// SCAN REPORT

Mackerel MCP Server

16 tools. 1 can modify or destroy data without limits.

1 write tool that can modify data. Rate limits recommended.

Last updated:

1 can modify or destroy data
15 read-only
16 tools total

Community server · catalogue entry verified 12/06/2026

How to control Mackerel MCP Server ↓

TOOL MAP

What Mackerel MCP Server exposes to your agents

Read (15) Write / Execute (1) Destructive / Financial (0)

Running more than one server? Check your whole stack →

MOST DANGEROUS TOOLS
High Risk

The most dangerous Mackerel MCP Server tools

Write · Medium update_dashboard This tool modifies dashboard metadata and configuration in a monitoring platform.

1 of Mackerel MCP Server's 16 tools can modify, destroy, or commit something on every call — and an agent calls them with no built-in limits.

POLICY

How to control Mackerel MCP Server

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

Rate limit write operations
{
  "update_dashboard": {
    "limits": [
      {
        "counter": "update_dashboard_per_hour",
        "window": "hour",
        "max": 30,
        "scope": "grant"
      }
    ]
  }
}

Prevents bulk unintended modifications from agents caught in loops.

Cap read operations
{
  "get_alert": {
    "limits": [
      {
        "counter": "get_alert_per_minute",
        "window": "minute",
        "max": 60,
        "scope": "grant"
      }
    ]
  }
}

Controls API costs and prevents retry loops from exhausting upstream rate limits.

  1. Create a free account and register Mackerel MCP Server — nothing to install.
  2. Add these rules — paste them, or build them visually. Tune the limits to your setup.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
ENFORCE POLICY ON MACKEREL →

Free to start. No card required.

FULL CATALOGUE

All 16 Mackerel MCP Server tools

WRITE 1 tools
Write update_dashboard Update a specific dashboard by ID in Mackerel. 🔍 USE THIS TOOL WHEN USERS: - Modify dashboard title, memo, o
READ 15 tools
Read get_alert Retrieve a specific alert by ID from Mackerel. 🔍 USE THIS TOOL WHEN USERS: - Investigate a particular alert Read get_alert_logs Retrieve logs for a specific alert by ID from Mackerel. 🔍 USE THIS TOOL WHEN USERS: - View status change his Read get_dashboard Retrieve a specific dashboard by ID from Mackerel. 🔍 USE THIS TOOL WHEN USERS: - Get details of a specific d Read get_host_metrics Retrieve metrics data for a specific host from Mackerel. 🔍 USE THIS TOOL WHEN USERS: - Get metrics data for Read get_monitor Retrieve a specific monitor configuration by ID from Mackerel. 🔍 USE THIS TOOL WHEN USERS: - Get details of 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 THIS TOOL WHEN USERS: Read list_alerts Retrieve alerts from Mackerel. 🔍 USE THIS TOOL WHEN USERS: - Check currently active alerts - Get a list of a Read list_dashboards Retrieve all dashboards from Mackerel. 🔍 USE THIS TOOL WHEN USERS: - Get a list of dashboards - Get ID and t Read list_db_query_stats Retrieve database query statistics from Mackerel. 🔍 USE THIS TOOL WHEN USERS: - Analyze slow database querie Read list_hosts Retrieve hosts from Mackerel. 🔍 USE THIS TOOL WHEN USERS: - Get a list of hosts - Filter hosts by various cr Read list_http_server_stats Retrieve HTTP server statistics from Mackerel. 🔍 USE THIS TOOL WHEN USERS: - Analyze slow HTTP endpoints - I Read list_monitors Retrieve all monitor configurations from Mackerel. 🔍 USE THIS TOOL WHEN USERS: - Get a list of all monitors Read list_services Retrieve all services from Mackerel. 🔍 USE THIS TOOL WHEN USERS: - Get a list of services - View service nam Read list_traces Search and retrieve traces from Mackerel for distributed tracing analysis. 🔍 USE THIS TOOL WHEN USERS: - Sea
FAQ

Questions about Mackerel MCP Server

How do I prevent bulk modifications through Mackerel MCP Server? +

The Mackerel MCP Server server has 1 write tools including update_dashboard. Set a rate limit in your policy -- for example, 10 calls per hour prevents an agent from making more than 10 modifications per hour. PolicyLayer enforces this at the gateway, before calls reach Mackerel MCP Server.

How many tools does the Mackerel MCP Server MCP server expose? +

16 tools across 2 categories: Read, Write. 15 are read-only. 1 can modify, create, or delete data.

How do I enforce a policy on Mackerel MCP Server? +

Register the Mackerel MCP Server MCP server in PolicyLayer, apply the suggested rules above (adjust the limits to your use case), and point your AI client at the PolicyLayer proxy URL instead of the server directly. Your agents keep the same tools; PolicyLayer evaluates every call against policy before it executes. Nothing to install, live in minutes.

Enforce policy on every Mackerel MCP Server tool call.

Deterministic rules across all 16 Mackerel MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

ENFORCE POLICY ON MACKEREL →

Free to start. No card required.

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

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