msp-reviewer

msp-reviewer is an agent for Claude Code from avelikiy/great_cto. It costs 54 tokens per session (2,491 once invoked), scanned A, original, MIT.

A pre-build security reviewer for software used by managed service providers (MSPs), which manage IT systems for multiple client companies.

In plain words
What is it for?
Use it to review client isolation, access permissions, credential storage, monitoring tools, service agreements, backups, patches, and incident handling before implementation.
Why use it?
It helps identify risks where one operator, credential, or mistake could affect many separate clients.

Agent for Claude Code

Written for Claude Code: effort in frontmatter. Also seen: model in frontmatter; mentions subagents.

Part of the great-cto plugin — 40 skills, 44 commands, 70 agents shipped together

Good fit Use it to review client isolation, access permissions, credential storage, monitoring tools, service agreements, backups, patches, and incident handling before implementation.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/avelikiy/great_cto/msp-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/avelikiy/great_cto

Made for: Claude Code.

Or install great-cto, the plugin that ships this one along with the rest of its 40 skills, 44 commands, 70 agents.

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 msp-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/avelikiy/great_cto/msp-reviewer/github.svg)](https://agentmods.dev/agents/avelikiy/great_cto/msp-reviewer)
Your own site
<a href="https://agentmods.dev/agents/avelikiy/great_cto/msp-reviewer"><img src="https://agentmods.dev/badge/agents/avelikiy/great_cto/msp-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 msp-reviewer

Your own site · 80×15
<a href="https://agentmods.dev/agents/avelikiy/great_cto/msp-reviewer"><img src="https://agentmods.dev/badge/agents/avelikiy/great_cto/msp-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 54 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,491 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 $0.00054 $0.02491
Opus 5 $0.00027 $0.01246
Sonnet 5 $0.00011 $0.00498
Haiku 4.5 $0.00005 $0.00249

Measured 6d ago against content hash 41db77729428, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

msp-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/msp-reviewer.md · 206 lines

How it starts

The opening of the file, as written. The whole thing — 206 lines — stays where its author put it; the contents beside it link to each section on GitHub.

MSP Reviewer

You are the MSP Reviewer — specialist subagent for archetype: enterprise-saas / devtools products built for or by Managed Service Providers (MSPs) — IT services firms that remotely manage infrastructure for multiple downstream client organizations. You cover the multi-client blast-radius surface that general enterprise-saas-reviewer (single-tenant-per-customer SaaS) does not: an MSP platform is a multiplier — one compromised MSP credential can cascade into every client it manages (the pattern behind Kaseya 2021 and similar supply-chain incidents).

You are invoked by architect BEFORE senior-dev claims tasks, and directly via /msp-review. You write a threat model at docs/sec-threats/TM-msp-{slug}.md, then append a <!-- HANDOFF --> block.

When to apply

  • Project archetype is enterprise-saas or devtools AND the product is an MSP platform, RMM (Remote Monitoring & Management), or PSA (Professional Services Automation) tool
  • Application gives one operator (the MSP) privileged remote access across many distinct client environments/tenants
  • Application stores or brokers credentials for client-side systems (routers, servers, SaaS admin accounts) on behalf of the MSP's technicians
  • Application tracks SLA commitments (patch cadence, backup verification, uptime) per client contract

Compliance surface

Multi-tenant client isolation — the blast-radius core

  • The MSP-specific risk: unlike standard SaaS multi-tenancy (isolating tenant data), an MSP platform grants remote execution/administrative access across tenants — a compromised MSP console session or a single over-privileged integration credential can pivot into every managed client simultaneously. This is a fundamentally larger blast radius than a data leak.
  • Engineering requirement: client environments must be architecturally isolated at the credential/session level, not just the data level — a technician's active session against Client A must not carry any implicit access to Client B; per-client credential scoping must be enforced by the platform, not just by technician discipline.

Read the full file on GitHub · 206 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 Changed 41db77729428
  2. 9d ago Changed · -64 tokens per session a3a936ae18c2
  3. 12d ago First seen · 206 lines · 118 tokens per session scan A dbef8f391aa0

Subscribe to this mod's changes

msp-reviewer is an agent published in the GitHub repository avelikiy/great_cto (93 stars, last pushed yesterday), licensed MIT. It adds 54 tokens to every session and 2,491 once invoked, about $0.0003 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.

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