AI agents call list_trackers to retrieve information from Jhabit without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves existing tracker data without creating, modifying, deleting, or executing any operations. It has minimal blast radius as it only exposes personal habit/quit tracker metadata that the authenticated user already owns. The operation is read-only and reversible.
From the tool's definition Tool description explicitly states 'List all habits and/or quits' — a retrieval operation with no modification or side effects. The function name 'list_trackers' also indicates a simple listing/query operation.
Attacks that exploit this kind of access
List all habits and/or quits for the authenticated user. It is categorised as a Read tool in the Jhabit MCP Server, which means it retrieves data without modifying state.
Register the Jhabit MCP server in PolicyLayer and add a rule for list_trackers: 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 Jhabit. Nothing to install.
list_trackers 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 list_trackers 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 list_trackers. 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.
list_trackers is provided by the Jhabit MCP server (jacob-stokes/jhabit-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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