AI agents call dump_current_activity to retrieve information from Espresso without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves and reports the name of the currently active Android activity. It performs a read-only query with no side effects, no data modification, and no destructive actions. The blast radius of misuse is minimal as it only exposes the current app/activity name.
From the tool's definition Dump the current activity name of the connected Android device
Attacks that exploit this kind of access
Dump the current activity name of the connected Android device. It is categorised as a Read tool in the Espresso MCP Server, which means it retrieves data without modifying state.
Register the Espresso MCP server in PolicyLayer and add a rule for dump_current_activity: 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 Espresso. Nothing to install.
dump_current_activity 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 dump_current_activity 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 dump_current_activity. 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.
dump_current_activity is provided by the Espresso MCP server (vs4vijay/espresso-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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