Remove a previously logged weight entry by its logId (from log_weight output or from get_body_log.weight[].logId). Use this to undo a mis-typed or test reading.
AI agents call delete_weight_log to permanently remove resources in Fitbit Googlehealth — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool irreversibly deletes personal health data (weight log entries) that cannot be recovered once removed. While the blast radius is limited (single weight entry deletion rather than bulk data destruction) and does not involve financial transactions, the irreversible nature of deletion places it in the Destructive category.
From the tool's definition Tool name is 'delete_weight_log' and description states 'Remove a previously logged weight entry' and 'undo a mis-typed or test reading'. The description explicitly indicates irreversible deletion of health data records.
Attacks that exploit this kind of access
Remove a previously logged weight entry by its logId (from log_weight output or from get_body_log.weight[].logId). Use this to undo a mis-typed or test reading. It is categorised as a Destructive tool in the Fitbit Googlehealth MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Fitbit Googlehealth MCP server in PolicyLayer and add a rule for delete_weight_log: 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 Fitbit Googlehealth. Nothing to install.
delete_weight_log is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the delete_weight_log 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 delete_weight_log. 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.
delete_weight_log is provided by the Fitbit Googlehealth MCP server (tachibanayu24/fitbit-googlehealth-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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