generate_trend_chart · Q1 Crafter MCP: Risk & Policy

WHAT IT DOES

What generate_trend_chart does on Q1 Crafter MCP

AI agents use generate_trend_chart to create or update resources in Q1 Crafter MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Q1 Crafter MCP environment.

WHY IT NEEDS A POLICY

Why generate_trend_chart needs a policy

The tool creates new chart data structures or visualization files based on academic publication trends. This is a write operation (creates new artifacts) rather than read (which would only retrieve existing data). It is not Execute because it doesn't run arbitrary code or trigger external side effects beyond chart generation. Not Destructive, Financial, or Other.

From the tool's definition Tool generates and produces trend chart outputs (chart generation), which involves creating new data artifacts. Description indicates it generates visualizations (yearly publication counts), suggesting file/data creation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

generate_trend_chart Rate-limited

generate_trend_chart 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "generate_trend_chart": {
      "limits": [
        {
          "counter": "generate_trend_chart_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Q1 Crafter MCP, so you can run agents against it safely.

FAQ

Questions about generate_trend_chart

What does the generate_trend_chart tool do? +

Generate publication trend charts — yearly counts,. It is categorised as a Write tool in the Q1 Crafter MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on generate_trend_chart? +

Register the Q1 Crafter MCP server in PolicyLayer and add a rule for generate_trend_chart: 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 Q1 Crafter MCP. Nothing to install.

What risk level is generate_trend_chart? +

generate_trend_chart is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit generate_trend_chart? +

Yes. Add a rate_limit block to the generate_trend_chart 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.

How do I block generate_trend_chart completely? +

Set action: deny in the PolicyLayer policy for generate_trend_chart. 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.

What MCP server provides generate_trend_chart? +

generate_trend_chart is provided by the Q1 Crafter MCP server (muslus/q1-crafter-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.