Borrowing it
Nothing to install: this file belongs to robisson/build-like-amazon-agent-skills. 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/robisson/build-like-amazon-agent-skills/main/CLAUDE.mdgit clone --depth 1 https://github.com/robisson/build-like-amazon-agent-skillsWrote 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/robisson/build-like-amazon-agent-skills/claude-md)<a href="https://agentmods.dev/instructions/robisson/build-like-amazon-agent-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/robisson/build-like-amazon-agent-skills/claude-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/robisson/build-like-amazon-agent-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/robisson/build-like-amazon-agent-skills/claude-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 | $0.03231 | $0.03231 |
| Opus 5.5 | $0.01292 | $0.01292 |
| Sonnet 5.5 | $0.00646 | $0.00646 |
| Haiku 4.5 | $0.00323 | $0.00323 |
Grade A, and why
build-like-amazon-agent-skills 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 20d 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.
How it starts
The opening of the file, as written. The whole thing — 145 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
You are operating in a project that uses Build Like Amazon Agent Skills — a structured set of engineering workflows based on Amazon's Working Backwards methodology and operational excellence culture.
Skills Directory
All skills are located in skills/. Each skill is a directory with a SKILL.md file (and optionally templates/). Agent personas are in agents/.
Use skills/using-amazon-skills/SKILL.md as the meta-skill when the user does not invoke a slash command and the right workflow is unclear. It routes ambiguous requests to the correct lifecycle phase and skill chain.
Slash Commands
When the user invokes a slash command, read the corresponding command file in .claude/commands/ and follow it:
| Command | Command File | What It Does |
|---|---|---|
/onboard |
.claude/commands/onboard.md |
Reverse-engineer an existing project — produce Design Doc, API contracts, baseline Threat Model from existing code, IaC, observability. Run once per brownfield project. 3 paths: anchor only / validate the why (inferred PR/FAQ + bar-raiser questions) / forward WB + gap analysis. |
/wb |
.claude/commands/wb.md |
Full Working Backwards cycle (5 stages with approval gates) |
/listen |
.claude/commands/listen.md |
Stage 1: Who is the customer? |
/define |
.claude/commands/define.md |
Stage 2: What is the problem? |
/invent |
.claude/commands/invent.md |
Stage 3: What is the solution? |
/refine |
.claude/commands/refine.md |
Stage 4: Write the PR/FAQ |
/test-idea |
.claude/commands/test-idea.md |
Stage 5: How will we measure success? |
/design |
.claude/commands/design.md |
Full design flow (Dependency/Flag/Ops Context → Design Doc → API → Threat Model → Review → Specs) |
/spec |
.claude/commands/spec.md |
Create a single new spec (when design already exists) |
/build |
.claude/commands/build.md |
Execute spec tasks (wave-by-wave, parallel, autonomous) |
/review |
.claude/commands/review.md |
Code review with bar raiser mentality |
/deploy |
.claude/commands/deploy.md |
Progressive deployment with auto-rollback |
/operate |
.claude/commands/operate.md |
Operational readiness and runbook generation |
/learn |
.claude/commands/learn.md |
COE — blameless post-incident analysis |
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.
- 20d ago Changed · +1 lines · +86 tokens per session 1b218a3f862d
- 25d ago Changed · +1 lines · +195 tokens per session 641ae3b85714
- 1mo ago Changed · +2 lines · +390 tokens per session 912849dc51d6
- 1mo ago First seen · 141 lines · 2,560 tokens per session scan A 483d4a0510ae
build-like-amazon-agent-skills CLAUDE.md is an instructions file published in the GitHub repository robisson/build-like-amazon-agent-skills (16 stars, last pushed 20d ago), licensed MIT. It adds 3,231 tokens to every session, about $0.0129 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 2026-08-30.
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