returns predefined option values or drop-down values for the fields required for master and voucher creation, it returns back object array of pre-defined values
AI agents call query-option-values to retrieve information from Tally Prime 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 static reference data (dropdown/enumeration values) needed for UI population or form validation. It performs no data creation, modification, deletion, or external execution. The classification as Read is appropriate for a tool that queries and returns predefined option sets.
From the tool's definition Tool description states it 'returns predefined option values or drop-down values' and 'returns back object array of pre-defined values'.
Attacks that exploit this kind of access
returns predefined option values or drop-down values for the fields required for master and voucher creation, it returns back object array of pre-defined values. It is categorised as a Read tool in the Tally Prime MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Tally Prime MCP Server MCP server in PolicyLayer and add a rule for query-option-values: 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 Tally Prime MCP Server. Nothing to install.
query-option-values 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 query-option-values 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 query-option-values. 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.
query-option-values is provided by the Tally Prime MCP Server MCP server (qalalabs/tally-mcp-server). 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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