Explain why a file exists, which module it belongs to, and whether it changed recently.
AI agents call explain_file_role to retrieve information from Project Context Map without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and summarizes metadata about files (their purpose, module membership, and recent change status) without creating, modifying, deleting, or executing anything. It is a pure read operation that helps an AI agent understand project structure with zero side effects.
From the tool's definition The tool description states it 'explain[s]' and asks 'which module it belongs to' and 'whether it changed recently' — all query operations with no modification capability.
Attacks that exploit this kind of access
Explain why a file exists, which module it belongs to, and whether it changed recently. It is categorised as a Read tool in the Project Context Map MCP Server, which means it retrieves data without modifying state.
Register the Project Context Map MCP server in PolicyLayer and add a rule for explain_file_role: 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 Project Context Map. Nothing to install.
explain_file_role 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 explain_file_role 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 explain_file_role. 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.
explain_file_role is provided by the Project Context Map MCP server (tamojit-123/project-context-map-mcp). 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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