claude-code-sub-agents CLAUDE.md

claude-code-sub-agents CLAUDE.md is an instructions file for coding agents from lst97/claude-code-sub-agents. It costs 2,339 tokens per session, scanned A, original, MIT.

A set of instructions for full-stack software development, covering planning, architecture, coding style, and testing across the user interface, server, and database.

In plain words
What is it for?
Use it to plan and implement features that span the front end, back end, database, and integrations while documenting stages and success criteria.
Why use it?
It gives an agent a consistent way to understand an existing codebase, keep designs simple, and deliver work in small, tested stages.

Instructions file

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 instructions/lst97/claude-code-sub-agents/claude-md
Clone the repo
git clone --depth 1 https://github.com/lst97/claude-code-sub-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.

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README.md
[![agentmods](https://agentmods.dev/badge/instructions/lst97/claude-code-sub-agents/claude-md.svg)](https://agentmods.dev/instructions/lst97/claude-code-sub-agents/claude-md)
Your own site
<a href="https://agentmods.dev/instructions/lst97/claude-code-sub-agents/claude-md"><img src="https://agentmods.dev/badge/instructions/lst97/claude-code-sub-agents/claude-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 2,339 This file is loaded in full into every session.
When invoked 2,339 The same file — it is already loaded in full.
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 $0.02339 $0.02339
Opus 5 $0.01170 $0.01170
Sonnet 5 $0.00468 $0.00468
Haiku 4.5 $0.00234 $0.00234

Measured 4d ago against content hash d03da932184d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

claude-code-sub-agents CLAUDE.md 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 4d 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.md · 266 lines

How it starts

The opening of the file, as written. The whole thing — 266 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Full Stack Development Guidelines

Philosophy

Core Beliefs

  • Iterative delivery over massive releases – Ship small, working slices of functionality from database to UI.
  • Understand before you code – Explore both front-end and back-end patterns in the existing codebase.
  • Pragmatism over ideology – Choose tools and architectures that serve the project’s goals, not personal preference.
  • Readable code over clever hacks – Optimize for the next developer reading your code, not for ego.

Simplicity Means

  • One clear responsibility per module, class, or API endpoint.
  • Avoid premature frameworks, libraries, or abstractions.
  • While latest and new technology is considerable, stable and efficient should be prioritized.
  • If your integration flow diagram needs an explanation longer than 3 sentences, it’s too complex.

Process

1. Planning & Staging

Break work into 3–5 cross-stack stages (front-end, back-end, database, integration). Document in IMPLEMENTATION_PLAN.md:

## Stage N: [Name]
**Goal**: [Specific deliverable across the stack]  
**Success Criteria**: [User story + passing tests]  
**Tests**: [Unit, integration, E2E coverage]  
**Status**: [Not Started|In Progress|Complete]
  • Update status after each merge.
  • Delete the plan file after all stages are verified in staging and production.

2. Implementation Flow

  • Understand – Identify existing patterns for UI, API, DB, and CI/CD.
  • Test First – For back-end, write API integration tests; for front-end, write component/unit tests.
  • Implement Minimal – Just enough code to pass all tests.
  • Refactor Safely – Clean code with test coverage at 60%+ for changed areas.
  • Commit Clearly – Reference plan stage, include scope (front-end, back-end, DB).

3. When Stuck (Max 3 Attempts)

  • Document Failures – Include console logs, stack traces, API responses, and network traces.
  • Research Alternatives – Compare similar solutions across different tech stacks.
  • Check Architecture Fit – Could this be a UI-only change? A DB query rewrite? An API contract change?
  • Try a Different Layer – Sometimes a front-end bug is a back-end response problem.

Read the full file on GitHub · 266 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. 4d ago First seen · 266 lines · 2,339 tokens per session scan A d03da932184d

Subscribe to this mod's changes

claude-code-sub-agents CLAUDE.md is an instructions file published in the GitHub repository lst97/claude-code-sub-agents (1,674 stars, last pushed 1y ago), licensed MIT. It adds 2,339 tokens to every session, about $0.0117 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.