get_render_summary

Returns a summary of re-renders grouped by component name with counts. Use groupBy:

SERVERWhy Did You Render SOURCE0x1f320/why-did-you-render-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/0x1f320-why-did-you-render-mcp/get-render-summary.md

WHAT IT DOES

What get_render_summary does on Why Did You Render

AI agents call get_render_summary to retrieve information from Why Did You Render without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why get_render_summary is rated Low

This tool retrieves and summarizes existing performance metrics about React component re-renders. It queries data to help diagnose performance issues but does not modify, delete, or execute any code. The use case is purely diagnostic and observational, with no capability to change system state or trigger external operations.

From the tool's definition The tool "Returns a summary of re-renders grouped by component name with counts" indicates data retrieval with no modification or side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs get_render_summary safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Why Did You Render, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For get_render_summary, this is the rule to start with:

get_render_summary Allowed

get_render_summary is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_render_summary": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Why Did You Render, apply this rule, and every get_render_summary call is checked against it from then on.

FAQ

Questions about get_render_summary

What does the get_render_summary tool do? +

Returns a summary of re-renders grouped by component name with counts. Use groupBy:. It is categorised as a Read tool in the Why Did You Render MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_render_summary? +

Register the Why Did You Render MCP server in PolicyLayer and add a rule for get_render_summary: 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 Why Did You Render. Nothing to install.

What risk level is get_render_summary? +

get_render_summary is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_render_summary? +

Yes. Add a rate_limit block to the get_render_summary 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 get_render_summary completely? +

Set action: deny in the PolicyLayer policy for get_render_summary. 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 get_render_summary? +

get_render_summary is provided by the Why Did You Render MCP server (0x1f320/why-did-you-render-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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