get_activity_messages

ServerIntervals Icu MCP Server
CategoryRead

WHAT IT DOES

What get_activity_messages does on Intervals Icu MCP Server

AI agents call get_activity_messages to retrieve information from Intervals Icu 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 get_activity_messages needs a policy

This tool retrieves or queries existing data (messages/comments associated with an activity) without creating, modifying, deleting, or executing operations. It is a pure read operation with no side effects on the Intervals.icu system. Severity is low as the blast radius of misuse is limited to unauthorized data disclosure of fitness activity comments.

From the tool's definition Tool name 'get_activity_messages' uses 'get' verb; description states it 'retrieves' messages/notes for a specific activity with no mention of modification, deletion, or side effects.

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

POLICY

How to control get_activity_messages

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

policy.json

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

get_activity_messages 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 Intervals Icu 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 Intervals Icu MCP Server tools

Destructive delete_custom_item Delete a custom item for an athlete from Intervals.icu Args: item_id: The cus Destructive delete_event Delete event for an athlete from Intervals.icu Args: athlete_id: The Intervals Destructive delete_events_by_date_range Delete events for an athlete from Intervals.icu in the specified date range. Args: Execute register_tools Register all MCP tools with the FastMCP server instance. This function imports all to Write add_activity_message Add a message (note/comment) to an activity on Intervals.icu Args: activity_i Write add_or_update_event add_or_update_event Write add_or_update_note Add or update a plain text note (category NOTE) on the Intervals.icu calendar. Args: Write create_custom_item create_custom_item

All 21 Intervals Icu MCP Server tools →

Read tools on other servers

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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 get_activity_messages

What does the get_activity_messages tool do? +

Get messages (notes/comments) for a specific activity from Intervals.icu Args: activity_id: The Intervals.icu activity ID api_key: The Intervals.icu API key (optional, will use API_KEY from .env if not provided). It is categorised as a Read tool in the Intervals Icu MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_activity_messages? +

Register the Intervals Icu MCP Server MCP server in PolicyLayer and add a rule for get_activity_messages: 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 Intervals Icu MCP Server. Nothing to install.

What risk level is get_activity_messages? +

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

Can I rate-limit get_activity_messages? +

Yes. Add a rate_limit block to the get_activity_messages 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_activity_messages completely? +

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

get_activity_messages is provided by the Intervals Icu MCP Server MCP server (mvilanova/intervals-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 Intervals Icu MCP Server tool call.

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

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21 Intervals Icu MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.