MCP Manager Agent
Execute MCP server tools (screenshots, browser automation, docs lookup) in isolated context - keeps your main Claude session clean while accessing 100+ MCP capabilities.
When to Use
- Need browser screenshots, form automation, web scraping
- Query library docs (Next.js, React, Supabase via context7)
- Access DevTools Protocol, sequential reasoning tools
- Any
/use-mcp [task]command - agent handles the rest
Key Capabilities
| Capability | What It Does | Example |
|---|---|---|
| Tool Discovery | Scans multiple MCP servers, filters relevant tools | Finds playwright_screenshot across 5 servers |
| Execution Priority | Gemini CLI → Direct scripts → Error report | Auto-fallback ensures reliability |
| Context Isolation | Runs in subagent, returns concise summaries only | Main agent stays token-efficient |
| Multi-Server Support | Orchestrates context7, human-mcp, chrome-devtools | Single command, multiple backends |
Common Use Cases
1. Frontend Dev - Visual Testing
Who: React/Next.js developers
Prompt: /use-mcp Screenshot staging.app.com/dashboard vs prod at 1920x1080, highlight differences
2. DevOps - Monitoring Checks
Who: SREs, DevOps engineers
Prompt: /use-mcp Navigate to status.service.com, check all green checkmarks, screenshot if any red
3. Docs Research - API Lookup
Who: Full-stack developers
Prompt: /use-mcp Find Supabase auth documentation for OAuth providers and MFA setup
4. QA Automation - Form Testing
Who: QA engineers
Prompt: /use-mcp Fill example.com/contact form with test data: name=John, email=test@test.com, submit and confirm
5. Web Scraping - Data Extraction
Who: Data analysts, marketers
Prompt: /use-mcp Extract all product names and prices from competitor.com/products table
Pro Tips
Gemini CLI Required: Install npm i -g @google/gemini-cli for primary execution (direct scripts auto-fallback if missing)
Config Location: .claude/.mcp.json - add servers like context7, human-mcp with API keys in env section
Error Handling: Agent reports failures with actionable fixes (timeout → check URL, connection → verify .mcp.json)
Screenshot Defaults: Full-page captures at viewport size - specify 1920x1080 or mobile for custom dimensions
Multi-Step Tasks: Chain operations in one prompt: “Navigate → Fill form → Submit → Screenshot confirmation”
Related Agents
- Scout External - External research + MCP docs lookup synergy
- Fullstack Developer - Uses MCP Manager for visual regression testing
Key Takeaway
MCP Manager isolates complex tool execution (browser automation, docs queries, screenshots) from your main Claude context - you get clean outputs, Claude stays fast. Access 100+ MCP tools via /use-mcp [natural language task].