AI agents call relay_read 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.
This tool queries and retrieves relay messages without modifying, deleting, or executing any operations. It is a straightforward data retrieval function with no destructive or financial impact. Low severity due to minimal blast radius if misused—worst case would be unauthorized information access limited to relay messages within the AD4M system.
From the tool's definition Tool name contains 'read' and description states 'Read cross-terminal relay messages from AD4M.' The operation retrieves existing relay messages with optional filtering, producing no side effects.
Attacks that exploit this kind of access
Read cross-terminal relay messages from AD4M. Optionally filter by session_id or since a timestamp. 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 relay_read: 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.
relay_read 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 relay_read 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 relay_read. 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.
relay_read 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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