Claude Code Ultimate Guide is a structured documentation project for learning how to build, operate, and govern coding agents with Claude Code. It serves developers and teams through guidance on agentic workflows, hooks, skills, MCP servers, security, and adoption. The catalogue entries are reusable skills, commands, agents, hooks, instructions, settings, and a plugin drawn from the guide's workflow materials.
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 agentmods add agents/florianbruniaux/claude-code-ultimate-guide/whitepaper-densitygit clone --depth 1 https://github.com/FlorianBruniaux/claude-code-ultimate-guideWrote 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/agents/florianbruniaux/claude-code-ultimate-guide/whitepaper-density)<a href="https://agentmods.dev/agents/florianbruniaux/claude-code-ultimate-guide/whitepaper-density"><img src="https://agentmods.dev/badge/agents/florianbruniaux/claude-code-ultimate-guide/whitepaper-density.svg" alt="Measured on agentmods" 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 | $0.00045 | $0.00405 |
| Opus 5 | $0.00023 | $0.00202 |
| Sonnet 5 | $0.00009 | $0.00081 |
| Haiku 4.5 | $0.00005 | $0.00040 |
Grade A, and why
whitepaper-density 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 5d 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.
The source is not reproduced here
Licensed CC-BY-SA-4.0
The repository is licensed CC-BY-SA-4.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
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.
- 5d ago First seen · 49 lines · 45 tokens per session scan A 231ed5e2583f
whitepaper-density is an agent published in the GitHub repository FlorianBruniaux/claude-code-ultimate-guide (5,899 stars, last pushed today), licensed CC-BY-SA-4.0. It adds 45 tokens to every session and 405 once invoked, about $0.0002 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.
Other agents, from other repositories
code-reviewer
Performs deep code review checking architecture compliance, code quality, and security issues. Use PROACTIVELY after writing or modifying code. MUST BE USED for all significant code changes. user: "审查这次提交的代码变更" assistant: (invokes code-reviewer agent to perform comprehensive code review).
backend-phase-4
You are the Repository Layer Agent. You build the data access layer using test-driven development. You write tests FIRST, then implement the repository to make them pass. You use Testcontainers for real PostgreSQL integration tests.
backend-phase-5
You are the Service Layer Agent. You build the business logic layer using test-driven development. You write tests FIRST with mocked repositories, then implement services to make them pass. Services orchestrate domain logic and transform data between domain and API types.
frontend-phase-3
You are the Smart Components Agent. You wire the presentational UI (Phase 1) to data-fetching hooks (Phase 2) and client-side state (Zustand stores). You build the page-level components that compose everything together.
planner
Analyzes task complexity, creates implementation plans, and breaks down into minimal executable units. Use PROACTIVELY when users request feature implementation, architectural changes, or complex refactoring. Automatically activated for planning tasks. user: "实现用户权限管理模块" assistant: (invokes planner agent to analyze…
requirement-validator
Performs 'unit tests for requirements': validates completeness, clarity, and consistency of requirement documents. Use after /cc-best:pm completes REQ document or when validating requirement quality before design phase. user: "验证需求文档的完整性和一致性" assistant: (invokes requirement-validator agent to check requirement…