cronometer_get_fasting_history
AI agents call cronometer_get_fasting_history to retrieve information from FitnessMCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The 'get_' prefix and 'history' suffix indicate this tool retrieves historical fasting data from Cronometer without modifying anything. While the description is uninformative, the tool name structure and context of similar read-only sibling tools strongly suggest it performs data retrieval only. No side effects or data mutations are indicated.
From the tool's definition Tool name contains 'get_fasting_history' which indicates data retrieval. The description is empty, but the naming pattern (get_*) combined with sibling tools like 'cronometer_get_daily_nutrition' and 'cronometer_get_fasting_stats' establishes this as a…
Attacks that exploit this kind of access
cronometer_get_fasting_history. It is categorised as a Read tool in the FitnessMCP MCP Server, which means it retrieves data without modifying state.
Register the Fitness MCP server in PolicyLayer and add a rule for cronometer_get_fasting_history: 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 FitnessMCP. Nothing to install.
cronometer_get_fasting_history 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 cronometer_get_fasting_history 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 cronometer_get_fasting_history. 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.
cronometer_get_fasting_history is provided by the Fitness MCP server (senoj100-alt/fitnessmcp). 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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