Recommend a controlled chart type for the provided data and goal.
AI agents call recommend_chart_type to retrieve information from ECharts ChartPage MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool analyzes input data and a goal to suggest a chart type. It has no side effects: it does not write files, execute code, modify state, or involve financial operations. It is a read/query-style operation that produces a recommendation as output.
From the tool's definition "Recommend a controlled chart type for the provided data and goal" — purely advisory, returns a recommendation without creating, modifying, or executing anything.
Attacks that exploit this kind of access
Recommend a controlled chart type for the provided data and goal. It is categorised as a Read tool in the ECharts ChartPage MCP Server MCP Server, which means it retrieves data without modifying state.
Register the ECharts ChartPage MCP Server MCP server in PolicyLayer and add a rule for recommend_chart_type: 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 ECharts ChartPage MCP Server. Nothing to install.
recommend_chart_type 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 recommend_chart_type 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 recommend_chart_type. 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.
recommend_chart_type is provided by the ECharts ChartPage MCP Server MCP server (riverthrimp/echarts-chartpage). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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