Gets all summary fields for a sheet (the sheet summary section)
AI agents call get_summary_fields to retrieve information from Smartsheet 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 summary field metadata from a sheet without creating, modifying, deleting, or executing any operations. It has no side effects and poses minimal risk if misused—at worst, an agent could access sheet summary information it shouldn't, which is an information disclosure concern but low severity without sensitive data context.
From the tool's definition Tool name 'get_summary_fields' and description 'Gets all summary fields for a sheet' indicate a retrieval-only operation with the verb 'Gets' denoting data query without modification.
Attacks that exploit this kind of access
Gets all summary fields for a sheet (the sheet summary section). It is categorised as a Read tool in the Smartsheet MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Smartsheet MCP Server MCP server in PolicyLayer and add a rule for get_summary_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 Smartsheet MCP Server. Nothing to install.
get_summary_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_summary_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_summary_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_summary_fields is provided by the Smartsheet MCP Server MCP server (thomaswtwrt/smar-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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