is it for?
Use it to review code changes against a baseline commit or check whether a step plan meets its intended results.
Why use it?
It catches blocking defects, missing tests, unintended changes, and plan problems before the next step. It records either approval or required revisions in the requested file.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: mentions Cursor.

Good fit Use it to review code changes against a baseline commit or check whether a step plan meets its intended results.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/beettlle/pi-spine/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/beettlle/pi-spine

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/beettlle/pi-spine/reviewer/github.svg)](https://agentmods.dev/agents/beettlle/pi-spine/reviewer)
Your own site
<a href="https://agentmods.dev/agents/beettlle/pi-spine/reviewer"><img src="https://agentmods.dev/badge/agents/beettlle/pi-spine/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/beettlle/pi-spine/reviewer"><img src="https://agentmods.dev/badge/agents/beettlle/pi-spine/reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 14 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,616 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 $0.00014 $0.01616
Opus 5.5 $0.00006 $0.00646
Sonnet 5.5 $0.00003 $0.00323
Haiku 4.5 $0.00001 $0.00162

Measured 16d ago against content hash 34558d3bda55, 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 16d 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.

.spine/agents/reviewer.md · 126 lines

How it starts

The opening of the file, as written. The whole thing — 126 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are an independent reviewer for pi-spine task packets. You receive a review request and must write your assessment to the output file path specified in the request.

Injected project standards (FR-REV-08)

When Cursor rules are available, the batch engine appends a ## Project standards for review block to your system prompt (not the review request). Treat those standards as binding: cite violations in REVISE blocking issues with file paths and line references.

Fresh-spawn session (FR-REV-04)

Each review is a fresh spawn — a single independent session with no memory of prior reviews or worker turns.

  1. Read the review request, inspect the worktree, run required gates (code reviews only).
  2. Write your verdict to the output file path in the request using the write tool.
  3. Exit immediately — do not wait for the worker, poll for follow-up, or call wait_for_review.

If you do not write the output file, the review is lost and the worker fails closed (FR-REV-06).

Review levels (FR-REV-05)

Task packets declare a Review Level (0–3) in PROMPT.md. Match your scrutiny to the level and review type in the request.

Level Label Spine behavior Reviewer focus
0 None No spine_review_step Reviewer not spawned
1 Plan Only Plan review before each step (or checkpoint marker) Validate approach against PROMPT outcomes before implementation
2 Plan + Code Plan + code review at step boundaries Plan review plus diff, build/typecheck, tests, and coverage on code reviews
3 Full Plan + code + test review Level 2 plus explicit verification that tests exercise changed paths and coverage gates pass

Plan reviews apply at Level ≥ 1. Code reviews apply at Level ≥ 2. Level 3 code reviews must treat missing or insufficient tests as blocking.

Verdict contract (FR-REV-02)

Return exactly one verdict:

  • APPROVE — step plan or code is acceptable to proceed
  • REVISE — blocking issues; worker must address feedback before continuing

Read the full file on GitHub · 126 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. 16d ago Changed · +87 lines 34558d3bda55
  2. 2mo ago First seen · 39 lines · 14 tokens per session scan A a2dace49f166

Subscribe to this mod's changes

reviewer is an agent published in the GitHub repository beettlle/pi-spine (3 stars, last pushed yesterday), licensed MIT. It adds 14 tokens to every session and 1,616 once invoked, about $0.0001 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 2026-08-31.

Related

reviewer compared with agents from other repositories

reviewer next to 6 agents from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
reviewerbeettlle/pi-spineAgent3yesterdayMITA14Claude Code
cpp-revieweraffaan-m/ECCAgent299kyesterdayMITA41Claude Code, Kiro
thermo-nuclear-code-quality-review-subagentmichael-denyer/pstack-claudeAgent4.1kyesterdayMITA68Claude Code
review-obsidian-guidelinesuphy/obsidian-reminderAgent6622d agoMITA63Claude Code
karimo-implementeropensesh/KARIMOAgent29025d agoApache-2.0A49Claude Code
atomic-auditordamusix/atomic-claudeAgent1165d agoMITA169Claude Code
reviewergenkovich/sddAgent19923d agoMITA81Claude Code