AI agents call adr_read to retrieve information from Mcp Adr without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a query operation that retrieves and returns structured ADR content without creating, modifying, deleting, or executing external operations. It is a straightforward data retrieval function with no destructive, financial, or execution capabilities.
From the tool's definition Tool name 'adr_read' and description 'Read an ADR by number or title substring. Returns structured content' explicitly indicates retrieval of data with no modification or side effects.
Attacks that exploit this kind of access
Read an ADR by number or title substring. Returns structured content. It is categorised as a Read tool in the Mcp Adr MCP Server, which means it retrieves data without modifying state.
Register the Mcp Adr MCP server in PolicyLayer and add a rule for adr_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 Adr. Nothing to install.
adr_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 adr_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 adr_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.
adr_read is provided by the Mcp Adr MCP server (mauriziomocci/mcp-adr). 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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