US healthcare provider lookup (NPPES NPI Registry). Lookup by 10-digit NPI (precise) or firstName + lastName + state. Returns name, credentials, specialty taxonomies with state license numbers, addresses, phone, identifiers.
AI agents call license.medical to retrieve information from Mcp without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries a public healthcare provider registry and returns read-only information. It performs no writes, executions, or financial transactions. The severity is low because it accesses publicly available NPI registry data, though it does aggregate PII-adjacent professional information.
From the tool's definition 'lookup' and 'Returns name, credentials, specialty taxonomies with state license numbers, addresses, phone, identifiers' — purely retrieves data from the NPPES NPI Registry with no side effects
Attacks that exploit this kind of access
US healthcare provider lookup (NPPES NPI Registry). Lookup by 10-digit NPI (precise) or firstName + lastName + state. Returns name, credentials, specialty taxonomies with state license numbers, addresses, phone, identifiers. It is categorised as a Read tool in the Mcp MCP Server, which means it retrieves data without modifying state.
Register the MCP server in PolicyLayer and add a rule for license.medical: 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. Nothing to install.
license.medical 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 license.medical 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 license.medical. 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.
license.medical is provided by the MCP server (@2sio/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.
Teams ship this data inside their own products. See what a licence covers →