set-period · Tally Prime MCP Server MCP: Risk & Policy

WHAT IT DOES

What set-period does on Tally Prime MCP Server

AI agents use set-period to create or update resources in Tally Prime MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Tally Prime MCP Server environment.

WHY IT NEEDS A POLICY

Why set-period needs a policy

This tool modifies configuration state in Tally Prime—specifically the global reporting period context—which is a reversible but significant change. It does not execute arbitrary code (Execute), delete data (Destructive), nor move money (Financial). However, it alters system state that affects subsequent operations, making it a Write action.

From the tool's definition The tool 'sets the active reporting period in Tally Prime by specifying a from date and to date' and 'changes the global period context used by Tally for subsequent report queries'.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set-period Rate-limited

set-period stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "set-period": {
      "limits": [
        {
          "counter": "set-period_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Tally Prime MCP Server, so you can run agents against it safely.

FAQ

Questions about set-period

What does the set-period tool do? +

sets the active reporting period in Tally Prime by specifying a from date and to date. This changes the global period context used by Tally for subsequent report queries. It is categorised as a Write tool in the Tally Prime MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set-period? +

Register the Tally Prime MCP Server MCP server in PolicyLayer and add a rule for set-period: 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.

What risk level is set-period? +

set-period is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit set-period? +

Yes. Add a rate_limit block to the set-period 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.

How do I block set-period completely? +

Set action: deny in the PolicyLayer policy for set-period. 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.

What MCP server provides set-period? +

set-period 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.