Genera una versión en texto ASCII / Unicode del diagrama. Es ideal para visualizar diagramas
AI agents call render_ascii_art to retrieve information from PlantUML MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool takes existing diagram data and transforms it into ASCII/Unicode text format for display purposes. It has no side effects, does not modify underlying data, and does not execute code or external operations. It is a read-only retrieval and rendering function.
From the tool's definition Tool generates and returns a text representation (ASCII/Unicode) of a diagram. The description indicates it 'generates a version' and is 'ideal for visualizing diagrams'—purely retrieving a rendered output without modifying, deleting, or executing external…
Attacks that exploit this kind of access
Genera una versión en texto ASCII / Unicode del diagrama. Es ideal para visualizar diagramas. It is categorised as a Read tool in the PlantUML MCP Server MCP Server, which means it retrieves data without modifying state.
Register the PlantUML MCP Server MCP server in PolicyLayer and add a rule for render_ascii_art: 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 PlantUML MCP Server. Nothing to install.
render_ascii_art 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 render_ascii_art 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 render_ascii_art. 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.
render_ascii_art is provided by the PlantUML MCP Server MCP server (ka1lak/prompt2diagram-mcp). 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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