mcp-reviewer

mcp-reviewer is an agent for Claude Code from hoangsonww/Claude-Code-Agent-Monitor. It costs 21 tokens per session (119 once invoked), scanned A, original, MIT.

A code-review agent focused on MCP servers, which let an AI host call external tools. It reviews tool definitions, safety checks, network-client behavior, protocol output, and setup documentation.

In plain words
What is it for?
Use it to review MCP server changes and produce prioritized findings, file references, and verification commands.
Why use it?
It helps catch unsafe operations, unclear input rules, unreliable requests, invalid protocol output, and incorrect host configuration before release.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

Good fit Use it to review MCP server changes and produce prioritized findings, file references, and verification commands.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/hoangsonww/claude-code-agent-monitor/mcp-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/hoangsonww/Claude-Code-Agent-Monitor

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 mcp-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/hoangsonww/claude-code-agent-monitor/mcp-reviewer/github.svg)](https://agentmods.dev/agents/hoangsonww/claude-code-agent-monitor/mcp-reviewer)
Your own site
<a href="https://agentmods.dev/agents/hoangsonww/claude-code-agent-monitor/mcp-reviewer"><img src="https://agentmods.dev/badge/agents/hoangsonww/claude-code-agent-monitor/mcp-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 mcp-reviewer

Your own site · 80×15
<a href="https://agentmods.dev/agents/hoangsonww/claude-code-agent-monitor/mcp-reviewer"><img src="https://agentmods.dev/badge/agents/hoangsonww/claude-code-agent-monitor/mcp-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 21 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 119 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 $0.00021 $0.00119
Opus 5 $0.00010 $0.00060
Sonnet 5 $0.00004 $0.00024
Haiku 4.5 $0.00002 $0.00012

Measured 13d ago against content hash acd5991104da, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

mcp-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 13d 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.

.claude/agents/mcp-reviewer.md · 21 lines

What it actually says

You are an MCP-focused reviewer for this repository.

Focus on:

  • Tool naming and schema strictness.
  • Safety gate enforcement for mutating/destructive operations.
  • API client timeout/retry/error handling.
  • Stdio protocol safety (stderr-only logs).
  • Host configuration and runbook documentation accuracy.

Output:

  • Prioritized findings.
  • File references.
  • Verification commands to run.
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. 13d ago First seen · 21 lines · 21 tokens per session scan A acd5991104da

Subscribe to this mod's changes

mcp-reviewer is an agent published in the GitHub repository hoangsonww/Claude-Code-Agent-Monitor (991 stars, last pushed 4d ago), licensed MIT. It adds 21 tokens to every session and 119 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 2026-08-30.

Related

Other agents, from other repositories

challenger

Use when: before the lead reports a root-cause conclusion, a 'done/verified' claim, an irreversible action about to run (commit/deploy/rm/push), or a 2nd-time fix — in APEX or plain conversation; also every eLicit round and Verify gate. Do NOT use for: code correctness/lint/types/API usage (sniper's job), or as a veto…

fusengine/agents · 92 tokens

code-reviewer

Use when: reviewing PRs, analyzing code quality, or checking SOLID/OWASP/Clean Code compliance. Do NOT use for: writing or implementing code (use a domain expert), or a full security penetration test (use security-auditor).

fusengine/agents · 55 tokens

reviewer-agent

Reviews implementation against enriched roadmap chunk, architecture, and code quality standards. Applies perspective references loaded by orchestrator. Produces structured review with accept/revise decision. Use for quality gate after developer-agent produces code, and for whole-project review against PRD at end of…

isvlasov/rageatc-oss · 59 tokens

critic-agent

Use this agent for rigorous quality assessment of work produced by other agents, particularly producer-agent. Invoke after any significant artefact or deliverable is generated — and after each revision — to evaluate it against the task brief, applicable standards (such as writing-skills), and user requirements before…

isvlasov/rageatc-oss · 77 tokens

code-reviewer

General-purpose code reviewer for single files or focused diffs. Use when reviewing specific files or a single diff before merging. Examines logical errors, race conditions, edge cases, type mismatches, and CLAUDE.md compliance. Reports issues by severity with file:line references. For multi-file PR or pre-merge…

stuartshields/claude-setup · 93 tokens

history-reviewer

Git history-aware reviewer. Use when changes touch code with non-trivial history, or to check whether a fix accidentally reverts a prior fix or breaks an established pattern. Uses git blame and log to surface why existing code looks the way it does. Read-only. Reports regressions, reverted fixes, and ignored context…

stuartshields/claude-setup · 75 tokens