AI agents call calculate_nps_projection to retrieve information from Mcp India Stack without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a financial calculation/projection based on inputs, similar to its sibling calculation tools. It does not create, modify, delete, or execute external operations. It does not move money or create financial obligations. The 'calculate' prefix combined with 'projection' (forecasting future values) indicates a read-like operation that computes and returns information.
From the tool's definition Tool name 'calculate_nps_projection' indicates a calculation/projection operation. NPS (National Pension System) projection is a financial forecasting computation that retrieves or derives data without modifying any underlying financial accounts, records, or…
Documented attack patterns abuse exactly the kind of access calculate_nps_projection gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp India Stack, and nothing reaches the server without passing your rules. This is the rule we recommend for calculate_nps_projection:
{
"version": "1",
"default": "deny",
"tools": {
"calculate_nps_projection": {}
}
}calculate_nps_projection is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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calculate_nps_projection. It is categorised as a Read tool in the Mcp India Stack MCP Server, which means it retrieves data without modifying state.
Register the Mcp India Stack MCP server in PolicyLayer and add a rule for calculate_nps_projection: 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 Mcp India Stack. Nothing to install.
calculate_nps_projection 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 calculate_nps_projection 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 calculate_nps_projection. 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.
calculate_nps_projection is provided by the Mcp India Stack MCP server (rehan1020/mcp-india-stack). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Mcp India Stack, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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58 Mcp India Stack tools catalogued and risk-classified — across an index of 43,000+ MCP servers.