scalability-advisor

scalability-advisor is a skill for Claude Code from alirezarezvani/claude-cto-team. It costs 45 tokens per session (3,754 once invoked), scanned A, original, MIT.

A guide to making software handle much larger numbers of users and requests. It explains how to find bottlenecks and choose between adding resources to one server or spreading work across several.

In plain words
What is it for?
Use it for growth planning, performance diagnosis, capacity estimates, infrastructure sizing, and designs intended to handle 10 to 1000 times the current load.
Why use it?
It helps prevent slowdowns and failures when an application grows, while avoiding infrastructure decisions based only on guesswork.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: positional $N argument.

Part of the cto-team plugin — 12 skills, 4 commands, 3 agents shipped together

Good fit Use it for growth planning, performance diagnosis, capacity estimates, infrastructure sizing, and designs intended to handle 10 to 1000 times the current load.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/alirezarezvani/claude-cto-team/scalability-advisor
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.

Any agent
npx skills add alirezarezvani/claude-cto-team --skill scalability-advisor
Clone the repo
git clone --depth 1 https://github.com/alirezarezvani/claude-cto-team

Made for: Claude Code.

Or install cto-team, the plugin that ships this one along with the rest of its 12 skills, 4 commands, 3 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 scalability-advisor

README.md
[![agentmods](https://agentmods.dev/badge/skills/alirezarezvani/claude-cto-team/scalability-advisor/github.svg)](https://agentmods.dev/skills/alirezarezvani/claude-cto-team/scalability-advisor)
Your own site
<a href="https://agentmods.dev/skills/alirezarezvani/claude-cto-team/scalability-advisor"><img src="https://agentmods.dev/badge/skills/alirezarezvani/claude-cto-team/scalability-advisor/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 scalability-advisor

Your own site · 80×15
<a href="https://agentmods.dev/skills/alirezarezvani/claude-cto-team/scalability-advisor"><img src="https://agentmods.dev/badge/skills/alirezarezvani/claude-cto-team/scalability-advisor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,754 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 $0.00045 $0.03754
Opus 5 $0.00023 $0.01877
Sonnet 5 $0.00009 $0.00751
Haiku 4.5 $0.00005 $0.00375

Measured 10d ago against content hash 43939b61c153, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

scalability-advisor 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 10d 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.

skills/scalability-advisor/SKILL.md · 466 lines

How it starts

The opening of the file, as written. The whole thing — 466 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Scalability Advisor

Provides systematic guidance for scaling systems at different growth stages, identifying bottlenecks, and designing for horizontal scalability.

When to Use

  • Planning for 10x, 100x, or 1000x growth
  • Diagnosing current performance bottlenecks
  • Designing new systems for scale
  • Evaluating scaling strategies (vertical vs. horizontal)
  • Capacity planning and infrastructure sizing

Scaling Stages Framework

Stage Overview

┌─────────────────────────────────────────────────────────────────────┐
│                    SCALING JOURNEY                                  │
├─────────────────────────────────────────────────────────────────────┤
│                                                                     │
│  Stage 1        Stage 2         Stage 3         Stage 4             │
│  Startup        Growth          Scale           Enterprise          │
│  0-10K users    10K-100K        100K-1M         1M+ users           │
│                                                                     │
│  Single         Add caching,    Horizontal      Global,             │
│  server         read replicas   scaling         multi-region        │
│                                                                     │
│  $100/mo        $1K/mo          $10K/mo         $100K+/mo           │
└─────────────────────────────────────────────────────────────────────┘

Stage 1: Startup (0-10K Users)

Architecture

┌────────────────────────────────────────┐
│           Single Server                │
│  ┌──────────────────────────────────┐  │
│  │  App Server (Node/Python/etc)    │  │
│  │  + Database (PostgreSQL)         │  │
│  │  + File Storage (local/S3)       │  │
│  └──────────────────────────────────┘  │
└────────────────────────────────────────┘

Key Metrics

Metric Target Warning
Response time (P95) < 500ms > 1s
Database queries/request < 10 > 20
Server CPU < 70% > 85%
Database connections < 50% pool > 80% pool

Read the full file on GitHub · 466 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. 10d ago First seen · 466 lines · 45 tokens per session scan A 43939b61c153

Subscribe to this mod's changes

scalability-advisor is a skill published in the GitHub repository alirezarezvani/claude-cto-team (113 stars, last pushed 8mo ago), licensed MIT. It adds 45 tokens to every session and 3,754 once invoked, about $0.0002 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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