publicapis_categories
List all categories in the Public APIs directory.
This record as markdown: /tools/io-github-malamutemayhem-unclick-mcp-server/publicapis-categories.md
What publicapis_categories does on UnClick
AI agents call publicapis_categories to retrieve information from UnClick without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why publicapis_categories is rated Low
This tool retrieves and lists categorical information from a public API directory. It performs a query operation that reads data without modifying, executing code, deleting, or creating financial obligations. The blast radius of misuse is negligible—an AI agent calling this repeatedly would only retrieve metadata about available API categories.
From the tool's definition Tool name 'publicapis_categories' and description 'List all categories in the Public APIs directory' indicate a retrieval operation with no side effects.
Attacks that exploit this kind of access
The rule that runs publicapis_categories safely
PolicyLayer is an MCP gateway: it sits between your AI agents and UnClick, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For publicapis_categories, this is the rule to start with:
publicapis_categories is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect UnClick, apply this rule, and every publicapis_categories call is checked against it from then on.
Questions about publicapis_categories
List all categories in the Public APIs directory. It is categorised as a Read tool in the UnClick MCP Server, which means it retrieves data without modifying state.
Register the UnClick MCP server in PolicyLayer and add a rule for publicapis_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 UnClick. Nothing to install.
publicapis_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 publicapis_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 publicapis_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.
publicapis_categories is provided by the UnClick MCP server (@unclick/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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