regexcronsql-validatorDeveloper ToolsCode ExecutionTesting & QA ToolsencodiAlicense-Not gradedqualityCmaintenanceValidates regex, cron, and SQL expressions by executing them in real runtimes, with payments via x402 USDC on Base. Updated a month ago (2026-08-11 17:35 UTC)MIT
x402-sub-agent-mcpnothinginfinityFlicense-Not gradedqualityCmaintenanceMCP server for managing x402 payment policies (rules, coupons, tiers, usage logs) conversationally via LLM and evaluating request decisions. Updated 7 days ago (2026-09-05 23:02 UTC)-
@vapi-network/mcpofficialCryptocurrencyFinancevAPI-NetworkAlicense-Not gradedqualityCmaintenanceLets MCP clients discover x402 APIs, pay for calls from a local non-custodial wallet, and inspect balances and payment receipts. Updated 3 days ago (2026-09-10 19:51 UTC)Apache 2.0
validar-semverDeveloper ToolsPayments & BillingencodiAlicense-Not gradedqualityCmaintenanceMCP server that validates semantic version ranges using npm's semver engine, with payment via x402 on Base mainnet. Updated a month ago (2026-08-11 17:29 UTC)MIT
gold402-mcpSearchPayments & BillingAPI TestingHaustorium12FlicenseAqualityBmaintenanceEnables MCP-capable agents to search the curated gold-402 directory of x402 services, probe any endpoint for valid 402 payment terms, and optionally purchase a human editorial verdict for a resource. Updated 8 days ago (2026-09-05 19:02 UTC)5-
APIMesh MCP ServerMonitoringSearchSecuritymbeatoAlicense-Not gradedqualityFmaintenance23 pay-per-call web analysis APIs as MCP tools. Security audits, tech stack detection, email verification, SEO analysis, SSL checks, performance monitoring. Supports x402 and Stripe MPP payments. Updated 4 months ago (2026-05-11 21:11 UTC)42 npm6MIT