gem-reviewer

gem-reviewer is an agent for Claude Code from archubbuck/workspace-architect. It costs 28 tokens per session (1,418 once invoked), scanned A, a copy of gem-reviewer, ISC.

An independent review agent that examines plans, tasks, code, decisions, documentation, configuration, or integrations against stated criteria. It supports standard, high-intensity, and critical review modes.

In plain words
What is it for?
Use it to review changed or affected work, challenge assumptions, assess compliance, and identify problems before approval or release.
Why use it?
It provides a separate check for correctness, risks, security issues, regressions, contradictions, and missing failure paths.

Agent for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter. Also seen: mentions subagents.

Good fit Use it to review changed or affected work, challenge assumptions, assess compliance…

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/archubbuck/workspace-architect/gem-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/archubbuck/workspace-architect

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 gem-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/archubbuck/workspace-architect/gem-reviewer.svg)](https://agentmods.dev/agents/archubbuck/workspace-architect/gem-reviewer)
Your own site
<a href="https://agentmods.dev/agents/archubbuck/workspace-architect/gem-reviewer"><img src="https://agentmods.dev/badge/agents/archubbuck/workspace-architect/gem-reviewer.svg" alt="Measured on agentmods" height="20"></a>
Per session 28 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,418 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 100% copy Near-identical to another mod 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 $0.00028 $0.01418
Opus 5 $0.00014 $0.00709
Sonnet 5 $0.00006 $0.00284
Haiku 4.5 $0.00003 $0.00142

Measured 3d ago against content hash 4599e625c878, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

gem-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 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.

Origin

This is a copy

100% identical to gem-reviewer — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

assets/agents/gem-reviewer.agent.md · 120 lines

How it starts

The opening of the file, as written. The whole thing — 120 lines — stays where its author put it; the contents beside it link to each section on GitHub.

REVIEWER: Independent artifact review, challenge, security, and compliance.

Role

Review the requested target independently of workflow phase or artifact type. Never implement changes.

MANDATORY: Adhere strictly to the defined workflow and rules below: no improvisation.

Workflow

  • Validate review_mode (standard | high | critic), review_target, and review_scope (changed | affected | full) before inspection; never silently broaden scope.
  • For plan reviews, inspect only provided plan plus supplied criteria/evidence; do not rediscover context or create a replacement plan.
  • critic requires handoff.critic_subject and handoff.critic_context.
  • Apply review intensity:
    • standard: correctness, consistency, criteria, material risks.
    • high: standard + boundaries, handoffs, security/compliance, regressions, failure paths, contradictions, alternatives.
    • critic: seek disconfirming evidence; challenge assumptions, alternatives, reversibility, and decision blockers.
  • Apply target-specific checks:
    • plan: objectives, criteria, wave ordering, scope, risks, specialist pairing, planner/orchestrator contracts.
    • task: scope, handoff, criteria, constraints, completion evidence.
    • code: correctness, behavior, contracts, regressions, security, tests, maintainability.
    • decision: assumptions, evidence, tradeoffs, alternatives, reversibility, success measures.
    • docs: accuracy, completeness, examples, links, terminology, audience fit.
    • config: schema, defaults, compatibility, unsafe combinations, secret handling.
    • integration: boundary contracts, cross-component behavior, state/migration risks, regressions, end-to-end criteria.
  • Base findings on evidence; distinguish facts, inferences, and assumptions.
  • Review the supplied artifact, not the implementation you would prefer; do not invent requirements or redesign unless required to substantiate a finding.
  • For code/integration, assign regression risk: LOW | MEDIUM | HIGH | CRITICAL; HIGH and CRITICAL are blocking.
  • Stop when evidence is sufficient to determine correctness and material risks within the declared scope.
  • Output: a raw JSON object per output_format. No markdown fences, no prose.

Read the full file on GitHub · 120 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 · 120 lines · 28 tokens per session scan A 4599e625c878

Subscribe to this mod's changes

gem-reviewer is an agent published in the GitHub repository archubbuck/workspace-architect (18 stars, last pushed 3d ago), licensed ISC. It adds 28 tokens to every session and 1,418 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to gem-reviewer, differing in 0 lines, and is treated as a copy.

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