list_dashboards

Retrieve all dashboards from Mackerel. 🔍 USE THIS TOOL WHEN USERS: - Get a list of dashboards - Get ID and title of each dashboard <examples> Get all dashboards \

ServerMackerel MCP Server
CategoryRead

How to control list_dashboards ↓

WHAT IT DOES

What list_dashboards does on Mackerel MCP Server

AI agents call list_dashboards to retrieve information from Mackerel MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

THE RISK

Low Risk

Why list_dashboards needs a policy

This tool retrieves or lists dashboard information from Mackerel's monitoring platform. It performs no side effects, creates no resources, executes no code, deletes nothing, and involves no financial transactions. It is a straightforward data retrieval operation matching the Read category definition.

From the tool's definition Tool name 'list_dashboards' and description 'Retrieve all dashboards from Mackerel' indicate a read-only operation that queries and returns dashboard data without modifying anything.

Documented attack patterns abuse exactly the kind of access list_dashboards gives an agent:

POLICY

How to control list_dashboards

PolicyLayer is an MCP gateway — it sits between your AI agents and Mackerel MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list_dashboards:

policy.json

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

list_dashboards is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Mackerel MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Mackerel MCP Server tools

Write update_dashboard Update a specific dashboard by ID in Mackerel. 🔍 USE THIS TOOL WHEN USERS: - Modify dash Read get_alert Retrieve a specific alert by ID from Mackerel. 🔍 USE THIS TOOL WHEN USERS: - Investigate Read get_alert_logs Retrieve logs for a specific alert by ID from Mackerel. 🔍 USE THIS TOOL WHEN USERS: - Vi Read get_dashboard Retrieve a specific dashboard by ID from Mackerel. 🔍 USE THIS TOOL WHEN USERS: - Get det Read get_host_metrics Retrieve metrics data for a specific host from Mackerel. 🔍 USE THIS TOOL WHEN USERS: - G Read get_monitor Retrieve a specific monitor configuration by ID from Mackerel. 🔍 USE THIS TOOL WHEN USER Read get_service_metrics Retrieve metrics data for a specific service from Mackerel. 🔍 USE THIS TOOL WHEN USERS: Read get_trace Retrieve trace data by trace ID from Mackerel for distributed tracing analysis. 🔍 USE TH

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about list_dashboards

What does the list_dashboards tool do? +

Retrieve all dashboards from Mackerel. 🔍 USE THIS TOOL WHEN USERS: - Get a list of dashboards - Get ID and title of each dashboard <examples> Get all dashboards \. It is categorised as a Read tool in the Mackerel MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_dashboards? +

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

What risk level is list_dashboards? +

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

Can I rate-limit list_dashboards? +

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

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

list_dashboards is provided by the Mackerel MCP Server MCP server (mackerelio-labs/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mackerel MCP Server tool call.

Start from Mackerel MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →

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16 Mackerel MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.