hippo_audit_summary
FORGIA #259 — audit log aggregator. Counts by
This record as markdown: /tools/verimem/hippo-audit-summary.md
What hippo_audit_summary does on Verimem
AI agents call hippo_audit_summary to retrieve information from Verimem without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why hippo_audit_summary is rated Low
This tool retrieves and summarizes audit log information. The verb 'aggregator' and action of 'counts' indicate data retrieval and analysis operations only. There is no evidence of write, delete, execute, or financial operations. Even though the description is incomplete ('Counts by' appears truncated), the core function is clearly read-only access to audit logs for review and analysis purposes.
From the tool's definition Tool name 'hippo_audit_summary' and description indicating it is an 'audit log aggregator' that 'Counts by' — describes querying/retrieving aggregated audit log data without modification or deletion.
Attacks that exploit this kind of access
The rule that runs hippo_audit_summary safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Verimem, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For hippo_audit_summary, this is the rule to start with:
hippo_audit_summary is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Verimem, apply this rule, and every hippo_audit_summary call is checked against it from then on.
Questions about hippo_audit_summary
FORGIA #259 — audit log aggregator. Counts by. It is categorised as a Read tool in the Verimem MCP Server, which means it retrieves data without modifying state.
Register the Verimem MCP server in PolicyLayer and add a rule for hippo_audit_summary: 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 Verimem. Nothing to install.
hippo_audit_summary 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 hippo_audit_summary 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 hippo_audit_summary. 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.
hippo_audit_summary is provided by the Verimem MCP server (aureliocpr-ctrl/verimem). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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