Get customers list from account numbers
AI agents call customer_get_by_account_numbers to retrieve information from MCP Dynamics 365 Commerce Server 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 customer data based on account numbers. It performs a simple lookup/fetch operation without creating, modifying, deleting, or executing any actions. Severity is low because reading customer data carries minimal risk compared to modification or deletion, though confidence is not perfect (0.95 rather than 1.0) pending confirmation that no side effects occur during retrieval.
From the tool's definition Tool name includes 'get' and description states 'Get customers list from account numbers' — a retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
Get customers list from account numbers. It is categorised as a Read tool in the MCP Dynamics 365 Commerce Server MCP Server, which means it retrieves data without modifying state.
Register the MCP Dynamics 365 Commerce Server MCP server in PolicyLayer and add a rule for customer_get_by_account_numbers: 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 Dynamics 365 Commerce Server. Nothing to install.
customer_get_by_account_numbers 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 customer_get_by_account_numbers 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 customer_get_by_account_numbers. 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.
customer_get_by_account_numbers is provided by the MCP Dynamics 365 Commerce Server MCP server (jiantmo/mcp-commerce). 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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