Claude Code: Everything You Need to Know is a practical guide to using Claude Code, an AI coding assistant that can be extended with commands, skills, hooks, subagents, workflows, and external tool servers. Developers use it to learn Claude Code from basic prompting through team and automation setups. The catalogue entries are examples of the guide's Claude Code extensions and workflows.
Borrowing it
Nothing to install: this file belongs to wesammustafa/Claude-Code-Everything-You-Need-to-Know. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/wesammustafa/Claude-Code-Everything-You-Need-to-Know/main/AGENTS.mdgit clone --depth 1 https://github.com/wesammustafa/Claude-Code-Everything-You-Need-to-KnowWrote 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.
[](https://agentmods.dev/instructions/wesammustafa/claude-code-everything-you-need-to-know/agents-md)<a href="https://agentmods.dev/instructions/wesammustafa/claude-code-everything-you-need-to-know/agents-md"><img src="https://agentmods.dev/badge/instructions/wesammustafa/claude-code-everything-you-need-to-know/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/wesammustafa/claude-code-everything-you-need-to-know/agents-md"><img src="https://agentmods.dev/badge/instructions/wesammustafa/claude-code-everything-you-need-to-know/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.02138 | $0.02138 |
| Opus 5.5 | $0.00855 | $0.00855 |
| Sonnet 5.5 | $0.00428 | $0.00428 |
| Haiku 4.5 | $0.00214 | $0.00214 |
Grade A, and why
Claude-Code-Everything-You-Need-to-Know AGENTS.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 yesterday.
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.
How it starts
The opening of the file, as written. The whole thing — 55 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Rules for agents editing this guide
These rules apply when you edit this guide, a Markdown guide to learning Claude Code. If the user is learning Claude Code with this repo (running or changing its examples, asking questions), they do not apply: just help them. For anything this file does not cover (where to report problems, AI-assisted contributions, file layout, adding a skill), read CONTRIBUTING.md, the full contributor policy this file digests.
Verify every volatile claim
A volatile claim is anything that can go stale: a version or date; a price, plan availability, or usage or rate limit; a model name, model ID or default; the name or behavior of a command, flag, setting, environment variable, hook event, tool or frontmatter field; a stability label (copied word for word from Tier 1); any count or statistic; or a third-party status fact (owner, license, archived).
Before you write or change one, fetch the Tier 1 source for its domain:
| Claim domain | Tier 1 source |
|---|---|
| Claude Code behavior: commands, flags, settings, hook events, stability labels | code.claude.com/docs: find the page in https://code.claude.com/docs/llms.txt and fetch it with a .md suffix |
| When something shipped, versions, release channels | https://github.com/anthropics/claude-code/blob/main/CHANGELOG.md (search the raw file, https://raw.githubusercontent.com/anthropics/claude-code/main/CHANGELOG.md, for the version or feature rather than reading it whole), and npm view @anthropic-ai/claude-code dist-tags for latest and stable |
| Models, model IDs, API limits | https://platform.claude.com/docs |
| Plan prices and plan features | https://claude.com/pricing and the plan articles on https://support.claude.com |
| API prices | https://platform.claude.com/docs/en/about-claude/pricing |
| MCP protocol | https://modelcontextprotocol.io |
| GitHub behavior | https://docs.github.com |
| A third-party tool's install and usage | That tool's own repo or docs |
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.
- yesterday Changed · +1 lines · +70 tokens per session 19d716a38661
- 15d ago Changed · +77 tokens per session fc2d6eaee1ae
- 18d ago Changed · +32 tokens per session 8663660ca32d
- 19d ago First seen · 54 lines · 1,959 tokens per session scan A c959d4da8214
Claude-Code-Everything-You-Need-to-Know AGENTS.md is an instructions file published in the GitHub repository wesammustafa/Claude-Code-Everything-You-Need-to-Know (3,484 stars, last pushed 2d ago), licensed MIT. It adds 2,138 tokens to every session, about $0.0086 per session on Opus 5.5. 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 2026-10-06.
Other instructions, from other repositories
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next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
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langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.