Decode PAN entity type from 4th character. # PermissionTier: READ_ONLY
AI agents call decode_pan_type 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 purely decodes/parses information from a PAN string by inspecting the 4th character to determine entity type. It performs no side effects, no data modification, and is explicitly marked READ_ONLY. Blast radius is minimal as it only reads/interprets a local piece of data.
From the tool's definition Decode PAN entity type from 4th character. # PermissionTier: READ_ONLY
Documented attack patterns abuse exactly the kind of access decode_pan_type 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 decode_pan_type:
{
"version": "1",
"default": "deny",
"tools": {
"decode_pan_type": {}
}
}decode_pan_type is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Decode PAN entity type from 4th character. # PermissionTier: READ_ONLY. 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 decode_pan_type: 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.
decode_pan_type 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 decode_pan_type 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 decode_pan_type. 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.
decode_pan_type 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.