AI agents call show_example to retrieve information from MCP-Guide without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays pre-existing example content to educate users about MCP features. It has no side effects, does not execute arbitrary commands, does not modify data, and does not delete anything. It is a straightforward informational read operation, consistent with the Read category definition of 'retrieves or queries data; no side effects'.
From the tool's definition Tool name 'show_example' and description 'Show a practical example of an MCP feature' indicate retrieval and display of existing educational content without modification, deletion, or execution of arbitrary code.
Documented attack patterns abuse exactly the kind of access show_example gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP-Guide, and nothing reaches the server without passing your rules. This is the rule we recommend for show_example:
{
"version": "1",
"default": "deny",
"tools": {
"show_example": {}
}
}show_example is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Show a practical example of an MCP feature. It is categorised as a Read tool in the MCP-Guide MCP Server, which means it retrieves data without modifying state.
Register the MCP-Guide MCP server in PolicyLayer and add a rule for show_example: 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 MCP-Guide. Nothing to install.
show_example 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 show_example 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 show_example. 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.
show_example is provided by the MCP-Guide MCP server (qpd-v/mcp-guide). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 5 MCP-Guide tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
5 MCP-Guide tools catalogued and risk-classified — across an index of 42,500+ MCP servers.