Backend Dev Guidelines
langfuse/langfuse
Build or review Langfuse backend code. An agent skill from langfuse/langfuse.
The pinned default technology stack for SMB Product-Builder products.
$ npx skills add avelikiy/great_cto --skill stack-baseline -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install avelikiy/great_cto stack-baseline --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/avelikiy/great_cto.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/stack-baseline .claude/skills/stack-baseline && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "stack-baseline" agent skill from https://github.com/avelikiy/great_cto/tree/main/skills/stack-baseline into .claude/skills/stack-baseline/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "stack-baseline", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/avelikiy/great_cto/tree/main/skills/stack-baselineType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add avelikiy/great_cto --skill stack-baseline -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install avelikiy/great_cto stack-baseline --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/avelikiy/great_cto.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/stack-baseline .agents/skills/stack-baseline && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "stack-baseline" agent skill from https://github.com/avelikiy/great_cto/tree/main/skills/stack-baseline into .agents/skills/stack-baseline/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "stack-baseline", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add avelikiy/great_cto --skill stack-baseline -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install avelikiy/great_cto stack-baseline --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/avelikiy/great_cto.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/stack-baseline .cursor/skills/stack-baseline && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "stack-baseline" agent skill from https://github.com/avelikiy/great_cto/tree/main/skills/stack-baseline into .cursor/skills/stack-baseline/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "stack-baseline", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/avelikiy/great_cto.git --path skills/stack-baseline--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add avelikiy/great_cto --skill stack-baseline -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install avelikiy/great_cto stack-baseline --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/avelikiy/great_cto.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/stack-baseline .gemini/skills/stack-baseline && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "stack-baseline" agent skill from https://github.com/avelikiy/great_cto/tree/main/skills/stack-baseline into .gemini/skills/stack-baseline/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "stack-baseline", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install avelikiy/great_cto stack-baselineInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add avelikiy/great_cto --skill stack-baseline -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/avelikiy/great_cto.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/stack-baseline .github/skills/stack-baseline && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "stack-baseline" agent skill from https://github.com/avelikiy/great_cto/tree/main/skills/stack-baseline into .github/skills/stack-baseline/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "stack-baseline", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add avelikiy/great_cto --skill stack-baseline -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install avelikiy/great_cto stack-baseline --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/avelikiy/great_cto.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/stack-baseline .opencode/skills/stack-baseline && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "stack-baseline" agent skill from https://github.com/avelikiy/great_cto/tree/main/skills/stack-baseline into .opencode/skills/stack-baseline/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "stack-baseline", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
stack-baselineThe pinned default technology stack for SMB Product-Builder products.
Stack Baseline is an agent skill from avelikiy/great_cto. The pinned default technology stack for SMB Product-Builder products. One source of truth so the architect, app-scaffolder, auth-engineer, and senior-dev never re-decide the stack per build — they build ON it. Covers framework, ORM/DB, auth, UI, payments/email/SMS, files, jobs, testing, hosting, and observability, with the chosen default + the one sanctioned alternative for each. Applied whenever a new product is scaffolded or a stack choice would otherwise be improvised. Re-deciding the stack every build is the…
Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Databases, covering ORMs and data access, Project scaffolding and Observability. The repository describes itself as: You already have the agent. This is everything around it. greatcto runs Claude Code as a pipeline of 70 specialist agents — an independent model checks each stage before the next… The licence is MIT.
5 steps, taken from the first numbered list in SKILL.md.
Read from SKILL.md and the folder at commit 0658773. It shows what the files ask for, not the result of running them.
Pre-approves these tools, so the agent can use them without asking each time:
ReadWriteGrepGlobFrom allowed-tools in the SKILL.md frontmatter.
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Stack Baseline loads about 1.1k tokens when it runs. Until then it costs about 143 tokens; SKILL.md has 341 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
The full file from avelikiy/great_cto at commit 0658773, republished under its MIT licence (© avelikiy). 341 words, ~1,072 tokens.
.claude/skills/stack-baseline/SKILL.md (or your agent's skills folder).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.
| 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 |
| 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 |
.great_cto/PROJECT.md at scaffold time (stack: line) so every later
agent reads it instead of guessing — and an existing PROJECT.md's stack always wins.migration-ready-schema).When applied, write the stack into ARCH's Components section and PROJECT.md:
## Stack (baseline)
framework: Next.js (App Router, TS) · UI: Tailwind + shadcn
db: Postgres (Neon) · orm: Drizzle · auth: Auth.js (→ auth-engineer)
payments: Stripe · email: Resend · sms: Twilio · files: R2 · jobs: Inngest
test: Vitest + Playwright · host: Vercel · obs: Sentry
deviations: <none | reason>© avelikiy, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Just SKILL.md in skills/stack-baseline of avelikiy/great_cto.
Open the folder on GitHubat commit 0658773
Stack Baseline next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Stack Baseline this skillavelikiy/great_cto | 103 | — | ~1.1k | Automated safety check: Pass | MIT | |
| Backend Dev Guidelineslangfuse/langfuse | 35k | — | ~1.9k | Automated safety check: Pass | Custom licence | |
| Add Componentlbedner/aegis-stack | 143 | — | ~5.3k | Automated safety check: Pass | MIT | |
| AWS Harnesshoodini/ai-agents-skills | 282 | — | ~4.2k | Automated safety check: Notes | None | |
| Agent Observability Experiment Bootstrapdatadog-labs/agent-skills | 177 | — | ~2.3k | Automated safety check: Pass | MIT | |
| Otel Weaverollygarden/opentelemetry-agent-skills | 106 | — | ~2.7k | Automated safety check: Pass | Apache-2.0 |
langfuse/langfuse
Build or review Langfuse backend code. An agent skill from langfuse/langfuse.
lbedner/aegis-stack
A skill your agent uses when adding a new infrastructure component (worker, scheduler, database, redis, ingress, observability) to the Aegis Stack framework itself, or adding a new variant axis…
hoodini/ai-agents-skills
Build a new AI agent on AWS and deploy it easily, OR wrap and deploy an agent you already have, using the Amazon Bedrock AgentCore harness.
datadog-labs/agent-skills
Bootstrap a reproducible LLM Observability experiment through the Python ddtrace SDK or the Node dd-trace SDK.
ollygarden/opentelemetry-agent-skills
OpenTelemetry Weaver registry authoring, codegen, and CI enforcement.
planetscale/skills
Inspect an application repository connected to PlanetScale and recommend SQLCommenter-compatible query tagging packages and conventions.
avelikiy/great_cto
Analyzes a screenshot, website or Figma file and writes a `design.md` with its token system, component inventory and reconstruction notes, or an `element.md` for one element.
avelikiy/great_cto
Builds an Opportunity Solution Tree that links one measurable outcome to customer opportunities, candidate solutions and experiments.
avelikiy/great_cto
Rewrites a feature-list roadmap into outcome statements that name the customer segment, the result they get and the business impact, grouped into themes.
avelikiy/great_cto
Turns a leaked key, token or password into one tracked rotation task the moment it's spotted, instead of a reminder repeated every session.
avelikiy/great_cto
Spawns the decision-scorer agent after architect proposes 2+ variants in an ADR.
avelikiy/great_cto
Runs a three-round self-challenge plus an arbiter over high-stakes findings, so false positives from reviews, audits and flaky-test verdicts do not become blockers.
Categories
The pinned default technology stack for SMB Product-Builder products. Stack Baseline is an agent skill from avelikiy/great_cto. The pinned default technology stack for SMB Product-Builder products.
Stack Baseline fits situations like: tasks that involve ORMs and data access; tasks that involve Project scaffolding; tasks that involve Observability.
Run `npx skills add avelikiy/great_cto --skill stack-baseline -a claude-code`. Or copy the skill folder (skills/stack-baseline in avelikiy/great_cto) into .claude/skills/stack-baseline in your project. Claude Code loads it when a task matches its description.
Run `npx skills add avelikiy/great_cto --skill stack-baseline -a codex`. Or copy the skill folder (skills/stack-baseline in avelikiy/great_cto) into .agents/skills/stack-baseline in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add avelikiy/great_cto --skill stack-baseline -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/stack-baseline, .gemini/skills/stack-baseline, .github/skills/stack-baseline and .opencode/skills/stack-baseline in your project.
SKILL.md names no scripts, command-line tools or credentials: Stack Baseline is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Write, Grep, Glob.
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
Stack Baseline is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
About 1.1k tokens (SKILL.md is roughly 4.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
Skills that share tags, products or a category with Stack Baseline: Backend Dev Guidelines (langfuse/langfuse, 35k stars), Add Component (lbedner/aegis-stack, 143 stars), AWS Harness (hoodini/ai-agents-skills, 282 stars) and Agent Observability Experiment Bootstrap (datadog-labs/agent-skills, 177 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
avelikiy (a GitHub user) maintains it in avelikiy/great_cto, which has 103 GitHub stars. The repository holds 30 skills in this directory. The repository was last updated on October 6, 2026.
Source: avelikiy/great_cto on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.