// SCAN REPORT

Mcp Mermiad

9 tools. 3 can modify or destroy data without limits.

3 write tools that can modify data. Rate limits recommended.

Last updated: 11 Jun 2026

3 can modify or destroy data

6 read-only

9 tools total

Community server · catalogue entry verified 11/06/2026

How to control Mcp Mermiad ↓

TOOL MAP

What Mcp Mermiad exposes to your agents

Read (6) Write / Execute (3) Destructive / Financial (0)

Running more than one server? Check your whole stack →

MOST DANGEROUS TOOLS

High Risk

The most dangerous Mcp Mermiad tools

Write · Low convertDiagram This tool performs format conversion—a reversible write operation that produces new file outputs (SVG, PNG, PDF) from input diagrams. Write · Low createCustomTemplate This tool creates and stores a custom template within the current session. Write · Low generateDiagram This tool creates new diagram files in SVG format.

3 of Mcp Mermiad's 9 tools can modify, destroy, or commit something on every call — and an agent calls them with no built-in limits.

POLICY

How to control Mcp Mermiad

PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Mermiad, and nothing reaches the server without passing your rules. These are the rules we recommend:

Rate limit write operations

{
  "convertDiagram": {
    "limits": [
      {
        "counter": "convertdiagram_per_hour",
        "window": "hour",
        "max": 30,
        "scope": "grant"
      }
    ]
  }
}

Prevents bulk unintended modifications from agents caught in loops.

Cap read operations

{
  "getDiagramInfo": {
    "limits": [
      {
        "counter": "getdiagraminfo_per_minute",
        "window": "minute",
        "max": 60,
        "scope": "grant"
      }
    ]
  }
}

Controls API costs and prevents retry loops from exhausting upstream rate limits.

Create a free account and register Mcp Mermiad — nothing to install.
Add these rules — paste them, or build them visually. Tune the limits to your setup.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

ENFORCE POLICY ON MCP MERMIAD →

Free to start. No card required.

FULL CATALOGUE

All 9 Mcp Mermiad tools

WRITE 3 tools

Write convertDiagram Convert diagram to different formats. Currently supports SVG (PNG/PDF coming soon). Write createCustomTemplate Create a custom template from diagram code for reuse in current session. Write generateDiagram Generate and render a Mermaid diagram to SVG file. Supports all 22+ diagram types with advanced layout options

READ 6 tools

Read getDiagramInfo Analyze diagram code and return metadata (type, complexity, node/edge count, estimated render time). Read getTemplate Get a specific diagram template by ID with complete code and metadata. Read listSupportedTypes List all supported Mermaid diagram types (22+ types including flowchart, sequence, class, etc.). Read listTemplates List available pre-built diagram templates (50+ templates) by category or type. Read searchTemplates Search templates by keyword (name, description, type, tags, or code content). Read validateDiagram Validate Mermaid diagram syntax and provide detailed error messages and suggestions.

FAQ

Questions about Mcp Mermiad

How do I prevent bulk modifications through Mcp Mermiad? +

The Mcp Mermiad server has 3 write tools including convertDiagram, createCustomTemplate, generateDiagram. Set a rate limit in your policy -- for example, 10 calls per hour prevents an agent from making more than 10 modifications per hour. PolicyLayer enforces this at the gateway, before calls reach Mcp Mermiad.

How many tools does the Mcp Mermiad MCP server expose? +

9 tools across 2 categories: Read, Write. 6 are read-only. 3 can modify, create, or delete data.

How do I enforce a policy on Mcp Mermiad? +

Register the Mcp Mermiad MCP server in PolicyLayer, apply the suggested rules above (adjust the limits to your use case), and point your AI client at the PolicyLayer proxy URL instead of the server directly. Your agents keep the same tools; PolicyLayer evaluates every call against policy before it executes. Nothing to install, live in minutes.

Enforce policy on every Mcp Mermiad tool call.

Deterministic rules across all 9 Mcp Mermiad tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

ENFORCE POLICY ON MCP MERMIAD →

Free to start. No card required.

9 Mcp Mermiad tools catalogued and risk-classified — across an index of 43,000+ MCP servers.