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 Bbeierle12/Skill-MCP-Claude --skill product-self-knowledgegit clone --depth 1 https://github.com/Bbeierle12/Skill-MCP-ClaudeWrote 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/bbeierle12/skill-mcp-claude/product-self-knowledge)<a href="https://agentmods.dev/skills/bbeierle12/skill-mcp-claude/product-self-knowledge"><img src="https://agentmods.dev/badge/skills/bbeierle12/skill-mcp-claude/product-self-knowledge/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/bbeierle12/skill-mcp-claude/product-self-knowledge"><img src="https://agentmods.dev/badge/skills/bbeierle12/skill-mcp-claude/product-self-knowledge.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 | $0.00051 | $0.00516 |
| Opus 5 | $0.00026 | $0.00258 |
| Sonnet 5 | $0.00010 | $0.00103 |
| Haiku 4.5 | $0.00005 | $0.00052 |
Grade A, and why
product-self-knowledge 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 11d 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
Anthropic Product Knowledge
Core Principles
- Accuracy over guessing - Check official docs when uncertain
- Distinguish products - Claude.ai, Claude Code, and Claude API are separate products
- Source everything - Always include official documentation URLs
- Right resource first - Use the correct docs for each product (see routing below)
Question Routing
Claude API or Claude Code questions?
→ Check the docs maps first, then navigate to specific pages:
- Claude API & General: https://docs.claude.com/en/docs_site_map.md
- Claude Code: https://docs.anthropic.com/en/docs/claude-code/claude_code_docs_map.md
Claude.ai questions?
→ Browse the support page:
- Claude.ai Help Center: https://support.claude.com
Response Workflow
- Identify the product - API, Claude Code, or Claude.ai?
- Use the right resource - Docs maps for API/Code, support page for Claude.ai
- Verify details - Navigate to specific documentation pages
- Provide answer - Include source link and specify which product
- If uncertain - Direct user to relevant docs: "For the most current information, see [URL]"
Quick Reference
Claude API:
- Documentation: https://docs.claude.com/en/api/overview
- Docs Map: https://docs.claude.com/en/docs_site_map.md
Claude Code:
- Documentation: https://docs.claude.com/en/docs/claude-code/overview
- Docs Map: https://docs.anthropic.com/en/docs/claude-code/claude_code_docs_map.md
- npm Package: https://www.npmjs.com/package/@anthropic-ai/claude-code
Claude.ai:
- Support Center: https://support.claude.com
- Getting Help: https://support.claude.com/en/articles/9015913-how-to-get-support
Other:
- Product News: https://www.anthropic.com/news
- Enterprise Sales: https://www.anthropic.com/contact-sales
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 11d ago First seen · 66 lines · 51 tokens per session scan A b79b06a0a6bf
product-self-knowledge is a skill published in the GitHub repository Bbeierle12/Skill-MCP-Claude (8 stars, last pushed today), licensed MIT. It adds 51 tokens to every session and 516 once invoked, about $0.0003 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 2026-08-31.
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