compare_isos

SERVERMcp Server SOURCEhttps://dchub.cloud/mcp

Low RISK CLASS

Category Read

Parameters 10 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/cloud-dchub-mcp-server/compare-isos.md

WHAT IT DOES

What compare_isos does on Mcp Server

AI agents call compare_isos to retrieve information from Mcp Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Parameter	Type	Required	Description
`isos`	string	—	Comma-separated list of 2-4 US ISO/RTO grid regions to compare, e.g. "PJM,ERCOT,CAISO" (valid: ERCOT, PJM, MISO, CAISO, SPP, NYISO, ISONE)

Parameters from the server's own tool schema.

RISK

Why compare_isos is rated Low

compare_isos retrieves and aggregates public grid intelligence data from US ISO operators. It has no side effects—it does not create, modify, delete, execute code, trigger external operations, or commit financial transactions. The tool consolidates multiple sequential read operations into a single optimized query, making it purely informational.

From the tool's definition Tool performs side-by-side comparison of ISO grid data (fuel mix, demand, renewable/gas share, interconnection-queue depth, time-to-power) by querying existing intelligence; returns structured comparison data with no modifications, deletions, or external…

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs compare_isos safely

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

compare_isos Allowed

compare_isos 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": {
    "compare_isos": {}
  }
}

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

The button opens the PolicyLayer dashboard: create your workspace, connect Mcp Server, apply this rule, and every compare_isos call is checked against it from then on.

FAQ

Questions about compare_isos

What does the compare_isos tool do? +

Use when a user wants a side-by-side of 2-4 ISO grids — fuel mix, demand, renewable/gas share, interconnection-queue depth, time-to-power — in one call instead of N sequential get_grid_intelligence calls. Example: "Compare PJM vs ERCOT vs CAISO on gas share, renewable share, and queue depth right now." — compare_isos isos="PJM,ERCOT,CAISO". Params: isos is a comma-separated list (2-4 max) drawn from the 7 live US ISOs: "PJM" | "ERCOT" | "CAISO" | "MISO" | "SPP" | "NYISO" | "ISO-NE". Returns: {isos[], comparison:{<iso>:{demand_mw, generation_mix_pct, renewable_share_pct, gas_share_pct, constraint_score, excess_power_score, avg_time_to_power_months, queue_depth_gw, retail_price_cents_kwh}}, as_of}. Do NOT use to rank ALL grids globally (use get_grid_scoreboard) or for the single-ISO deep brief (use get_grid_intelligence). It is categorised as a Read tool in the Mcp Server MCP Server, which means it retrieves data without modifying state.

What parameters does compare_isos accept? +

compare_isos accepts 1 parameter: isos. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on compare_isos? +

Register the Mcp Server MCP server in PolicyLayer and add a rule for compare_isos: 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 Mcp Server. Nothing to install.

What risk level is compare_isos? +

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

Can I rate-limit compare_isos? +

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

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

compare_isos is provided by the Mcp Server MCP server (https://dchub.cloud/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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