Generates a 2D plot. Tries Desmos API if available, otherwise falls back to local rendering.
AI agents use plot_math_function to create or update resources in Desmos MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Desmos MCP Server environment.
The tool creates a new graphical output (a 2D plot) either via the Desmos API or local matplotlib rendering. This is a Write operation since it produces a new artifact. It does not execute arbitrary code, delete data, or involve finances. Severity is medium because it writes files or makes API calls, but the blast radius is limited to plot generation.
From the tool's definition 'Generates a 2D plot' and 'falls back to local rendering' — creates a plot artifact (file or rendered output) as a side effect
Documented attack patterns abuse exactly the kind of access plot_math_function gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Desmos MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for plot_math_function:
{
"version": "1",
"default": "deny",
"tools": {
"plot_math_function": {
"limits": [
{
"counter": "plot_math_function_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}plot_math_function 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.
Free to start. No card required.
Generates a 2D plot. Tries Desmos API if available, otherwise falls back to local rendering. It is categorised as a Write tool in the Desmos MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Desmos MCP Server MCP server in PolicyLayer and add a rule for plot_math_function: 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 Desmos MCP Server. Nothing to install.
plot_math_function 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_math_function 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_math_function. 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_math_function is provided by the Desmos MCP Server MCP server (thegrsun/desmos-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Desmos MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
5 Desmos MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.