backend

backend is a skill for Claude Code from AlexPEClub/ai-coding-starter-kit. It costs 22 tokens per session (914 once invoked), scanned A, original, no licence file.

A server-side development guide for building APIs, database structures, and application logic with Supabase, a hosted backend platform.

In plain words
What is it for?
Use it to create API endpoints, design database schemas, and implement server-side logic.
Why use it?
It gives you a defined place to handle data and backend behavior after the user interface is built.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

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/alexpeclub/ai-coding-starter-kit/backend
Any agent
npx skills add AlexPEClub/ai-coding-starter-kit --skill backend
Clone the repo
git clone --depth 1 https://github.com/AlexPEClub/ai-coding-starter-kit

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 backend

README.md
[![agentmods](https://agentmods.dev/badge/skills/alexpeclub/ai-coding-starter-kit/backend.svg)](https://agentmods.dev/skills/alexpeclub/ai-coding-starter-kit/backend)
Your own site
<a href="https://agentmods.dev/skills/alexpeclub/ai-coding-starter-kit/backend"><img src="https://agentmods.dev/badge/skills/alexpeclub/ai-coding-starter-kit/backend.svg" alt="Measured on agentmods" height="20"></a>
Per session 22 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 914 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00022 $0.00914
Opus 5 $0.00011 $0.00457
Sonnet 5 $0.00004 $0.00183
Haiku 4.5 $0.00002 $0.00091

Measured 6d ago against content hash 1d0128719f5c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

backend 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.

.claude/skills/backend/SKILL.md · 114 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 First seen · 114 lines · 22 tokens per session scan A 1d0128719f5c

Subscribe to this mod's changes

backend is a skill published in the GitHub repository AlexPEClub/ai-coding-starter-kit (371 stars, last pushed 3mo ago), with no licence file. It adds 22 tokens to every session and 914 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.

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