Individual skill
cmc-x402
Access CoinMarketCap data via x402 pay-per-request protocol with USDC payments on Base. Use when users mention x402, want CMC data without API keys, ask about pay-per-request APIs, or need to integrate CMC with on-chain payments. Also use for any Coinbase x402 protocol questions. Trigger: "x402", "pay per request", "no API key", "USDC payment", "CMC without subscription", "/cmc-x402"
skills/cmc-x402/SKILL.md
Source commit 734e728ad1b3b9fe775c911f581dc750e7875983
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- Not checked yet
- Last checked
- Nov 11, 2026
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- Repository stars (not skill ratings)
- 76
- Repository last updated
- Oct 29, 2026
- License
- MIT
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- agent-skills Repository topic
- bitcoin Repository topic
- claude-code Repository topic
- coinmarketcap Repository topic
- coinmarketcap-api Repository topic
- crypto-api Repository topic
- cryptocurrency Repository topic
- market-data Repository topic
- engineering Derived category
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SKILL.mdcore · 4,630 bytesSKILL.mdcore · 4,630 bytesSKILL.mdcore · 4,630 bytesreferences/endpoints.mddoc · 4,812 bytesreferences/payment-details.mddoc · 2,841 bytes
Read excerpt
# CoinMarketCap x402
Pay-per-request crypto market data powered by the x402 protocol. Access CoinMarketCap endpoints instantly with on-chain USDC payment. No API key or subscription required.
## What is x402?
x402 is an open payment protocol developed by Coinbase that enables automatic stablecoin payments over HTTP. Instead of managing API keys, you pay $0.01 USDC per request on Base. The x402 client library handles payment signing automatically.
Learn more: https://docs.x402.org
## Prerequisites
Before using x402 endpoints, ensure you have:
