get_crypto_prices

SERVERX402 Middleware SOURCE@gadgethumans/x402

Low RISK CLASS

Category Read

Parameters 10 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/com-gadgethumans-swarm-x402-middleware/get-crypto-prices.md

WHAT IT DOES

What get_crypto_prices does on X402 Middleware

AI agents call get_crypto_prices to retrieve information from X402 Middleware without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Parameter	Type	Required	Description
`symbol`	string	—

Parameters from the server's own tool schema.

RISK

Why get_crypto_prices is rated Low

This tool retrieves market data from Binance without modifying, executing operations, or committing financial transactions. It is purely a data retrieval operation similar to a price lookup. While it is hosted on a payment middleware server (X402), the tool itself only performs read operations.

From the tool's definition Tool description states 'Get real-time cryptocurrency prices' and 'check current crypto prices, 24-hour price changes, and market data'. The parameters accept symbol names for querying.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs get_crypto_prices safely

PolicyLayer is an MCP gateway: it sits between your AI agents and X402 Middleware, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For get_crypto_prices, this is the rule to start with:

get_crypto_prices Allowed

get_crypto_prices 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": {
    "get_crypto_prices": {}
  }
}

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

The button opens the PolicyLayer dashboard: create your workspace, connect X402 Middleware, apply this rule, and every get_crypto_prices call is checked against it from then on.

FAQ

Questions about get_crypto_prices

What does the get_crypto_prices tool do? +

Get real-time cryptocurrency prices from Binance. Use this to check current crypto prices, 24-hour price changes, and market data for major cryptocurrencies. Supports common names (bitcoin, ethereum, solana) and direct ticker symbols. Parameters: symbol — Comma-separated cryptocurrency names or tickers (default: "bitcoin,ethereum"). Examples: "bitcoin", "ethereum,solana", "BTC,ETH,SOL". It is categorised as a Read tool in the X402 Middleware MCP Server, which means it retrieves data without modifying state.

What parameters does get_crypto_prices accept? +

get_crypto_prices accepts 1 parameter: symbol. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on get_crypto_prices? +

Register the X402 Middleware MCP server in PolicyLayer and add a rule for get_crypto_prices: 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 X402 Middleware. Nothing to install.

What risk level is get_crypto_prices? +

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

Can I rate-limit get_crypto_prices? +

Yes. Add a rate_limit block to the get_crypto_prices 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_prices completely? +

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

get_crypto_prices is provided by the X402 Middleware MCP server (@gadgethumans/x402). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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