Retrieve the current value of an object's parameter.
AI agents call get_param to retrieve information from Pure Data MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves parameter values from Pure Data objects with no side effects. It does not create, modify, delete, execute commands, or commit financial transactions. The operation is purely informational and safe for an AI agent to invoke.
From the tool's definition Tool name 'get_param' and description 'Retrieve the current value of an object's parameter' indicate a query operation that reads data without modification.
Documented attack patterns abuse exactly the kind of access get_param gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Pure Data MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_param:
{
"version": "1",
"default": "deny",
"tools": {
"get_param": {}
}
}get_param is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Retrieve the current value of an object's parameter. It is categorised as a Read tool in the Pure Data MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Pure Data MCP Server MCP server in PolicyLayer and add a rule for get_param: 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 Pure Data MCP Server. Nothing to install.
get_param 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 get_param 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 get_param. 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.
get_param is provided by the Pure Data MCP Server MCP server (nikmaniatis/pd-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Pure Data MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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11 Pure Data MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.