Get the field structure and field types of the worksheet. The response includes field type information where each field has a
AI agents call get_worksheet_fields to retrieve information from HAP MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a data retrieval operation (get/fetch) on worksheet metadata without creating, modifying, deleting, or executing side effects. It simply queries and returns field definitions, which is a read-only operation.
From the tool's definition Tool name 'get_worksheet_fields' and description indicate it retrieves field structure and type information from a worksheet with no modification capability.
Attacks that exploit this kind of access
Get the field structure and field types of the worksheet. The response includes field type information where each field has a. It is categorised as a Read tool in the HAP MCP Server MCP Server, which means it retrieves data without modifying state.
Register the HAP MCP Server MCP server in PolicyLayer and add a rule for get_worksheet_fields: 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 HAP MCP Server. Nothing to install.
get_worksheet_fields 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 get_worksheet_fields 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 get_worksheet_fields. 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.
get_worksheet_fields is provided by the HAP MCP Server MCP server (mingdaocloud/hap-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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