AI agents call show-item to retrieve information from SupaThings MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool name and server context strongly suggest this retrieves or displays information about a task/item without modifying state. However, confidence is reduced to 0.70 because the tool description is empty, which prevents confirmation of side effects. A 'show' operation in a task management context typically has no side effects, hence 'Read' and 'low' severity.
From the tool's definition Tool name 'show-item' suggests retrieval/display of an item. Server description indicates it 'read and manage Things 3 data' with tools for 'project structural analysis' and 'understand...tasks'.
Documented attack patterns abuse exactly the kind of access show-item gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and SupaThings MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for show-item:
{
"version": "1",
"default": "deny",
"tools": {
"show-item": {}
}
}show-item is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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show-item. It is categorised as a Read tool in the SupaThings MCP MCP Server, which means it retrieves data without modifying state.
Register the SupaThings MCP server in PolicyLayer and add a rule for show-item: 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 SupaThings MCP. Nothing to install.
show-item 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-item 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-item. 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-item is provided by the SupaThings MCP server (soycanopa/supathings-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from SupaThings MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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37 SupaThings MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.