oboe_trim_sessions
AI agents call oboe_trim_sessions to permanently remove resources in Obo — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The word 'trim' implies removing or pruning data, likely sessions, which could be an irreversible deletion. Given sibling tools like 'oboe_cancel_session' and 'oboe_complete_session', trimming sessions likely removes old or excess session records. However, the empty description significantly lowers confidence.
From the tool's definition Tool name 'oboe_trim_sessions' suggests removing/pruning sessions; description is empty and uninformative.
Attacks that exploit this kind of access
oboe_trim_sessions. It is categorised as a Destructive tool in the Obo MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Obo MCP server in PolicyLayer and add a rule for oboe_trim_sessions: 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 Obo. Nothing to install.
oboe_trim_sessions 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 oboe_trim_sessions 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 oboe_trim_sessions. 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.
oboe_trim_sessions is provided by the Obo MCP server (warnes-innovations/oboe-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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