search_companies

A read tool on the OpenNews MCP server.

SERVEROpenNews MCP SOURCE6551team/opennews-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade A, identity unverified Pull the record →

This record as markdown: /tools/6551team-opennews-mcp/search-companies.md

WHAT IT DOES

What search_companies does on OpenNews MCP

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

RISK

Why search_companies is rated Low

This tool appears to search or filter company data within a news aggregation and cryptocurrency market platform. Despite the empty description, the naming convention ('search_') and the pattern of sibling tools (all retrieval-focused: get_*, search_*) strongly suggest this is a Read operation that queries or lists data without modification, deletion, or execution of external commands.

From the tool's definition Tool name is 'search_companies' and description is empty. Based on sibling tools (get_company_info, get_company_report_text, get_crypto_holdings, get_latest_news, etc.), this server provides data retrieval and aggregation functions.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs search_companies safely

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

search_companies Allowed

search_companies 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": {
    "search_companies": {}
  }
}

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

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

FAQ

Questions about search_companies

What does the search_companies tool do? +

search_companies is a read tool on the OpenNews MCP server. It is categorised as a Read tool in the OpenNews MCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on search_companies? +

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

What risk level is search_companies? +

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

Can I rate-limit search_companies? +

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

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

search_companies is provided by the OpenNews MCP server (6551team/opennews-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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