List all corporations accessible to the authenticated user
AI agents call list_corps to retrieve information from Fastly NGWAF MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a read-only operation that queries and returns data about corporations. However, the severity is elevated to 'medium' rather than 'low' because the Fastly NGWAF context suggests this lists security infrastructure entities, and enumerating corporations could expose organizational security topology or multi-tenant customer information to an unauthorized AI agent, creating reconnaissance value for an attacker.
From the tool's definition Tool name is 'list_corps' and description states it 'List all corporations accessible to the authenticated user' — a retrieval operation with no side effects.
Attacks that exploit this kind of access
List all corporations accessible to the authenticated user. It is categorised as a Read tool in the Fastly NGWAF MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Fastly NGWAF MCP Server MCP server in PolicyLayer and add a rule for list_corps: 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 Fastly NGWAF MCP Server. Nothing to install.
list_corps 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 list_corps 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 list_corps. 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.
list_corps is provided by the Fastly NGWAF MCP Server MCP server (purpleax/fastlymcp). 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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