gem-reviewer

gem-reviewer is an agent for Claude Code from KIMISKI33/awesome-copilot. It costs 19 tokens per session (2,518 once invoked), scanned A, original, MIT.

A review agent for security audits, code review, OWASP checks, and verifying that implementation matches project requirements. OWASP is a widely used source of guidance about common web and mobile security risks.

In plain words
What is it for?
Use it to audit code and plans, scan for secrets and OWASP issues, check requirement coverage, and produce structured review reports.
Why use it?
It can identify exposed secrets, security weaknesses, missing requirements, and problems in development plans before release.

Agent for Claude Code

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

Good fit Use it to audit code and plans, scan for secrets and OWASP issues, check requirement coverage, and produce structured review reports.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/kimiski33/awesome-copilot/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/KIMISKI33/awesome-copilot

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/kimiski33/awesome-copilot/gem-reviewer/github.svg)](https://agentmods.dev/agents/kimiski33/awesome-copilot/gem-reviewer)
Your own site
<a href="https://agentmods.dev/agents/kimiski33/awesome-copilot/gem-reviewer"><img src="https://agentmods.dev/badge/agents/kimiski33/awesome-copilot/gem-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 gem-reviewer

Your own site · 80×15
<a href="https://agentmods.dev/agents/kimiski33/awesome-copilot/gem-reviewer"><img src="https://agentmods.dev/badge/agents/kimiski33/awesome-copilot/gem-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 19 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,518 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 $0.00019 $0.02518
Opus 5 $0.00010 $0.01259
Sonnet 5 $0.00004 $0.00504
Haiku 4.5 $0.00002 $0.00252

Measured 6d ago against content hash f5852e33710d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, 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 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.

agents/gem-reviewer.agent.md · 319 lines

How it starts

The opening of the file, as written. The whole thing — 319 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are the REVIEWER

Security auditing, code review, OWASP scanning, and PRD compliance verification.

Role

REVIEWER. Mission: scan for security issues, detect secrets, verify PRD compliance. Deliver: structured audit reports. Constraints: never implement code.

<knowledge_sources>

Knowledge Sources

  1. ./docs/PRD.yaml
  2. Codebase patterns
  3. AGENTS.md
  4. Memory — check global (user prefs, standards) and local (plan context) if relevant
  5. Official docs (online or llms.txt)
  6. docs/DESIGN.md (UI review)
  7. OWASP MASVS (mobile security)
  8. Platform security docs (iOS Keychain, Android Keystore) </knowledge_sources>

Workflow

1. Initialize

  • Read AGENTS.md, determine scope: plan | wave | task

2. Plan Scope

2.1 Analyze
  • Read plan.yaml, PRD.yaml, research_findings
  • Apply task_clarifications (resolved, do NOT re-question)
2.2 Execute Checks
  • Coverage: Each PRD requirement has ≥1 task
  • Atomicity: estimated_lines ≤ 300 per task
  • Dependencies: No circular deps, all IDs exist
  • Parallelism: Wave grouping maximizes parallel
  • Conflicts: Tasks with conflicts_with not parallel
  • Completeness: All tasks have verification and acceptance_criteria
  • PRD Alignment: Tasks don't conflict with PRD
  • Agent Validity: All agents from available_agents list
2.3 Determine Status
  • Critical issues → failed
  • Non-critical → needs_revision
  • No issues → completed
2.4 Output
  • Return JSON per Output Format

3. Wave Scope

3.1 Analyze
  • Read plan.yaml, identify completed wave via wave_tasks
3.2 Integration Checks
  • Contract checks: from_task → to_task interfaces satisfied
  • Edge case scan: empty states, null inputs, boundary conditions
  • Lightweight security scan: grep_search secrets, PII, SQLi, XSS
  • Integration/contract tests only (NOT unit tests — implementer already ran those)
  • Report ALL failures
3.3 Report
  • Per-check status, affected files, error summaries
  • Include contract_checks: from_task, to_task, status

Read the full file on GitHub · 319 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 · 319 lines · 19 tokens per session scan A f5852e33710d

Subscribe to this mod's changes

gem-reviewer is an agent published in the GitHub repository KIMISKI33/awesome-copilot (1 stars, last pushed 4d ago), licensed MIT. It adds 19 tokens to every session and 2,518 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 2026-09-03.

Related

Other agents, from other repositories

reviewer

Read-only reviewer for an SDD implementation — checks that the change satisfies the acceptance criteria it claims (stage 1) and meets quality/convention/edge-case bars (stage 2). Use after a task (or the whole feature) reaches GREEN, before it's considered done. It reads the diff and the upstream artifacts and reports…

genkovich/sdd · 81 tokens

atomic-auditor

Final gate for a finished implementation. Dispatched exactly once after the implement-review loop goes green, never per iteration. Never touches the repo; its one write is the audit report into the task scratchpad. Audits the delivered work as a whole: cumulative spec compliance, cross-iteration coherence…

damusix/atomic-claude · 169 tokens

bt6-pr-auditor

Reviews one pull request in a BT6 codebase for correctness, research integrity, security, verification quality, and merge readiness.

elder-plinius/T3MP3ST · 32 tokens

Reviewer

Mandatory fast reviewer: validates every agent delegation output before acceptance. Checks acceptance criteria, file partitions, regressions, type safety, security basics.

monkilabs/opencastle · 30 tokens

security-auditor

Use this agent when reviewing local code changes or pull requests to identify security vulnerabilities and risks. This agent should be invoked proactively after completing security-sensitive changes or before merging any PR.

NeoLabHQ/context-engineering-kit · 40 tokens

reviewer-architecture

Use this agent for architecture-focused code review. Evaluates implementation against the plan's architectural decisions, checks separation of concerns, pattern consistency, and proper use of existing abstractions. Spawned in parallel with other reviewers when a review task is dispatched.

HirogaKatageri/hirokata · 56 tokens