tiger_search_symbols

THE RISK

Low Risk

Why tiger_search_symbols needs a policy

Symbol search is a read-only query that retrieves information about available instruments. No side effects, no data modification, no execution of trades or code. While the server handles financial operations, this specific tool appears to be informational lookup only.

From the tool's definition Tool name 'tiger_search_symbols' indicates a search operation that queries available trading symbols. Description is empty, but context from sibling tools (market data, kline, earnings queries) and server purpose (market analysis) suggests this retrieves…

Documented attack patterns abuse exactly the kind of access tiger_search_symbols gives an agent:

POLICY

How to control tiger_search_symbols

PolicyLayer is an MCP gateway — it sits between your AI agents and Tiger MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for tiger_search_symbols:

policy.json

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

tiger_search_symbols is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Tiger MCP — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

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All 23 Tiger MCP tools →

Read tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about tiger_search_symbols

What does the tiger_search_symbols tool do? +

tiger_search_symbols. It is categorised as a Read tool in the Tiger MCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on tiger_search_symbols? +

Register the Tiger MCP server in PolicyLayer and add a rule for tiger_search_symbols: 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 Tiger MCP. Nothing to install.

What risk level is tiger_search_symbols? +

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

Can I rate-limit tiger_search_symbols? +

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

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

tiger_search_symbols is provided by the Tiger MCP server (luxiaolei/tiger-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Tiger MCP tool call.

Start from Tiger MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →