news_get_sources | PolicyLayer

WHAT IT DOES

What news_get_sources does on Sperax Ecosystem Crypto & DeFI MCP Server

AI agents call news_get_sources to retrieve information from Sperax Ecosystem Crypto & DeFI MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

THE RISK

Low Risk

Why news_get_sources needs a policy

This tool performs a read-only query to retrieve information about news sources. It retrieves or lists data (names, categories, status) with no reversible or irreversible modifications, no code execution, no financial transactions, and no destructive operations.

From the tool's definition Tool name 'news_get_sources' and description 'Get information about all available news sources' indicate retrieval of metadata without any side effects, creation, modification, or deletion of data.

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

POLICY

How to control news_get_sources

PolicyLayer is an MCP gateway — it sits between your AI agents and Sperax Ecosystem Crypto & DeFI MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for news_get_sources:

policy.json

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

news_get_sources 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 Sperax Ecosystem Crypto & DeFI MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
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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 news_get_sources

What does the news_get_sources tool do? +

Get information about all available news sources including their names, categories, and current status. It is categorised as a Read tool in the Sperax Ecosystem Crypto & DeFI MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on news_get_sources? +

Register the Sperax Ecosystem Crypto & DeFI MCP Server MCP server in PolicyLayer and add a rule for news_get_sources: 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 Sperax Ecosystem Crypto & DeFI MCP Server. Nothing to install.

What risk level is news_get_sources? +

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

Can I rate-limit news_get_sources? +

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

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

news_get_sources is provided by the Sperax Ecosystem Crypto & DeFI MCP Server MCP server (sperax/sperax-crypto-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Sperax Ecosystem Crypto & DeFI MCP Server tool call.

Start from Sperax Ecosystem Crypto & DeFI 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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1318 Sperax Ecosystem Crypto & DeFI MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.