stack-baseline

stack-baseline is a skill for Claude Code from avelikiy/great_cto. It costs 126 tokens per session (1,110 once invoked), scanned A, original, MIT.

A fixed default technology stack for small and medium-sized business products. It defines preferred choices for frameworks, databases, authentication, payments, testing, hosting, and other common parts of an application.

In plain words
What is it for?
Use it as a baseline when starting or reviewing a product architecture, choosing implementation tools, or deciding whether a custom technology choice is justified.
Why use it?
It prevents each project from repeatedly making the same technology choices and keeps products consistent unless there is a documented reason to deviate.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the great-cto plugin — 40 skills, 44 commands, 72 agents shipped together

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.

agentmods
npx agentmods add skills/avelikiy/great_cto/stack-baseline
Any agent
npx skills add avelikiy/great_cto --skill stack-baseline
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, 72 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 stack-baseline

README.md
[![agentmods](https://agentmods.dev/badge/skills/avelikiy/great_cto/stack-baseline.svg)](https://agentmods.dev/skills/avelikiy/great_cto/stack-baseline)
Your own site
<a href="https://agentmods.dev/skills/avelikiy/great_cto/stack-baseline"><img src="https://agentmods.dev/badge/skills/avelikiy/great_cto/stack-baseline.svg" alt="Measured on agentmods" height="20"></a>
Per session 126 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,110 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00126 $0.01110
Opus 5 $0.00063 $0.00555
Sonnet 5 $0.00025 $0.00222
Haiku 4.5 $0.00013 $0.00111

Measured 2d ago against content hash dd78e731ce91, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

stack-baseline 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 2d 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/stack-baseline/SKILL.md · 72 lines

How it starts

The opening of the file, as written. The whole thing — 72 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Stack baseline — decide once, build on it

Every SMB product builds on the SAME proven stack unless there's a concrete reason not to. Re-deciding framework/ORM/auth/host per build wastes the first hour of every project and fragments the codebase across products. This is the default; deviate only with a written reason in ARCH.

The pinned stack

Layer Default Sanctioned alternative Notes
Framework Next.js (App Router, TS) Remix Server actions + RSC; one repo front+back
UI Tailwind + shadcn/ui matches the site; design-advisor tokens map to it
Charts (dashboard/analytics) ECharts (shipped) Recharts polished specs generated at build time via Flint → compiled to native ECharts; Flint is dev-only, never a runtime dep. Contract: references/dashboard-viz.md
DB Postgres the only DB; integer cents, tz-aware timestamps
ORM / migrations Drizzle Prisma typed schema + SQL migrations; migration-ready-schema applies
Auth Auth.js (NextAuth v5) Clerk (fast path, per-MAU cost) owned by auth-engineer; session + RBAC + multi-tenant
Payments Stripe (+ Connect) owned by subscription-billing-engineer / integrations-engineer
Email Resend Postmark transactional; SPF/DKIM/DMARC via lifecycle-messaging
SMS Twilio (Messaging Service) Telnyx 10DLC; consent via lifecycle-messaging
File storage Cloudflare R2 / S3 private buckets, presigned URLs
Background jobs Inngest a Postgres-backed queue reminders, syncs, dunning
Testing Vitest (unit) + Playwright (e2e) senior-dev unit; e2e-test-engineer browser
Hosting Vercel Cloudflare Pages/Workers Next.js-native; preview per PR
DB host Neon (serverless PG) Supabase branchable; env-wired by infra-provisioner
Observability Sentry errors + traces on the deployed product
Analytics privacy-light (Plausible) no heavy 3rd-party trackers

Read the full file on GitHub · 72 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. 2d ago First seen · 72 lines · 126 tokens per session scan A dd78e731ce91

Subscribe to this mod's changes

stack-baseline is a skill published in the GitHub repository avelikiy/great_cto (89 stars, last pushed yesterday), licensed MIT. It adds 126 tokens to every session and 1,110 once invoked, about $0.0006 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.

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