Get stream data for a specific activity from Intervals.icu This endpoint returns time-series data for an activity, including metrics like power, heart rate, cadence, altitude, distance, temperature, and velocity data. Args: activity_id: The Intervals.icu activity ID api_key: The Intervals.icu API...
AI agents call get_activity_streams 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.
get_activity_streams is a pure data retrieval operation that queries and returns fitness metrics from an activity. It has no side effects—it does not create, modify, delete, or trigger external actions. The tool simply fetches time-series telemetry data. This is a standard Read operation with low blast radius if misused.
From the tool's definition Tool description states it 'returns time-series data for an activity' with metrics like power, heart rate, cadence, etc. The endpoint retrieves existing stream data without modification, creation, or deletion.
Documented attack patterns abuse exactly the kind of access get_activity_streams gives an agent:
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_streams:
{
"version": "1",
"default": "deny",
"tools": {
"get_activity_streams": {}
}
}get_activity_streams is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get stream data for a specific activity from Intervals.icu This endpoint returns time-series data for an activity, including metrics like power, heart rate, cadence, altitude, distance, temperature, and velocity data. 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) stream_types: Comma-separated list of stream types to retrieve (optional, defaults to all available types) Available types: time, watts, heartrate, cadence, altitude, distance, core_temperature, skin_temperature, velocity_smooth. It is categorised as a Read tool in the Intervals Icu MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Intervals Icu MCP Server MCP server in PolicyLayer and add a rule for get_activity_streams: 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.
get_activity_streams is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_activity_streams 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.
Set action: deny in the PolicyLayer policy for get_activity_streams. 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.
get_activity_streams 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.
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.