US trade/occupational license verification (currently TX TDLR: electricians, A/C techs, cosmetologists, tow operators, +40 trades). By name (owner/business, partial), licenseNumber, licenseType, county. Returns type, number, names, expiration.
AI agents call license.trades 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 license database to retrieve occupational license information. It has no side effects: it does not create, modify, delete, or execute any operations. The returned data (license type, number, names, expiration) are read-only lookups.
From the tool's definition Tool description states it 'Returns type, number, names, expiration' — a query/lookup operation with no modification or deletion capabilities.
Attacks that exploit this kind of access
US trade/occupational license verification (currently TX TDLR: electricians, A/C techs, cosmetologists, tow operators, +40 trades). By name (owner/business, partial), licenseNumber, licenseType, county. Returns type, number, names, expiration. 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.trades: 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.trades 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.trades 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.trades. 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.trades 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 →