AI agents call adr_search 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 information retrieval only. It queries existing ADR data and returns matching results. There is no creation, modification, deletion, execution of code, or financial impact. The blast radius of misuse is minimal - an attacker could only gain information about architectural decisions already stored in the system.
From the tool's definition Full-text search across all ADRs - retrieves and queries data without modification. The verb 'search' indicates a read-only operation that returns results without side effects.
Attacks that exploit this kind of access
Full-text search across all ADRs. 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_search: 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_search 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_search 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_search. 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_search 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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