AI agents call ad4m_stats to retrieve information from Mcp Ad4m without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
ad4m_stats gathers and reports statistics on existing memory structures. This is a pure read operation with no side effects, no data modification, and no irreversible actions. The blast radius of misuse is minimal; an agent querying stats cannot damage data or trigger unintended external effects.
From the tool's definition Tool retrieves 'Memory graph statistics: total links, duplicates, breakdown by predicate, oldest and newest entries' — queries aggregate metadata about the semantic graph without modifying, deleting, or executing operations.
Attacks that exploit this kind of access
Memory graph statistics: total links, duplicates, breakdown by predicate, oldest and newest entries. It is categorised as a Read tool in the Mcp Ad4m MCP Server, which means it retrieves data without modifying state.
Register the Mcp Ad4m MCP server in PolicyLayer and add a rule for ad4m_stats: 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 Mcp Ad4m. Nothing to install.
ad4m_stats 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 ad4m_stats 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 ad4m_stats. 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.
ad4m_stats is provided by the Mcp Ad4m MCP server (thefranceway/mcp-ad4m). 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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