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/rm2thaddeus/pixel_detective/use-mcp-serversgit clone --depth 1 https://github.com/rm2thaddeus/Pixel_DetectiveWrote 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/rm2thaddeus/pixel_detective/use-mcp-servers)<a href="https://agentmods.dev/rules/rm2thaddeus/pixel_detective/use-mcp-servers"><img src="https://agentmods.dev/badge/rules/rm2thaddeus/pixel_detective/use-mcp-servers.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 | $0.00011 | $0.02433 |
| Opus 5 | $0.00005 | $0.01216 |
| Sonnet 5 | $0.00002 | $0.00487 |
| Haiku 4.5 | $0.00001 | $0.00243 |
Grade A, and why
use-mcp-servers 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.
How it starts
The opening of the file, as written. The whole thing — 248 lines — stays where its author put it; the contents beside it link to each section on GitHub.
MCP Interaction Rule for Pixel Detective
Repository: [Pixel_Detective](mdc:https:/github.com/rm2thaddeus/Pixel_Branches:
- main
- development
Available MCP Servers & Capabilities
1. GitHub MCP (mcp_github_*)
- Primary Use: Version control, repository management, collaboration workflows
- Capabilities:
- Search code, repositories, commits, issues, and PRs
- Read, create, update, or delete files
- Manage issues (create, list, comment, update) and pull requests (create, list, merge, update)
- Manage branches and tags
- When to Use: All code commits, file operations, issue tracking, PR management
2. Supabase MCP (mcp_supabase_*)
- Primary Use: Database interactions, backend data management
- Capabilities:
- Execute raw SQL queries
- Manage database schemas, tables, and data (CRUD operations)
- Seed databases and perform migrations/rollbacks
- When to Use: Database schema changes, data seeding, backend data operations
3. Browser Tools MCP (mcp_browser-tools_*)
- Primary Use: Frontend debugging, web analysis, performance optimization
- Capabilities:
- Capture console logs (standard and errors) and network logs
- Take screenshots for visual debugging
- Run comprehensive audits (accessibility, performance, SEO, best practices, Next.js)
- Wipe logs for clean debugging sessions
- When to Use: Debugging frontend issues, performance analysis, accessibility compliance
Browser Tools MCP Setup & Troubleshooting
⚠️ CRITICAL SETUP REQUIREMENTS: Browser Tools MCP requires three components to function properly:
- Chrome Extension - Captures browser data
- Browser Tools Server - Node.js middleware (port 3025)
- Browser Tools MCP - The MCP server itself
Setup Verification Steps:
# 1. Check Node.js version (requires v18+)
node --version
# 2. Start Browser Tools Server
npx @agentdeskai/browser-tools-server@latest
# 3. Verify server is running
netstat -an | findstr 3025 # Windows
# or
lsof -i :3025 # Mac/Linux
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 · 248 lines · 11 tokens per session scan A 0c5c0a57c992
use-mcp-servers is a cursor rule published in the GitHub repository rm2thaddeus/Pixel_Detective (21 stars, last pushed 7mo ago), licensed MIT. It adds 11 tokens to every session and 2,433 once invoked, about $0.0001 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.
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