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 rules/nwiizo/tfmcp/003_mcpgit clone --depth 1 https://github.com/nwiizo/tfmcpWrote 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/rules/nwiizo/tfmcp/003_mcp)<a href="https://agentmods.dev/rules/nwiizo/tfmcp/003_mcp"><img src="https://agentmods.dev/badge/rules/nwiizo/tfmcp/003_mcp.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 | $0.00196 | $0.00196 |
| Opus 5 | $0.00098 | $0.00098 |
| Sonnet 5 | $0.00039 | $0.00039 |
| Haiku 4.5 | $0.00020 | $0.00020 |
Grade A, and why
003_mcp 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 4d 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
MCP Protocol Implementation
Protocol Compliance
- Follow the Model Context Protocol specification.
- Implement required methods like
resources/listandprompts/list. - Ensure proper JSON-RPC 2.0 formatting for all messages.
- Handle protocol errors gracefully.
Server Implementation
- Use stdin/stdout for communication in MCP server mode.
- Implement proper error handling and response formatting.
- Provide meaningful error messages for debugging.
- Log MCP interactions appropriately.
Claude Desktop Integration
- Ensure seamless integration with Claude Desktop.
- Set up proper environment variables for Claude Desktop.
- Support changing terraform directories at runtime.
- Document integration steps clearly.
Security Considerations
- Implement appropriate safeguards for sensitive operations.
- Consider permission boundaries for terraform operations.
- Validate inputs to prevent command injection.
- Add safety mechanisms like confirmation prompts for destructive operations.
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.
- 4d ago First seen · 33 lines · 196 tokens per session scan A 721e383ddc78
003_mcp is a cursor rule published in the GitHub repository nwiizo/tfmcp (371 stars, last pushed today), licensed MIT. It adds 196 tokens to every session, about $0.0010 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 cursor rules, from other repositories
about-codebase
General information about the Lineai MCP Server codebase and its purpose.
toc-readme
When updating README.md, the table of contents should contain only the second-level headings below it.
cursorrules
Robot control server. Do not move the physical robot without checking health first.
runwhen-infrastructure
Infrastructure conventions for scripts targeting Kubernetes and databases via RunWhen runners.
php-client-implementation
Guidelines for implementing MCP clients in PHP.
cursorrules
When the user asks about social media, use social-media-ai-mcp tools: schedulepost, generatehashtags, analyzeengagement, plancontentcalendar, getaudienceinsights.