Get a summary of app usage for a specific day, including top apps, active/AFK hours, and first/last active times
AI agents call get_day_summary to retrieve information from ActivityWatch MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool is a read-only operation that queries historical activity data from ActivityWatch. It returns aggregated statistics about past computer usage without modifying any data, executing code, or causing side effects. The scope is limited to retrieving time-tracking insights, and misuse by an AI agent would only result in inappropriate information exposure, not system compromise or data loss.
From the tool's definition Tool retrieves a summary of app usage data (top apps, active/AFK hours, first/last active times) for a specific day. The verb 'get' and the singular 'summary' indicate data retrieval with no modification, deletion, or execution of operations.
Attacks that exploit this kind of access
Get a summary of app usage for a specific day, including top apps, active/AFK hours, and first/last active times. It is categorised as a Read tool in the ActivityWatch MCP Server MCP Server, which means it retrieves data without modifying state.
Register the ActivityWatch MCP Server MCP server in PolicyLayer and add a rule for get_day_summary: 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 ActivityWatch MCP Server. Nothing to install.
get_day_summary 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_day_summary 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_day_summary. 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_day_summary is provided by the ActivityWatch MCP Server MCP server (jm-404/activitywatch-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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