// MCP TOOL REFERENCE

DIAGRAMS MCP TOOLS

9 tools from the Diagrams MCP MCP Server, categorised by risk level.

View the Diagrams MCP policy → Token cost: 1,727 tokens →

// ALL 9 DIAGRAMS MCP TOOLS

READ 6 tools

Read find_equivalent Find cross-provider equivalents for a diagram node by infrastructure role. Given a node name (e.g. 'EC2', ... Read list_categories List all infrastructure role categories with their mapped nodes. Use this to browse all available equivale... Read list_nodes List available node classes for a provider.service combo. Args: provider: Provider name (e.g. 'aws', '... Read list_providers List all available diagram providers (aws, gcp, azure, k8s, onprem, etc.). Use list_providers -> list_serv... Read list_services List service categories for a provider (e.g. 'aws' -> ['compute', 'database', ...]). Args: provider: P... Read search_nodes Search for diagram nodes by keyword across all providers and services. For targeted browsing when you know...

WRITE 3 tools

Write render_diagram Render a mingrammer/diagrams Python snippet to PNG and return the image. The code must be a complete Pytho... Write render_mermaid Render a Mermaid diagram definition and return the image with metadata. The definition should be valid Mer... Write render_plantuml Render a PlantUML diagram definition and return the image. The definition should be valid PlantUML syntax ...

// RUNNING THIS SERVER

The managed route: connect Diagrams MCP through the PolicyLayer gateway — every tool call above is checked against your policy before it runs, with a full audit log.

DIRECT INSTALL (UNMANAGED) npx -y pypi:diagrams-mcp-server

// FAQ

How many tools does the Diagrams MCP MCP server have? +

The Diagrams MCP MCP server exposes 9 tools across 2 categories: Read, Write.

How do I enforce policies on Diagrams MCP tools? +

Route the Diagrams MCP server through the PolicyLayer gateway. Define allow, deny, or approval rules per tool in the dashboard — they are enforced on every call before it reaches the server.

What risk categories do Diagrams MCP tools fall into? +

Diagrams MCP tools are categorised as Read (6), Write (3). Each category has a recommended default policy.

Let agents act without letting them run wild.

Route your MCP servers through PolicyLayer and every tool call is checked against your policy before it runs — allow, deny, or require approval. Per-identity grants. Full audit log. Live in minutes.

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