AI agents call get_diagram_examples to retrieve information from Mermaid without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
diagramType | string | Yes |
Parameters from the server's own tool schema.
This tool retrieves example diagrams for reference purposes. It has no side effects, does not execute code or trigger external operations, does not modify data, and does not involve financial transactions. It is a straightforward data retrieval operation consistent with the Read category.
From the tool's definition Tool name 'get_diagram_examples' and description 'get examples of a diagram' indicate retrieval of example data without modification or execution.
Attacks that exploit this kind of access
get examples of a diagram. It is categorised as a Read tool in the Mermaid MCP Server, which means it retrieves data without modifying state.
get_diagram_examples accepts 1 parameter: diagramType. Required: diagramType. The full parameter table on this page comes from the server's own tool schema.
Register the Mermaid MCP server in PolicyLayer and add a rule for get_diagram_examples: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Mermaid. Nothing to install.
get_diagram_examples is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_diagram_examples rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for get_diagram_examples. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
get_diagram_examples is provided by the Mermaid MCP server (mermaid-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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