before-backend-dev

before-backend-dev is a command for Claude Code from qingyu321/Little-Claude. It costs 0 tokens per session (138 once invoked), scanned A, a copy of before-backend-dev, Apache-2.0.

A required preparation command for backend development, covering server-side code such as databases, error handling, logging, and types.

In plain words
What is it for?
Use it before backend work to read the general guidance and the relevant database, error-handling, logging, or type-safety instructions.
Why use it?
It helps developers find the project rules that apply before they write backend code, reducing inconsistent or incomplete implementations.

Command for Claude Code

Written for Claude Code: installed under .claude/.

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 commands/qingyu321/little-claude/before-backend-dev
Clone the repo
git clone --depth 1 https://github.com/qingyu321/Little-Claude

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 before-backend-dev

README.md
[![agentmods](https://agentmods.dev/badge/commands/qingyu321/little-claude/before-backend-dev.svg)](https://agentmods.dev/commands/qingyu321/little-claude/before-backend-dev)
Your own site
<a href="https://agentmods.dev/commands/qingyu321/little-claude/before-backend-dev"><img src="https://agentmods.dev/badge/commands/qingyu321/little-claude/before-backend-dev.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 138 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.00000 $0.00138
Opus 5 $0.00000 $0.00069
Sonnet 5 $0.00000 $0.00028
Haiku 4.5 $0.00000 $0.00014

Measured 6d ago against content hash 7e35444de2a5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

before-backend-dev 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.

Origin

This is a copy

100% identical to before-backend-dev — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/commands/trellis/before-backend-dev.md · 14 lines

What it actually says

Read the backend development guidelines before starting your development task.

Execute these steps:

  1. Read .trellis/spec/backend/index.md to understand available guidelines
  2. Based on your task, read the relevant guideline files:
    • Database work → .trellis/spec/backend/database-guidelines.md
    • Error handling → .trellis/spec/backend/error-handling.md
    • Logging → .trellis/spec/backend/logging-guidelines.md
    • Type questions → .trellis/spec/backend/type-safety.md
  3. Understand the coding standards and patterns you need to follow
  4. Then proceed with your development plan

This step is mandatory before writing any backend code.

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 · 14 lines · 0 tokens per session scan A 7e35444de2a5

Subscribe to this mod's changes

before-backend-dev is a command published in the GitHub repository qingyu321/Little-Claude (21 stars, last pushed 11d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 138 tokens. A static security scan graded it A with 0 findings. It is 100% identical to before-backend-dev, differing in 0 lines, and is treated as a copy.