yahoo_finance_screeners

Yahoo Finance predefined screeners. Lists the predefined screeners supported by the Yahoo Finance integration.

SERVERCrawlora SOURCEcrawlora-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade D, identity unverified Pull the record →

This record as markdown: /tools/crawlora-mcp/yahoo-finance-screeners.md

WHAT IT DOES

What yahoo_finance_screeners does on Crawlora

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

RISK

Why yahoo_finance_screeners is rated Low

This tool performs a read-only operation: it lists or enumerates predefined screeners without modifying data, executing code, or causing side effects. The verb 'Lists' and the passive scope (supported screeners) confirm it is informational retrieval. No financial transactions, deletions, or external executions are involved.

From the tool's definition Tool name 'yahoo_finance_screeners' and description 'Lists the predefined screeners supported by the Yahoo Finance integration' indicate a listing/query operation that retrieves metadata about available screeners.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs yahoo_finance_screeners safely

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

yahoo_finance_screeners Allowed

yahoo_finance_screeners 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": {
    "yahoo_finance_screeners": {}
  }
}

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

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

FAQ

Questions about yahoo_finance_screeners

What does the yahoo_finance_screeners tool do? +

Yahoo Finance predefined screeners. Lists the predefined screeners supported by the Yahoo Finance integration. It is categorised as a Read tool in the Crawlora MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on yahoo_finance_screeners? +

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

What risk level is yahoo_finance_screeners? +

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

Can I rate-limit yahoo_finance_screeners? +

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

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

yahoo_finance_screeners is provided by the Crawlora MCP server (crawlora-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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