Borrowing it
Nothing to install: this file belongs to RBraga01/builder-product. 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/RBraga01/builder-product/master/CLAUDE.mdgit clone --depth 1 https://github.com/RBraga01/builder-productWrote 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/rbraga01/builder-product/claude-md)<a href="https://agentmods.dev/instructions/rbraga01/builder-product/claude-md"><img src="https://agentmods.dev/badge/instructions/rbraga01/builder-product/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/rbraga01/builder-product/claude-md"><img src="https://agentmods.dev/badge/instructions/rbraga01/builder-product/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 | $0.00473 | $0.00473 |
| Opus 5.5 | $0.00189 | $0.00189 |
| Sonnet 5.5 | $0.00095 | $0.00095 |
| Haiku 4.5 | $0.00047 | $0.00047 |
Grade A, and why
builder-product 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 2mo 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
builder-product — Claude Configuration
Pack Version
builder-product — AI Product Skills Pack v1.0.0
File Conventions
| Artifact | Path |
|---|---|
| PRDs | product/prd/<feature>-<date>.md |
| Feature scopes | product/scopes/<feature>-<date>.md |
| Metric plans | product/metrics/<feature>-<date>.md |
| Research synthesis | product/research/<project>-synthesis-<date>.md |
| Experiment designs | product/experiments/<feature>-design-<date>.md |
| AI feature validations | product/ai-validation/<feature>-<date>.md |
| Product critiques | product/reviews/<feature>/<date>-product-critique.md |
Skill Trigger Sequence
For any new feature:
mvp-scope-validator→ before any PRD, when the idea may be over-scoped — extract hypothesis and define minimum scopeprd-quality-gate→ defines the problem and success metricfeature-scoping→ written scope before any estimatemetric-definition→ measurement plan with baselines before codeai-feature-validation→ required if any LLM call is involveduser-research-synthesis→ if any research was done, synthesise before using itab-test-design→ before any experiment that informs a ship/no-ship decision
Agent Usage
| Agent | When to Use |
|---|---|
product-critic |
After writing any PRD or feature spec, before engineering time is committed |
metric-designer |
When designing measurement frameworks for new features |
research-synthesiser |
After user research sessions, before decisions are made |
What Makes This Pack Different From Generic Product Frameworks
Standard product frameworks produce documents. This pack produces decisions:
- Every PRD has a measurable success metric with a baseline
- Every estimate references a written scope
- Every research report has an insight → decision chain
- Every AI feature addresses hallucination UX, trust calibration, and reversibility
A completed gate means a decision was made. Not a document was written.
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.
- 2mo ago First seen · 48 lines · 473 tokens per session scan A 2662db249fd2
builder-product CLAUDE.md is an instructions file published in the GitHub repository RBraga01/builder-product (2 stars, last pushed 14d ago), licensed MIT. It adds 473 tokens to every session, about $0.0019 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 2026-08-31.
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