Lista as 95 categorias de trabalho independente em Portugal cobertas por rendaextra.pt. Cada categoria tem um slug que pode ser usado em search_opportunities ou get_category.
AI agents call list_categories to retrieve information from Rendaextra without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and enumerates static category data from the rendaextra.pt service. It performs no modifications, deletions, or external operations—purely informational. The output serves as reference data for other tools (search_opportunities, get_category). Misuse by an AI agent would be benign (listing categories without acting on them causes no harm). Low blast radius and no destructive potential.
From the tool's definition Tool name 'list_categories' and description 'Lista as 95 categorias' (lists 95 categories) indicates a retrieval operation with no side effects. Returns category metadata (slug identifiers) for reference purposes.
Attacks that exploit this kind of access
Lista as 95 categorias de trabalho independente em Portugal cobertas por rendaextra.pt. Cada categoria tem um slug que pode ser usado em search_opportunities ou get_category. It is categorised as a Read tool in the Rendaextra MCP Server, which means it retrieves data without modifying state.
Register the Rendaextra 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 Rendaextra. 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 Rendaextra MCP server (rafaellopes/rendaextra-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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