Check if a business qualifies as
AI agents call check_size_standard to retrieve information from SBA MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and validates business eligibility against SBA size standards—a pure read operation that queries reference data to answer a question. It has no side effects, does not create, modify, or delete data, and does not execute code or trigger external operations.
From the tool's definition Tool name 'check_size_standard' and description 'Check if a business qualifies as' (incomplete) indicate a lookup/verification operation.
Attacks that exploit this kind of access
Check if a business qualifies as. It is categorised as a Read tool in the SBA MCP Server MCP Server, which means it retrieves data without modifying state.
Register the SBA MCP Server MCP server in PolicyLayer and add a rule for check_size_standard: 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 SBA MCP Server. Nothing to install.
check_size_standard 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 check_size_standard 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 check_size_standard. 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.
check_size_standard is provided by the SBA MCP Server MCP server (shawndrake2/mcp-sba). 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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