AI Storefront Readiness Grader — $1.00/call via x402

Agent-callable tool that grades any ecommerce storefront URL across 20 weighted checks and returns an A–F readiness grade with actionable findings. Powered by the Storefront Grader MCP server (https://grader-al6bxcngia-ue.a.run.app/mcp), tool: grade_storefront. Pricing: $1.00 USDC per call via x402 on Base mainnet (eip155:8453) to 0xd702C8A8Ee30F6950A2a663010d12FC195D5348e — payment enforced in-protocol; an unpaid call returns a payment-required result carrying the x402 challenge, which x402-capable agents settle automatically. No platform cut: payment goes directly to the service per call. Server discovery (initialize / tools list) is open — inspect free, pay only per grading call.