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.
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.
npx skills add wesammustafa/Claude-Code-Everything-You-Need-to-Know --skill tddgit 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/skills/wesammustafa/claude-code-everything-you-need-to-know/tdd)<a href="https://agentmods.dev/skills/wesammustafa/claude-code-everything-you-need-to-know/tdd"><img src="https://agentmods.dev/badge/skills/wesammustafa/claude-code-everything-you-need-to-know/tdd/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/skills/wesammustafa/claude-code-everything-you-need-to-know/tdd"><img src="https://agentmods.dev/badge/skills/wesammustafa/claude-code-everything-you-need-to-know/tdd.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 | $0.00004 | $0.00240 |
| Opus 5.5 | $0.00002 | $0.00096 |
| Sonnet 5.5 | $0.00001 | $0.00048 |
| Haiku 4.5 | $0.00000 | $0.00024 |
Grade A, and why
tdd 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 9d 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.
What it actually says
Build this test-first, one behavior at a time: $ARGUMENTS
- Red: write one failing test for the next behavior. Run the tests and confirm that it fails, and fails for the reason you expect. Don't change code outside the tests in this step.
- Green: TODO
- Refactor: TODO
Repeat until the feature is done, then run the whole test suite and commit the tests and the code together.
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.
- 9d ago First seen · 20 lines · 4 tokens per session scan A d56324cd64a0
tdd is a skill published in the GitHub repository wesammustafa/Claude-Code-Everything-You-Need-to-Know (3,406 stars, last pushed yesterday), licensed MIT. It adds 4 tokens to every session and 240 once invoked, about $0.0000 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 2026-10-07.
Other skills, from other repositories
plan-pipeline-execute
Execute a validated plan: worktree isolation, TDD scaffolding, level-based parallel agents, quality gate with smoke test, PR creation and merge. Handles everything through to merged PR.
qa
Systematic QA testing of a web application: diff-aware, tiered, with fix-and-verify loop.
plan-pipeline-eng-review
Engineering architecture gate: lock architecture, diagrams, edge cases, and test matrix before writing implementation code.
ci-all
Full CI pipeline: run local tests, type check, push branch, and return the pipeline URL. The only command you need before opening a PR.
ci-tests
Run the test suite for the current repo, auto-detecting Python (pytest/uv), Node (vitest/pnpm), or Rust (cargo test).
generate-tests
Generate comprehensive tests for specified code.