This record as markdown: /tools/io-github-malamutemayhem-unclick-mcp-server/xkcd-latest.md
What xkcd_latest does on UnClick
AI agents call xkcd_latest 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 xkcd_latest is rated Low
This tool fetches publicly available comic data from xkcd without modifying, executing, or deleting anything. It is a simple read-only query operation with minimal blast radius if misused—worst case an AI agent repeatedly fetches the same comic.
From the tool's definition Tool name 'xkcd_latest' and description 'Get the latest xkcd comic' indicate a retrieval operation with no side effects.
Attacks that exploit this kind of access
The rule that runs xkcd_latest 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 xkcd_latest, this is the rule to start with:
xkcd_latest 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 xkcd_latest call is checked against it from then on.
Questions about xkcd_latest
Get the latest xkcd comic. 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 xkcd_latest: 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.
xkcd_latest 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 xkcd_latest 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 xkcd_latest. 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.
xkcd_latest 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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