AI agents call market-data to retrieve information from Groww MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves market data (stock quotes, historical data) with no side effects. Despite the empty description reducing confidence slightly, the server context and tool name clearly indicate data fetching rather than execution, modification, or financial action. Classified as Read with low severity due to its informational nature and lack of capability to modify state or commit financial obligations.
From the tool's definition Tool name 'market-data' combined with server description stating 'fetch portfolio data, get live stock quotes and historical market data' indicates a read-only data retrieval function.
Documented attack patterns abuse exactly the kind of access market-data gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Groww MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for market-data:
{
"version": "1",
"default": "deny",
"tools": {
"market-data": {}
}
}market-data is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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market-data. It is categorised as a Read tool in the Groww MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Groww MCP Server MCP server in PolicyLayer and add a rule for market-data: 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 Groww MCP Server. Nothing to install.
market-data 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 market-data 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 market-data. 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.
market-data is provided by the Groww MCP Server MCP server (venkatakaushikvemani/groww-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Groww MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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6 Groww MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.