validate_tan

Validate TAN (Tax Deduction Account Number) format.

SERVERMcp India Stack SOURCErehan1020/mcp-india-stack

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade C, identity unverified Pull the record →

This record as markdown: /tools/rehan1020-mcp-india-stack/validate-tan.md

WHAT IT DOES

What validate_tan does on Mcp India Stack

AI agents call validate_tan to retrieve information from Mcp India Stack without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why validate_tan is rated Low

This tool performs validation of a Tax Deduction Account Number format, which is a read-only operation that verifies whether input conforms to expected criteria. It has no side effects, does not modify data, execute commands, destroy data, or commit financial transactions.

From the tool's definition The tool name is "validate_tan" and the description states it "Validate[s] TAN (Tax Deduction Account Number) format." This is a format validation operation that queries or checks data against a schema without modifying, executing external operations,…

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs validate_tan safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Mcp India Stack, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For validate_tan, this is the rule to start with:

validate_tan Allowed

validate_tan is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "validate_tan": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Mcp India Stack, apply this rule, and every validate_tan call is checked against it from then on.

FAQ

Questions about validate_tan

What does the validate_tan tool do? +

Validate TAN (Tax Deduction Account Number) format. It is categorised as a Read tool in the Mcp India Stack MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on validate_tan? +

Register the Mcp India Stack MCP server in PolicyLayer and add a rule for validate_tan: 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.

What risk level is validate_tan? +

validate_tan is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit validate_tan? +

Yes. Add a rate_limit block to the validate_tan 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 validate_tan completely? +

Set action: deny in the PolicyLayer policy for validate_tan. 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 validate_tan? +

validate_tan 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.

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