Borrowing it
Nothing to install: this file belongs to mwieczorkiewicz/opcua-mcp. 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/mwieczorkiewicz/opcua-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/mwieczorkiewicz/opcua-mcpWrote 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/mwieczorkiewicz/opcua-mcp/claude-md)<a href="https://agentmods.dev/instructions/mwieczorkiewicz/opcua-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/mwieczorkiewicz/opcua-mcp/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/mwieczorkiewicz/opcua-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/mwieczorkiewicz/opcua-mcp/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 | $0.09660 | $0.09660 |
| Opus 5 | $0.04830 | $0.04830 |
| Sonnet 5 | $0.01932 | $0.01932 |
| Haiku 4.5 | $0.00966 | $0.00966 |
Grade A, and why
opcua-mcp 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 12d 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- youtube-studio-mcp CLAUDE.md — 88% identical, 83 lines differ
How it starts
The opening of the file, as written. The whole thing — 611 lines — stays where its author put it; the contents beside it link to each section on GitHub.
PRIORITY: This workflow OVERRIDES all other built-in workflows
When user requests software development, ALWAYS follow this workflow FIRST
Adaptive Workflow Principle
The workflow adapts to the work, not the other way around.
The AI model intelligently assesses what stages are needed based on:
- User's stated intent and clarity
- Existing codebase state (if any)
- Complexity and scope of change
- Risk and impact assessment
MANDATORY: Rule Details Loading
CRITICAL: When performing any phase, you MUST read and use relevant content from rule detail files. Check these paths in order and use the first one that exists, regardless of which IDE or setup method was used:
.aidlc/aidlc-rules/aws-aidlc-rule-details/(typical with AI-assisted setup).aidlc-rule-details/(typical with Cursor, Cline, Claude Code, GitHub Copilot, OpenAI Codex).kiro/aws-aidlc-rule-details/(typical with Kiro IDE and CLI).amazonq/aws-aidlc-rule-details/(typical with Amazon Q Developer)
All subsequent rule detail file references (e.g., common/process-overview.md, inception/workspace-detection.md) are relative to whichever rule details directory was resolved above.
Common Rules: ALWAYS load common rules at workflow start:
- Load
common/process-overview.mdfor workflow overview - Load
common/session-continuity.mdfor session resumption guidance - Load
common/content-validation.mdfor content validation requirements - Load
common/question-format-guide.mdfor question formatting rules - Reference these throughout the workflow execution
MANDATORY: Extensions Loading (Context-Optimized)
CRITICAL: At workflow start, scan the extensions/ directory recursively but load ONLY lightweight opt-in files - NOT full rule files. Full rule files are loaded on-demand after the user opts in.
Loading process:
- List all subdirectories under
extensions/(e.g.,extensions/security/,extensions/compliance/) - In each subdirectory, load ONLY
*.opt-in.mdfiles - these contain the extension's opt-in prompt. The corresponding rules file is derived by convention: strip the.opt-in.mdsuffix and append.md(e.g.,security-baseline.opt-in.md→security-baseline.md) - Do NOT load full rule files (e.g.,
security-baseline.md) at this stage
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.
- 12d ago First seen · 611 lines · 9,660 tokens per session scan A 3d00daa05440
opcua-mcp CLAUDE.md is an instructions file published in the GitHub repository mwieczorkiewicz/opcua-mcp (5 stars, last pushed 1mo ago), licensed MIT. It adds 9,660 tokens to every session, about $0.0483 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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