Delete a planned training session. Completed and Strava-imported sessions cannot be deleted.
AI agents call delete_session to permanently remove resources in Pelaris — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool permanently removes training session records from the user's fitness coaching system. While the description notes that completed and Strava-imported sessions cannot be deleted (suggesting some guardrails), the core function is to irreversibly delete data. This is irreversible and cannot be undone, making it Destructive rather than Write.
From the tool's definition Tool name is 'delete_session' with description stating 'Delete a planned training session.' The verb 'delete' combined with irreversible removal of training session data matches the Destructive category definition.
Attacks that exploit this kind of access
Delete a planned training session. Completed and Strava-imported sessions cannot be deleted. It is categorised as a Destructive tool in the Pelaris MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Pelaris MCP server in PolicyLayer and add a rule for delete_session: 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 Pelaris. Nothing to install.
delete_session 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_session 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_session. 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_session is provided by the Pelaris MCP server (thedonk/pelaris-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
delete_session is one line of Pelaris's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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