Returns the top-level structure of the Ray Group DeFi UX MCP corpus — every rubric area, every pattern slug, every glossary entry slug. Use this as a discovery tool before more specific queries: it lets the agent see what
AI agents call list_categories to retrieve information from Ray Group DeFi UX 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 and queries metadata about the structure of a DeFi UX assessment corpus (rubric areas, pattern slugs, glossary entry slugs). It has no side effects, does not execute code or commands, does not modify or delete data, and does not involve financial transactions. It is a discovery/browsing tool with minimal blast radius if misused by an AI agent.
From the tool's definition Tool name is 'list_categories' and description states it 'Returns the top-level structure' and 'lets the agent see what' — a read-only discovery/listing operation with no modification, deletion, or execution capability.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
Returns the top-level structure of the Ray Group DeFi UX MCP corpus — every rubric area, every pattern slug, every glossary entry slug. Use this as a discovery tool before more specific queries: it lets the agent see what. It is categorised as a Read tool in the Ray Group DeFi UX MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Ray Group DeFi UX MCP Server MCP server in PolicyLayer and add a rule for list_categories: 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 Ray Group DeFi UX MCP Server. Nothing to install.
list_categories 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 list_categories 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 list_categories. 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.
list_categories is provided by the Ray Group DeFi UX MCP Server MCP server (raygroup/raygroup-defi-ux-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.
Teams ship this data inside their own products. See what a licence covers →