Get real-time cryptocurrency price data including 24h change, volume, market cap, and 52-week range. Costs $0.01 USDC per request via x402 on Base. Supports 53 symbols: BTC, ETH, SOL, USDC, DOGE, AVAX, LINK, ADA, DOT, MATIC, UNI, AAVE, ATOM, NEAR, XRP, LTC, SHIB, ARB, OP, PEPE, BONK, SUI, SEI, TI...
AI agents call crypto_get_price to retrieve information from Data Apis without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a straightforward data retrieval operation with no side effects. It queries and returns cryptocurrency pricing information without creating, modifying, deleting, or executing any operations. The micropayment requirement does not change the classification—it is a read-only API call.
From the tool's definition Tool retrieves real-time cryptocurrency price data including 24h change, volume, market cap, and 52-week range. The description explicitly states it 'Get[s]' data with no modification, deletion, or execution capabilities.
Attacks that exploit this kind of access
Get real-time cryptocurrency price data including 24h change, volume, market cap, and 52-week range. Costs $0.01 USDC per request via x402 on Base. Supports 53 symbols: BTC, ETH, SOL, USDC, DOGE, AVAX, LINK, ADA, DOT, MATIC, UNI, AAVE, ATOM, NEAR, XRP, LTC, SHIB, ARB, OP, PEPE, BONK, SUI, SEI, TIA, JUP, WLD, TON, and more. It is categorised as a Read tool in the Data Apis MCP Server, which means it retrieves data without modifying state.
Register the Data Apis MCP server in PolicyLayer and add a rule for crypto_get_price: 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 Data Apis. Nothing to install.
crypto_get_price is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the crypto_get_price 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.
Set action: deny in the PolicyLayer policy for crypto_get_price. 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.
crypto_get_price is provided by the Data Apis MCP server (yantrix-ai/x402-apis-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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