get_crypto_news

THE RISK

Low Risk

Why get_crypto_news needs a policy

This is a straightforward data retrieval tool that queries news aggregation sources. It performs no write operations, does not execute code or commands, does not delete data, and does not involve financial transactions. The only action is reading and returning news content, making it a Read category tool with low severity since misuse would only result in information gathering with no consequential impact.

From the tool's definition Tool name 'get_crypto_news' and description 'Get latest cryptocurrency news from 7 major sources' indicates retrieval of publicly available news data with no side effects, modifications, or external operations triggered.

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

POLICY

How to control get_crypto_news

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 get_crypto_news:

policy.json

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

get_crypto_news 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.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

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

Questions about get_crypto_news

What does the get_crypto_news tool do? +

Get latest cryptocurrency news from 7 major sources (CoinDesk, The Block, Decrypt, CoinTelegraph, Bitcoin Magazine, Blockworks, The Defiant). 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 get_crypto_news? +

Register the Sperax Ecosystem Crypto & DeFI MCP Server MCP server in PolicyLayer and add a rule for get_crypto_news: 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 get_crypto_news? +

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

Can I rate-limit get_crypto_news? +

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

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

get_crypto_news 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.

CHECK YOUR STACK →