AI agents use order_number to commit financial operations through Seven — usually the final step of a payment, billing, or trading workflow. A call moves real money.
Ordering/purchasing a phone number initiates a financial obligation, committing funds from the account to acquire a resource. This falls squarely in the Financial category as it moves money or commits financial obligations. The blast radius is high because an AI agent could repeatedly purchase numbers, incurring significant costs.
From the tool's definition "Purchase a phone number" — purchasing implies a financial transaction and monetary commitment
Attacks that exploit this kind of access
Purchase a phone number. It is categorised as a Financial tool in the Seven MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Register the Seven MCP server in PolicyLayer and add a rule for order_number: 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 Seven. Nothing to install.
order_number is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the order_number 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 order_number. 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.
order_number is provided by the Seven MCP server (seven-io/seven-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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