AI agents use plot_function_curve to create or update resources in Math MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Math MCP Server environment.
Based on the tool name and server context (plotting utilities), this tool likely renders/creates a plot or chart of a function curve, which constitutes a Write operation (creating a new artifact/file). Confidence is low due to the empty description. The sibling tool 'create_and_save_chart' suggests plotting tools on this server produce saved files, supporting a Write classification.
From the tool's definition Tool name: plot_function_curve; description is empty and uninformative.
Documented attack patterns abuse exactly the kind of access plot_function_curve gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Math MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for plot_function_curve:
{
"version": "1",
"default": "deny",
"tools": {
"plot_function_curve": {
"limits": [
{
"counter": "plot_function_curve_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}plot_function_curve stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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plot_function_curve. It is categorised as a Write tool in the Math MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Math MCP Server MCP server in PolicyLayer and add a rule for plot_function_curve: 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 Math MCP Server. Nothing to install.
plot_function_curve is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the plot_function_curve 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 plot_function_curve. 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.
plot_function_curve is provided by the Math MCP Server MCP server (111-test-111/math-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Math 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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22 Math MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.