AI agents call decode_state_code 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.
The tool name 'decode' suggests it translates or retrieves data (state code to state details), consistent with the server's stated purpose of providing 'master data lookups.' No modification, execution, deletion, or financial operation is implied. The empty description lowers confidence slightly, but the naming pattern and server context strongly indicate a read-only data lookup operation.
From the tool's definition Tool named 'decode_state_code' with empty description; based on naming convention and sibling tools on this server (which perform lookups and validations), this appears to be a master data lookup function that maps state codes to state information.
Documented attack patterns abuse exactly the kind of access decode_state_code 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_state_code:
{
"version": "1",
"default": "deny",
"tools": {
"decode_state_code": {}
}
}decode_state_code is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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decode_state_code. 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_state_code: 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_state_code 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_state_code 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_state_code. 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_state_code 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.