A
licenseA
qualityB
maintenanceMCP server that gates API calls to AI agents using proof-of-work (free) or Lightning payment (3 sats), providing challenge, verify, and status tools for per-call authentication without accounts.
3
44
1
MIT
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token4u-mcpofficial
AlicenseAqualityBmaintenanceEnables AI agents to call LLM APIs via x402 micropayments in USDC on Base network, manage a local wallet, and query consumption records.311MIT- AlicenseAqualityAmaintenanceProvides AI agents with SSRF-protected URL intelligence and 32 paid REST/MCP tools, plus a free catalog search, with payments in USDC on Base Mainnet.235Apache 2.0
EntRoute MCPofficial
AlicenseAqualityFmaintenanceMCP Server for AI agents to discover and call pay-per-request APIs via EntRoute. Give Claude, Cursor, Windsurf, or any MCP-compatible agent access to 350+ verified x402 API endpoints across 110+ capabilities — DeFi prices, web search, prediction markets, news, and more.3171MIT- AlicenseAqualityBmaintenanceEnables MCP clients to access all endpoints of an x402 gateway by paying real-time microtransactions (USDC on Base) per API call, with automatic tool discovery and spend guardrails.2389MIT
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halowerk-mcpofficial
AlicenseAqualityCmaintenanceProvides access to 70 paid APIs as MCP tools with per-call and session budgets, paying via x402/USDC on Base without requiring an account or login. Includes a built-in allowlist of hosts and safe defaults to prevent unintended payments.14MIT- AlicenseAqualityCmaintenanceMCP server that gives Claude/GPT agents commerce tools — each tool call pays an upstream x402 endpoint and returns its artifact.153Apache 2.0
- AlicenseAqualityBmaintenanceProvides AI agents with a wallet and access to 900+ pay-per-call intelligence APIs across 74 verticals, with automatic USDC payments on Base and built-in spend guardrails.582MIT
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@arispay/payagent-mcpofficial
AlicenseDqualityFmaintenanceEnables AI agents to call paid APIs and settle HTTP 402 payment challenges with USDC on Base, without private keys ever being involved.2102MIT