Return the canonical taxonomy of known tag titles and source titles in the knowledge base.
AI agents call get_knowledge_taxonomy to retrieve information from Cartesi Knowledge MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool purely retrieves structural information about available tags and sources in the knowledge base. It has no side effects, cannot modify data, and cannot trigger external operations. It is a straightforward query operation on static reference metadata, making it a low-severity Read category tool.
From the tool's definition Tool returns taxonomy metadata from a knowledge base with no ability to modify, delete, or execute operations. Description indicates read-only access: 'Return the canonical taxonomy' and server is explicitly described as 'read-only knowledge access.'
Attacks that exploit this kind of access
Return the canonical taxonomy of known tag titles and source titles in the knowledge base. It is categorised as a Read tool in the Cartesi Knowledge MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Cartesi Knowledge MCP Server MCP server in PolicyLayer and add a rule for get_knowledge_taxonomy: 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 Cartesi Knowledge MCP Server. Nothing to install.
get_knowledge_taxonomy 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_knowledge_taxonomy 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_knowledge_taxonomy. 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_knowledge_taxonomy is provided by the Cartesi Knowledge MCP Server MCP server (mugen-builders/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
get_knowledge_taxonomy is one line of Cartesi Knowledge MCP Server's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
Teams ship this data inside their own products. See what a licence covers →